970 memory allocation issue revisited

Can you run the 660Ti (if you still have it) through this test?

 

Edit: Here is the link of the test I ran, I got a driver error at the end of the test.
mediafire.com/convkey/7bb8/gaqb5jcdd933eqczg.jpg

 

First the New England Patriots are deflating footballs, now this?

We need a hero.

 

the same for me on my 780 Ti 3 Gb ,I confirm the benchmark cakes it above 2.5 Gb !
But no problem in games when they use more than 2.5Gb

and no problem in gpu-z , monitor shows 2974 Mb used when I run the test.
possessor of 970 , when u run the benchmark , what value is shown beside memory used in gpu-z ?

 

You should've downloaded my version, it comes with cudart64_65.dll in the package

I don't know. Once the program stops at "Press enter to continue" the memory is not used by the gpu anymore, but it isn't freed either.
If you start playing a game while the memory is not freed yet, it will page the unused memory and evict it from onboard vRAM such that there is enough room for the more important game that actually uses the memory.
I don't know what happens if say 3GB is still allocated and the remaining 1GB is free and a game needs 512MB or something. That would require further tests. With the program you could test this as well.

Your paint art never ceises to amaze, Richard

Here are the results with DWM disabled:

 

Yes I know I've been meaning to do something about that. I never was much of an artist.

Thanks
Can you spot the difference between the two? Small but noticeable, prob not enough to draw any conclusions though.

DWM may play a role in W7, but it can't be disabled in W8.
So if all tests run in W8 result in no difference between GPU's, and all tests where there is a difference were run in W7, it will help support my OS/app theory voiced in the other thread..

If none of the above is true my theory will go up in smoke..... Just a thought.

Spoiler

Btw forget what I said to you the other day, I think you're right.

 

@VultureX run the 32MB on the GTX970?

In the last chunk my L2 Bandwidth rose, and in the third last Memory chunk my bandwidth rose to normal.

Also TJ ran the bench with a GTX780 in headless mode 128 a few pages back and got consistent bandwidth results for windows 8.1.

 

... GTX 980 basic test, dwm off. (I hope that's enough)

 

I wonder if this could be a reason for the graphical glitches that I am having in many games. Probably not though but I'll test my 970 too

 

pretty much made no difference whether headless, dwm on/off and even the paging file on/off. what mattered in the amount allocated was the size of the chunks in W7:

Code:

Nai's Benchmark, edited by VultureX
  Device: GeForce GTX 780 Ti (3.00 GB)
  Memory Bus Width (bits): 384
  Peak Theoretical DRAM Bandwidth (GB/s): 336.000000

Allocating Memory . . .
Chunk Size: 16 MiByte
Allocated 182 Chunks
Allocated 2912 MiByte
Benchmarking DRAM
DRAM-Bandwidth of Chunk no. 0 (0 MiByte to 16 MiByte):264.38 GByte/s
DRAM-Bandwidth of Chunk no. 1 (16 MiByte to 32 MiByte):299.60 GByte/s
DRAM-Bandwidth of Chunk no. 2 (32 MiByte to 48 MiByte):300.14 GByte/s
DRAM-Bandwidth of Chunk no. 3 (48 MiByte to 64 MiByte):299.72 GByte/s
DRAM-Bandwidth of Chunk no. 4 (64 MiByte to 80 MiByte):299.60 GByte/s
DRAM-Bandwidth of Chunk no. 5 (80 MiByte to 96 MiByte):299.76 GByte/s
DRAM-Bandwidth of Chunk no. 6 (96 MiByte to 112 MiByte):299.67 GByte/s
DRAM-Bandwidth of Chunk no. 7 (112 MiByte to 128 MiByte):299.68 GByte/s
DRAM-Bandwidth of Chunk no. 8 (128 MiByte to 144 MiByte):299.44 GByte/s
DRAM-Bandwidth of Chunk no. 9 (144 MiByte to 160 MiByte):299.26 GByte/s
DRAM-Bandwidth of Chunk no. 10 (160 MiByte to 176 MiByte):298.91 GByte/s
DRAM-Bandwidth of Chunk no. 11 (176 MiByte to 192 MiByte):298.84 GByte/s
DRAM-Bandwidth of Chunk no. 12 (192 MiByte to 208 MiByte):299.19 GByte/s
DRAM-Bandwidth of Chunk no. 13 (208 MiByte to 224 MiByte):298.77 GByte/s
DRAM-Bandwidth of Chunk no. 14 (224 MiByte to 240 MiByte):299.19 GByte/s
DRAM-Bandwidth of Chunk no. 15 (240 MiByte to 256 MiByte):299.05 GByte/s
DRAM-Bandwidth of Chunk no. 16 (256 MiByte to 272 MiByte):299.05 GByte/s
DRAM-Bandwidth of Chunk no. 17 (272 MiByte to 288 MiByte):298.80 GByte/s
DRAM-Bandwidth of Chunk no. 18 (288 MiByte to 304 MiByte):298.56 GByte/s
DRAM-Bandwidth of Chunk no. 19 (304 MiByte to 320 MiByte):298.94 GByte/s
DRAM-Bandwidth of Chunk no. 20 (320 MiByte to 336 MiByte):299.02 GByte/s
DRAM-Bandwidth of Chunk no. 21 (336 MiByte to 352 MiByte):299.22 GByte/s
DRAM-Bandwidth of Chunk no. 22 (352 MiByte to 368 MiByte):299.06 GByte/s
DRAM-Bandwidth of Chunk no. 23 (368 MiByte to 384 MiByte):299.09 GByte/s
DRAM-Bandwidth of Chunk no. 24 (384 MiByte to 400 MiByte):299.10 GByte/s
DRAM-Bandwidth of Chunk no. 25 (400 MiByte to 416 MiByte):298.74 GByte/s
DRAM-Bandwidth of Chunk no. 26 (416 MiByte to 432 MiByte):298.74 GByte/s
DRAM-Bandwidth of Chunk no. 27 (432 MiByte to 448 MiByte):298.61 GByte/s
DRAM-Bandwidth of Chunk no. 28 (448 MiByte to 464 MiByte):299.19 GByte/s
DRAM-Bandwidth of Chunk no. 29 (464 MiByte to 480 MiByte):299.09 GByte/s
DRAM-Bandwidth of Chunk no. 30 (480 MiByte to 496 MiByte):298.86 GByte/s
DRAM-Bandwidth of Chunk no. 31 (496 MiByte to 512 MiByte):299.09 GByte/s
DRAM-Bandwidth of Chunk no. 32 (512 MiByte to 528 MiByte):298.92 GByte/s
DRAM-Bandwidth of Chunk no. 33 (528 MiByte to 544 MiByte):299.59 GByte/s
DRAM-Bandwidth of Chunk no. 34 (544 MiByte to 560 MiByte):299.52 GByte/s
DRAM-Bandwidth of Chunk no. 35 (560 MiByte to 576 MiByte):299.66 GByte/s
DRAM-Bandwidth of Chunk no. 36 (576 MiByte to 592 MiByte):299.40 GByte/s
DRAM-Bandwidth of Chunk no. 37 (592 MiByte to 608 MiByte):299.74 GByte/s
DRAM-Bandwidth of Chunk no. 38 (608 MiByte to 624 MiByte):299.80 GByte/s
DRAM-Bandwidth of Chunk no. 39 (624 MiByte to 640 MiByte):299.73 GByte/s
DRAM-Bandwidth of Chunk no. 40 (640 MiByte to 656 MiByte):299.66 GByte/s
DRAM-Bandwidth of Chunk no. 41 (656 MiByte to 672 MiByte):299.68 GByte/s
DRAM-Bandwidth of Chunk no. 42 (672 MiByte to 688 MiByte):299.63 GByte/s
DRAM-Bandwidth of Chunk no. 43 (688 MiByte to 704 MiByte):299.47 GByte/s
DRAM-Bandwidth of Chunk no. 44 (704 MiByte to 720 MiByte):299.79 GByte/s
DRAM-Bandwidth of Chunk no. 45 (720 MiByte to 736 MiByte):299.70 GByte/s
DRAM-Bandwidth of Chunk no. 46 (736 MiByte to 752 MiByte):300.08 GByte/s
DRAM-Bandwidth of Chunk no. 47 (752 MiByte to 768 MiByte):299.80 GByte/s
DRAM-Bandwidth of Chunk no. 48 (768 MiByte to 784 MiByte):299.41 GByte/s
DRAM-Bandwidth of Chunk no. 49 (784 MiByte to 800 MiByte):299.95 GByte/s
DRAM-Bandwidth of Chunk no. 50 (800 MiByte to 816 MiByte):299.79 GByte/s
DRAM-Bandwidth of Chunk no. 51 (816 MiByte to 832 MiByte):299.71 GByte/s
DRAM-Bandwidth of Chunk no. 52 (832 MiByte to 848 MiByte):299.66 GByte/s
DRAM-Bandwidth of Chunk no. 53 (848 MiByte to 864 MiByte):299.59 GByte/s
DRAM-Bandwidth of Chunk no. 54 (864 MiByte to 880 MiByte):299.76 GByte/s
DRAM-Bandwidth of Chunk no. 55 (880 MiByte to 896 MiByte):299.66 GByte/s
DRAM-Bandwidth of Chunk no. 56 (896 MiByte to 912 MiByte):299.89 GByte/s
DRAM-Bandwidth of Chunk no. 57 (912 MiByte to 928 MiByte):298.68 GByte/s
DRAM-Bandwidth of Chunk no. 58 (928 MiByte to 944 MiByte):298.98 GByte/s
DRAM-Bandwidth of Chunk no. 59 (944 MiByte to 960 MiByte):299.11 GByte/s
DRAM-Bandwidth of Chunk no. 60 (960 MiByte to 976 MiByte):299.00 GByte/s
DRAM-Bandwidth of Chunk no. 61 (976 MiByte to 992 MiByte):299.21 GByte/s
DRAM-Bandwidth of Chunk no. 62 (992 MiByte to 1008 MiByte):299.18 GByte/s
DRAM-Bandwidth of Chunk no. 63 (1008 MiByte to 1024 MiByte):299.25 GByte/s
DRAM-Bandwidth of Chunk no. 64 (1024 MiByte to 1040 MiByte):299.13 GByte/s
DRAM-Bandwidth of Chunk no. 65 (1040 MiByte to 1056 MiByte):299.30 GByte/s
DRAM-Bandwidth of Chunk no. 66 (1056 MiByte to 1072 MiByte):299.17 GByte/s
DRAM-Bandwidth of Chunk no. 67 (1072 MiByte to 1088 MiByte):299.07 GByte/s
DRAM-Bandwidth of Chunk no. 68 (1088 MiByte to 1104 MiByte):298.89 GByte/s
DRAM-Bandwidth of Chunk no. 69 (1104 MiByte to 1120 MiByte):299.17 GByte/s
DRAM-Bandwidth of Chunk no. 70 (1120 MiByte to 1136 MiByte):298.99 GByte/s
DRAM-Bandwidth of Chunk no. 71 (1136 MiByte to 1152 MiByte):299.43 GByte/s
DRAM-Bandwidth of Chunk no. 72 (1152 MiByte to 1168 MiByte):299.83 GByte/s
DRAM-Bandwidth of Chunk no. 73 (1168 MiByte to 1184 MiByte):299.59 GByte/s
DRAM-Bandwidth of Chunk no. 74 (1184 MiByte to 1200 MiByte):299.72 GByte/s
DRAM-Bandwidth of Chunk no. 75 (1200 MiByte to 1216 MiByte):299.77 GByte/s
DRAM-Bandwidth of Chunk no. 76 (1216 MiByte to 1232 MiByte):300.00 GByte/s
DRAM-Bandwidth of Chunk no. 77 (1232 MiByte to 1248 MiByte):299.87 GByte/s
DRAM-Bandwidth of Chunk no. 78 (1248 MiByte to 1264 MiByte):299.75 GByte/s
DRAM-Bandwidth of Chunk no. 79 (1264 MiByte to 1280 MiByte):299.48 GByte/s
DRAM-Bandwidth of Chunk no. 80 (1280 MiByte to 1296 MiByte):299.70 GByte/s
DRAM-Bandwidth of Chunk no. 81 (1296 MiByte to 1312 MiByte):299.87 GByte/s
DRAM-Bandwidth of Chunk no. 82 (1312 MiByte to 1328 MiByte):299.70 GByte/s
DRAM-Bandwidth of Chunk no. 83 (1328 MiByte to 1344 MiByte):299.78 GByte/s
DRAM-Bandwidth of Chunk no. 84 (1344 MiByte to 1360 MiByte):299.55 GByte/s
DRAM-Bandwidth of Chunk no. 85 (1360 MiByte to 1376 MiByte):299.73 GByte/s
DRAM-Bandwidth of Chunk no. 86 (1376 MiByte to 1392 MiByte):298.96 GByte/s
DRAM-Bandwidth of Chunk no. 87 (1392 MiByte to 1408 MiByte):298.91 GByte/s
DRAM-Bandwidth of Chunk no. 88 (1408 MiByte to 1424 MiByte):298.67 GByte/s
DRAM-Bandwidth of Chunk no. 89 (1424 MiByte to 1440 MiByte):298.89 GByte/s
DRAM-Bandwidth of Chunk no. 90 (1440 MiByte to 1456 MiByte):298.98 GByte/s
DRAM-Bandwidth of Chunk no. 91 (1456 MiByte to 1472 MiByte):299.11 GByte/s
DRAM-Bandwidth of Chunk no. 92 (1472 MiByte to 1488 MiByte):299.15 GByte/s
DRAM-Bandwidth of Chunk no. 93 (1488 MiByte to 1504 MiByte):298.93 GByte/s
DRAM-Bandwidth of Chunk no. 94 (1504 MiByte to 1520 MiByte):298.97 GByte/s
DRAM-Bandwidth of Chunk no. 95 (1520 MiByte to 1536 MiByte):299.35 GByte/s
DRAM-Bandwidth of Chunk no. 96 (1536 MiByte to 1552 MiByte):299.21 GByte/s
DRAM-Bandwidth of Chunk no. 97 (1552 MiByte to 1568 MiByte):299.19 GByte/s
DRAM-Bandwidth of Chunk no. 98 (1568 MiByte to 1584 MiByte):298.97 GByte/s
DRAM-Bandwidth of Chunk no. 99 (1584 MiByte to 1600 MiByte):299.39 GByte/s
DRAM-Bandwidth of Chunk no. 100 (1600 MiByte to 1616 MiByte):299.45 GByte/s
DRAM-Bandwidth of Chunk no. 101 (1616 MiByte to 1632 MiByte):299.97 GByte/s
DRAM-Bandwidth of Chunk no. 102 (1632 MiByte to 1648 MiByte):299.62 GByte/s
DRAM-Bandwidth of Chunk no. 103 (1648 MiByte to 1664 MiByte):299.84 GByte/s
DRAM-Bandwidth of Chunk no. 104 (1664 MiByte to 1680 MiByte):299.69 GByte/s
DRAM-Bandwidth of Chunk no. 105 (1680 MiByte to 1696 MiByte):299.68 GByte/s
DRAM-Bandwidth of Chunk no. 106 (1696 MiByte to 1712 MiByte):299.68 GByte/s
DRAM-Bandwidth of Chunk no. 107 (1712 MiByte to 1728 MiByte):299.66 GByte/s
DRAM-Bandwidth of Chunk no. 108 (1728 MiByte to 1744 MiByte):299.82 GByte/s
DRAM-Bandwidth of Chunk no. 109 (1744 MiByte to 1760 MiByte):299.91 GByte/s
DRAM-Bandwidth of Chunk no. 110 (1760 MiByte to 1776 MiByte):299.52 GByte/s
DRAM-Bandwidth of Chunk no. 111 (1776 MiByte to 1792 MiByte):299.83 GByte/s
DRAM-Bandwidth of Chunk no. 112 (1792 MiByte to 1808 MiByte):299.59 GByte/s
DRAM-Bandwidth of Chunk no. 113 (1808 MiByte to 1824 MiByte):298.75 GByte/s
DRAM-Bandwidth of Chunk no. 114 (1824 MiByte to 1840 MiByte):299.23 GByte/s
DRAM-Bandwidth of Chunk no. 115 (1840 MiByte to 1856 MiByte):299.01 GByte/s
DRAM-Bandwidth of Chunk no. 116 (1856 MiByte to 1872 MiByte):299.19 GByte/s
DRAM-Bandwidth of Chunk no. 117 (1872 MiByte to 1888 MiByte):299.06 GByte/s
DRAM-Bandwidth of Chunk no. 118 (1888 MiByte to 1904 MiByte):298.96 GByte/s
DRAM-Bandwidth of Chunk no. 119 (1904 MiByte to 1920 MiByte):298.80 GByte/s
DRAM-Bandwidth of Chunk no. 120 (1920 MiByte to 1936 MiByte):298.88 GByte/s
DRAM-Bandwidth of Chunk no. 121 (1936 MiByte to 1952 MiByte):298.89 GByte/s
DRAM-Bandwidth of Chunk no. 122 (1952 MiByte to 1968 MiByte):299.05 GByte/s
DRAM-Bandwidth of Chunk no. 123 (1968 MiByte to 1984 MiByte):298.71 GByte/s
DRAM-Bandwidth of Chunk no. 124 (1984 MiByte to 2000 MiByte):298.86 GByte/s
DRAM-Bandwidth of Chunk no. 125 (2000 MiByte to 2016 MiByte):299.09 GByte/s
DRAM-Bandwidth of Chunk no. 126 (2016 MiByte to 2032 MiByte):298.94 GByte/s
DRAM-Bandwidth of Chunk no. 127 (2032 MiByte to 2048 MiByte):299.80 GByte/s
DRAM-Bandwidth of Chunk no. 128 (2048 MiByte to 2064 MiByte):299.68 GByte/s
DRAM-Bandwidth of Chunk no. 129 (2064 MiByte to 2080 MiByte):299.86 GByte/s
DRAM-Bandwidth of Chunk no. 130 (2080 MiByte to 2096 MiByte):299.70 GByte/s
DRAM-Bandwidth of Chunk no. 131 (2096 MiByte to 2112 MiByte):300.04 GByte/s
DRAM-Bandwidth of Chunk no. 132 (2112 MiByte to 2128 MiByte):299.49 GByte/s
DRAM-Bandwidth of Chunk no. 133 (2128 MiByte to 2144 MiByte):299.46 GByte/s
DRAM-Bandwidth of Chunk no. 134 (2144 MiByte to 2160 MiByte):299.56 GByte/s
DRAM-Bandwidth of Chunk no. 135 (2160 MiByte to 2176 MiByte):299.44 GByte/s
DRAM-Bandwidth of Chunk no. 136 (2176 MiByte to 2192 MiByte):299.74 GByte/s
DRAM-Bandwidth of Chunk no. 137 (2192 MiByte to 2208 MiByte):299.67 GByte/s
DRAM-Bandwidth of Chunk no. 138 (2208 MiByte to 2224 MiByte):299.78 GByte/s
DRAM-Bandwidth of Chunk no. 139 (2224 MiByte to 2240 MiByte):300.04 GByte/s
DRAM-Bandwidth of Chunk no. 140 (2240 MiByte to 2256 MiByte):299.43 GByte/s
DRAM-Bandwidth of Chunk no. 141 (2256 MiByte to 2272 MiByte):299.17 GByte/s
DRAM-Bandwidth of Chunk no. 142 (2272 MiByte to 2288 MiByte):299.13 GByte/s
DRAM-Bandwidth of Chunk no. 143 (2288 MiByte to 2304 MiByte):299.08 GByte/s
DRAM-Bandwidth of Chunk no. 144 (2304 MiByte to 2320 MiByte):298.93 GByte/s
DRAM-Bandwidth of Chunk no. 145 (2320 MiByte to 2336 MiByte):298.79 GByte/s
DRAM-Bandwidth of Chunk no. 146 (2336 MiByte to 2352 MiByte):298.68 GByte/s
DRAM-Bandwidth of Chunk no. 147 (2352 MiByte to 2368 MiByte):299.27 GByte/s
DRAM-Bandwidth of Chunk no. 148 (2368 MiByte to 2384 MiByte):298.68 GByte/s
DRAM-Bandwidth of Chunk no. 149 (2384 MiByte to 2400 MiByte):298.93 GByte/s
DRAM-Bandwidth of Chunk no. 150 (2400 MiByte to 2416 MiByte):299.03 GByte/s
DRAM-Bandwidth of Chunk no. 151 (2416 MiByte to 2432 MiByte):299.15 GByte/s
DRAM-Bandwidth of Chunk no. 152 (2432 MiByte to 2448 MiByte):299.15 GByte/s
DRAM-Bandwidth of Chunk no. 153 (2448 MiByte to 2464 MiByte):298.94 GByte/s
DRAM-Bandwidth of Chunk no. 154 (2464 MiByte to 2480 MiByte):299.61 GByte/s
DRAM-Bandwidth of Chunk no. 155 (2480 MiByte to 2496 MiByte):299.73 GByte/s
DRAM-Bandwidth of Chunk no. 156 (2496 MiByte to 2512 MiByte):299.54 GByte/s
DRAM-Bandwidth of Chunk no. 157 (2512 MiByte to 2528 MiByte):299.38 GByte/s
DRAM-Bandwidth of Chunk no. 158 (2528 MiByte to 2544 MiByte):300.02 GByte/s
DRAM-Bandwidth of Chunk no. 159 (2544 MiByte to 2560 MiByte):299.78 GByte/s
DRAM-Bandwidth of Chunk no. 160 (2560 MiByte to 2576 MiByte):299.79 GByte/s
DRAM-Bandwidth of Chunk no. 161 (2576 MiByte to 2592 MiByte):299.68 GByte/s
DRAM-Bandwidth of Chunk no. 162 (2592 MiByte to 2608 MiByte):299.76 GByte/s
DRAM-Bandwidth of Chunk no. 163 (2608 MiByte to 2624 MiByte):299.85 GByte/s
DRAM-Bandwidth of Chunk no. 164 (2624 MiByte to 2640 MiByte):299.82 GByte/s
DRAM-Bandwidth of Chunk no. 165 (2640 MiByte to 2656 MiByte):299.87 GByte/s
DRAM-Bandwidth of Chunk no. 166 (2656 MiByte to 2672 MiByte):299.69 GByte/s
DRAM-Bandwidth of Chunk no. 167 (2672 MiByte to 2688 MiByte):299.91 GByte/s
DRAM-Bandwidth of Chunk no. 168 (2688 MiByte to 2704 MiByte):299.25 GByte/s
DRAM-Bandwidth of Chunk no. 169 (2704 MiByte to 2720 MiByte):299.06 GByte/s
DRAM-Bandwidth of Chunk no. 170 (2720 MiByte to 2736 MiByte):298.82 GByte/s
DRAM-Bandwidth of Chunk no. 171 (2736 MiByte to 2752 MiByte):299.18 GByte/s
DRAM-Bandwidth of Chunk no. 172 (2752 MiByte to 2768 MiByte):298.88 GByte/s
DRAM-Bandwidth of Chunk no. 173 (2768 MiByte to 2784 MiByte):299.00 GByte/s
DRAM-Bandwidth of Chunk no. 174 (2784 MiByte to 2800 MiByte):299.04 GByte/s
DRAM-Bandwidth of Chunk no. 175 (2800 MiByte to 2816 MiByte):299.00 GByte/s
DRAM-Bandwidth of Chunk no. 176 (2816 MiByte to 2832 MiByte):298.73 GByte/s
DRAM-Bandwidth of Chunk no. 177 (2832 MiByte to 2848 MiByte):299.17 GByte/s
DRAM-Bandwidth of Chunk no. 178 (2848 MiByte to 2864 MiByte):298.99 GByte/s
DRAM-Bandwidth of Chunk no. 179 (2864 MiByte to 2880 MiByte):299.03 GByte/s
DRAM-Bandwidth of Chunk no. 180 (2880 MiByte to 2896 MiByte):299.18 GByte/s
DRAM-Bandwidth of Chunk no. 181 (2896 MiByte to 2912 MiByte):299.60 GByte/s
Benchmarking L2-Cache
L2-Cache-Bandwidth of Chunk no. 0 (0 MiByte to 16 MiByte):560.72 GByte/s
L2-Cache-Bandwidth of Chunk no. 1 (16 MiByte to 32 MiByte):561.13 GByte/s
L2-Cache-Bandwidth of Chunk no. 2 (32 MiByte to 48 MiByte):561.22 GByte/s
L2-Cache-Bandwidth of Chunk no. 3 (48 MiByte to 64 MiByte):561.63 GByte/s
L2-Cache-Bandwidth of Chunk no. 4 (64 MiByte to 80 MiByte):562.09 GByte/s
L2-Cache-Bandwidth of Chunk no. 5 (80 MiByte to 96 MiByte):562.34 GByte/s
L2-Cache-Bandwidth of Chunk no. 6 (96 MiByte to 112 MiByte):561.32 GByte/s
L2-Cache-Bandwidth of Chunk no. 7 (112 MiByte to 128 MiByte):560.72 GByte/s
L2-Cache-Bandwidth of Chunk no. 8 (128 MiByte to 144 MiByte):561.91 GByte/s
L2-Cache-Bandwidth of Chunk no. 9 (144 MiByte to 160 MiByte):562.08 GByte/s
L2-Cache-Bandwidth of Chunk no. 10 (160 MiByte to 176 MiByte):561.42 GByte/s
L2-Cache-Bandwidth of Chunk no. 11 (176 MiByte to 192 MiByte):561.59 GByte/s
L2-Cache-Bandwidth of Chunk no. 12 (192 MiByte to 208 MiByte):562.72 GByte/s
L2-Cache-Bandwidth of Chunk no. 13 (208 MiByte to 224 MiByte):562.44 GByte/s
L2-Cache-Bandwidth of Chunk no. 14 (224 MiByte to 240 MiByte):561.22 GByte/s
L2-Cache-Bandwidth of Chunk no. 15 (240 MiByte to 256 MiByte):561.86 GByte/s
L2-Cache-Bandwidth of Chunk no. 16 (256 MiByte to 272 MiByte):561.16 GByte/s
L2-Cache-Bandwidth of Chunk no. 17 (272 MiByte to 288 MiByte):561.87 GByte/s
L2-Cache-Bandwidth of Chunk no. 18 (288 MiByte to 304 MiByte):560.48 GByte/s
L2-Cache-Bandwidth of Chunk no. 19 (304 MiByte to 320 MiByte):561.50 GByte/s
L2-Cache-Bandwidth of Chunk no. 20 (320 MiByte to 336 MiByte):561.20 GByte/s
L2-Cache-Bandwidth of Chunk no. 21 (336 MiByte to 352 MiByte):561.69 GByte/s
L2-Cache-Bandwidth of Chunk no. 22 (352 MiByte to 368 MiByte):561.82 GByte/s
L2-Cache-Bandwidth of Chunk no. 23 (368 MiByte to 384 MiByte):561.01 GByte/s
L2-Cache-Bandwidth of Chunk no. 24 (384 MiByte to 400 MiByte):560.98 GByte/s
L2-Cache-Bandwidth of Chunk no. 25 (400 MiByte to 416 MiByte):562.06 GByte/s
L2-Cache-Bandwidth of Chunk no. 26 (416 MiByte to 432 MiByte):561.78 GByte/s
L2-Cache-Bandwidth of Chunk no. 27 (432 MiByte to 448 MiByte):562.05 GByte/s
L2-Cache-Bandwidth of Chunk no. 28 (448 MiByte to 464 MiByte):562.33 GByte/s
L2-Cache-Bandwidth of Chunk no. 29 (464 MiByte to 480 MiByte):561.85 GByte/s
L2-Cache-Bandwidth of Chunk no. 30 (480 MiByte to 496 MiByte):561.36 GByte/s
L2-Cache-Bandwidth of Chunk no. 31 (496 MiByte to 512 MiByte):562.09 GByte/s
L2-Cache-Bandwidth of Chunk no. 32 (512 MiByte to 528 MiByte):561.72 GByte/s
L2-Cache-Bandwidth of Chunk no. 33 (528 MiByte to 544 MiByte):561.20 GByte/s
L2-Cache-Bandwidth of Chunk no. 34 (544 MiByte to 560 MiByte):561.72 GByte/s
L2-Cache-Bandwidth of Chunk no. 35 (560 MiByte to 576 MiByte):561.77 GByte/s
L2-Cache-Bandwidth of Chunk no. 36 (576 MiByte to 592 MiByte):561.15 GByte/s
L2-Cache-Bandwidth of Chunk no. 37 (592 MiByte to 608 MiByte):561.23 GByte/s
L2-Cache-Bandwidth of Chunk no. 38 (608 MiByte to 624 MiByte):561.66 GByte/s
L2-Cache-Bandwidth of Chunk no. 39 (624 MiByte to 640 MiByte):562.18 GByte/s
L2-Cache-Bandwidth of Chunk no. 40 (640 MiByte to 656 MiByte):561.31 GByte/s
L2-Cache-Bandwidth of Chunk no. 41 (656 MiByte to 672 MiByte):560.92 GByte/s
L2-Cache-Bandwidth of Chunk no. 42 (672 MiByte to 688 MiByte):561.15 GByte/s
L2-Cache-Bandwidth of Chunk no. 43 (688 MiByte to 704 MiByte):560.94 GByte/s
L2-Cache-Bandwidth of Chunk no. 44 (704 MiByte to 720 MiByte):561.28 GByte/s
L2-Cache-Bandwidth of Chunk no. 45 (720 MiByte to 736 MiByte):561.22 GByte/s
L2-Cache-Bandwidth of Chunk no. 46 (736 MiByte to 752 MiByte):561.26 GByte/s
L2-Cache-Bandwidth of Chunk no. 47 (752 MiByte to 768 MiByte):561.46 GByte/s
L2-Cache-Bandwidth of Chunk no. 48 (768 MiByte to 784 MiByte):561.81 GByte/s
L2-Cache-Bandwidth of Chunk no. 49 (784 MiByte to 800 MiByte):561.89 GByte/s
L2-Cache-Bandwidth of Chunk no. 50 (800 MiByte to 816 MiByte):561.40 GByte/s
L2-Cache-Bandwidth of Chunk no. 51 (816 MiByte to 832 MiByte):561.16 GByte/s
L2-Cache-Bandwidth of Chunk no. 52 (832 MiByte to 848 MiByte):561.28 GByte/s
L2-Cache-Bandwidth of Chunk no. 53 (848 MiByte to 864 MiByte):560.93 GByte/s
L2-Cache-Bandwidth of Chunk no. 54 (864 MiByte to 880 MiByte):561.00 GByte/s
L2-Cache-Bandwidth of Chunk no. 55 (880 MiByte to 896 MiByte):561.36 GByte/s
L2-Cache-Bandwidth of Chunk no. 56 (896 MiByte to 912 MiByte):562.76 GByte/s
L2-Cache-Bandwidth of Chunk no. 57 (912 MiByte to 928 MiByte):561.75 GByte/s
L2-Cache-Bandwidth of Chunk no. 58 (928 MiByte to 944 MiByte):561.54 GByte/s
L2-Cache-Bandwidth of Chunk no. 59 (944 MiByte to 960 MiByte):561.97 GByte/s
L2-Cache-Bandwidth of Chunk no. 60 (960 MiByte to 976 MiByte):562.46 GByte/s
L2-Cache-Bandwidth of Chunk no. 61 (976 MiByte to 992 MiByte):561.10 GByte/s
L2-Cache-Bandwidth of Chunk no. 62 (992 MiByte to 1008 MiByte):561.99 GByte/s
L2-Cache-Bandwidth of Chunk no. 63 (1008 MiByte to 1024 MiByte):561.81 GByte/s
L2-Cache-Bandwidth of Chunk no. 64 (1024 MiByte to 1040 MiByte):561.44 GByte/s
L2-Cache-Bandwidth of Chunk no. 65 (1040 MiByte to 1056 MiByte):561.82 GByte/s
L2-Cache-Bandwidth of Chunk no. 66 (1056 MiByte to 1072 MiByte):562.04 GByte/s
L2-Cache-Bandwidth of Chunk no. 67 (1072 MiByte to 1088 MiByte):561.66 GByte/s
L2-Cache-Bandwidth of Chunk no. 68 (1088 MiByte to 1104 MiByte):562.03 GByte/s
L2-Cache-Bandwidth of Chunk no. 69 (1104 MiByte to 1120 MiByte):561.78 GByte/s
L2-Cache-Bandwidth of Chunk no. 70 (1120 MiByte to 1136 MiByte):562.45 GByte/s
L2-Cache-Bandwidth of Chunk no. 71 (1136 MiByte to 1152 MiByte):562.34 GByte/s
L2-Cache-Bandwidth of Chunk no. 72 (1152 MiByte to 1168 MiByte):562.15 GByte/s
L2-Cache-Bandwidth of Chunk no. 73 (1168 MiByte to 1184 MiByte):562.31 GByte/s
L2-Cache-Bandwidth of Chunk no. 74 (1184 MiByte to 1200 MiByte):561.44 GByte/s
L2-Cache-Bandwidth of Chunk no. 75 (1200 MiByte to 1216 MiByte):561.35 GByte/s
L2-Cache-Bandwidth of Chunk no. 76 (1216 MiByte to 1232 MiByte):562.17 GByte/s
L2-Cache-Bandwidth of Chunk no. 77 (1232 MiByte to 1248 MiByte):562.18 GByte/s
L2-Cache-Bandwidth of Chunk no. 78 (1248 MiByte to 1264 MiByte):561.48 GByte/s
L2-Cache-Bandwidth of Chunk no. 79 (1264 MiByte to 1280 MiByte):561.52 GByte/s
L2-Cache-Bandwidth of Chunk no. 80 (1280 MiByte to 1296 MiByte):562.42 GByte/s
L2-Cache-Bandwidth of Chunk no. 81 (1296 MiByte to 1312 MiByte):561.26 GByte/s
L2-Cache-Bandwidth of Chunk no. 82 (1312 MiByte to 1328 MiByte):561.97 GByte/s
L2-Cache-Bandwidth of Chunk no. 83 (1328 MiByte to 1344 MiByte):561.47 GByte/s
L2-Cache-Bandwidth of Chunk no. 84 (1344 MiByte to 1360 MiByte):560.76 GByte/s
L2-Cache-Bandwidth of Chunk no. 85 (1360 MiByte to 1376 MiByte):561.24 GByte/s
L2-Cache-Bandwidth of Chunk no. 86 (1376 MiByte to 1392 MiByte):561.84 GByte/s
L2-Cache-Bandwidth of Chunk no. 87 (1392 MiByte to 1408 MiByte):561.96 GByte/s
L2-Cache-Bandwidth of Chunk no. 88 (1408 MiByte to 1424 MiByte):560.70 GByte/s
L2-Cache-Bandwidth of Chunk no. 89 (1424 MiByte to 1440 MiByte):562.40 GByte/s
L2-Cache-Bandwidth of Chunk no. 90 (1440 MiByte to 1456 MiByte):561.99 GByte/s
L2-Cache-Bandwidth of Chunk no. 91 (1456 MiByte to 1472 MiByte):561.04 GByte/s
L2-Cache-Bandwidth of Chunk no. 92 (1472 MiByte to 1488 MiByte):561.20 GByte/s
L2-Cache-Bandwidth of Chunk no. 93 (1488 MiByte to 1504 MiByte):562.32 GByte/s
L2-Cache-Bandwidth of Chunk no. 94 (1504 MiByte to 1520 MiByte):561.52 GByte/s
L2-Cache-Bandwidth of Chunk no. 95 (1520 MiByte to 1536 MiByte):561.06 GByte/s
L2-Cache-Bandwidth of Chunk no. 96 (1536 MiByte to 1552 MiByte):562.36 GByte/s
L2-Cache-Bandwidth of Chunk no. 97 (1552 MiByte to 1568 MiByte):562.39 GByte/s
L2-Cache-Bandwidth of Chunk no. 98 (1568 MiByte to 1584 MiByte):562.44 GByte/s
L2-Cache-Bandwidth of Chunk no. 99 (1584 MiByte to 1600 MiByte):562.16 GByte/s
L2-Cache-Bandwidth of Chunk no. 100 (1600 MiByte to 1616 MiByte):561.25 GByte/s

L2-Cache-Bandwidth of Chunk no. 101 (1616 MiByte to 1632 MiByte):562.50 GByte/s

L2-Cache-Bandwidth of Chunk no. 102 (1632 MiByte to 1648 MiByte):561.70 GByte/s

L2-Cache-Bandwidth of Chunk no. 103 (1648 MiByte to 1664 MiByte):561.60 GByte/s

L2-Cache-Bandwidth of Chunk no. 104 (1664 MiByte to 1680 MiByte):560.91 GByte/s

L2-Cache-Bandwidth of Chunk no. 105 (1680 MiByte to 1696 MiByte):562.01 GByte/s

L2-Cache-Bandwidth of Chunk no. 106 (1696 MiByte to 1712 MiByte):561.30 GByte/s

L2-Cache-Bandwidth of Chunk no. 107 (1712 MiByte to 1728 MiByte):561.81 GByte/s

L2-Cache-Bandwidth of Chunk no. 108 (1728 MiByte to 1744 MiByte):561.56 GByte/s

L2-Cache-Bandwidth of Chunk no. 109 (1744 MiByte to 1760 MiByte):562.12 GByte/s

L2-Cache-Bandwidth of Chunk no. 110 (1760 MiByte to 1776 MiByte):561.45 GByte/s

L2-Cache-Bandwidth of Chunk no. 111 (1776 MiByte to 1792 MiByte):561.87 GByte/s

L2-Cache-Bandwidth of Chunk no. 112 (1792 MiByte to 1808 MiByte):562.20 GByte/s

L2-Cache-Bandwidth of Chunk no. 113 (1808 MiByte to 1824 MiByte):560.94 GByte/s

L2-Cache-Bandwidth of Chunk no. 114 (1824 MiByte to 1840 MiByte):560.89 GByte/s

L2-Cache-Bandwidth of Chunk no. 115 (1840 MiByte to 1856 MiByte):561.36 GByte/s

L2-Cache-Bandwidth of Chunk no. 116 (1856 MiByte to 1872 MiByte):562.25 GByte/s

L2-Cache-Bandwidth of Chunk no. 117 (1872 MiByte to 1888 MiByte):561.90 GByte/s

L2-Cache-Bandwidth of Chunk no. 118 (1888 MiByte to 1904 MiByte):562.09 GByte/s

L2-Cache-Bandwidth of Chunk no. 119 (1904 MiByte to 1920 MiByte):561.50 GByte/s

L2-Cache-Bandwidth of Chunk no. 120 (1920 MiByte to 1936 MiByte):561.60 GByte/s

L2-Cache-Bandwidth of Chunk no. 121 (1936 MiByte to 1952 MiByte):562.39 GByte/s

L2-Cache-Bandwidth of Chunk no. 122 (1952 MiByte to 1968 MiByte):561.73 GByte/s

L2-Cache-Bandwidth of Chunk no. 123 (1968 MiByte to 1984 MiByte):561.78 GByte/s

L2-Cache-Bandwidth of Chunk no. 124 (1984 MiByte to 2000 MiByte):561.40 GByte/s

L2-Cache-Bandwidth of Chunk no. 125 (2000 MiByte to 2016 MiByte):561.64 GByte/s

L2-Cache-Bandwidth of Chunk no. 126 (2016 MiByte to 2032 MiByte):561.89 GByte/s

L2-Cache-Bandwidth of Chunk no. 127 (2032 MiByte to 2048 MiByte):561.03 GByte/s

L2-Cache-Bandwidth of Chunk no. 128 (2048 MiByte to 2064 MiByte):561.60 GByte/s

L2-Cache-Bandwidth of Chunk no. 129 (2064 MiByte to 2080 MiByte):561.67 GByte/s

L2-Cache-Bandwidth of Chunk no. 130 (2080 MiByte to 2096 MiByte):562.15 GByte/s

L2-Cache-Bandwidth of Chunk no. 131 (2096 MiByte to 2112 MiByte):560.31 GByte/s

L2-Cache-Bandwidth of Chunk no. 132 (2112 MiByte to 2128 MiByte):562.23 GByte/s

L2-Cache-Bandwidth of Chunk no. 133 (2128 MiByte to 2144 MiByte):561.77 GByte/s

L2-Cache-Bandwidth of Chunk no. 134 (2144 MiByte to 2160 MiByte):562.13 GByte/s

L2-Cache-Bandwidth of Chunk no. 135 (2160 MiByte to 2176 MiByte):561.97 GByte/s

L2-Cache-Bandwidth of Chunk no. 136 (2176 MiByte to 2192 MiByte):561.92 GByte/s

L2-Cache-Bandwidth of Chunk no. 137 (2192 MiByte to 2208 MiByte):561.99 GByte/s

L2-Cache-Bandwidth of Chunk no. 138 (2208 MiByte to 2224 MiByte):561.86 GByte/s

L2-Cache-Bandwidth of Chunk no. 139 (2224 MiByte to 2240 MiByte):562.17 GByte/s

L2-Cache-Bandwidth of Chunk no. 140 (2240 MiByte to 2256 MiByte):561.84 GByte/s

L2-Cache-Bandwidth of Chunk no. 141 (2256 MiByte to 2272 MiByte):561.09 GByte/s

L2-Cache-Bandwidth of Chunk no. 142 (2272 MiByte to 2288 MiByte):561.67 GByte/s

L2-Cache-Bandwidth of Chunk no. 143 (2288 MiByte to 2304 MiByte):562.52 GByte/s

L2-Cache-Bandwidth of Chunk no. 144 (2304 MiByte to 2320 MiByte):561.61 GByte/s

L2-Cache-Bandwidth of Chunk no. 145 (2320 MiByte to 2336 MiByte):561.87 GByte/s

L2-Cache-Bandwidth of Chunk no. 146 (2336 MiByte to 2352 MiByte):562.11 GByte/s

L2-Cache-Bandwidth of Chunk no. 147 (2352 MiByte to 2368 MiByte):561.67 GByte/s

L2-Cache-Bandwidth of Chunk no. 148 (2368 MiByte to 2384 MiByte):561.47 GByte/s

L2-Cache-Bandwidth of Chunk no. 149 (2384 MiByte to 2400 MiByte):561.60 GByte/s

L2-Cache-Bandwidth of Chunk no. 150 (2400 MiByte to 2416 MiByte):561.71 GByte/s

L2-Cache-Bandwidth of Chunk no. 151 (2416 MiByte to 2432 MiByte):562.10 GByte/s

L2-Cache-Bandwidth of Chunk no. 152 (2432 MiByte to 2448 MiByte):561.51 GByte/s

L2-Cache-Bandwidth of Chunk no. 153 (2448 MiByte to 2464 MiByte):561.57 GByte/s

L2-Cache-Bandwidth of Chunk no. 154 (2464 MiByte to 2480 MiByte):561.32 GByte/s

L2-Cache-Bandwidth of Chunk no. 155 (2480 MiByte to 2496 MiByte):561.83 GByte/s

L2-Cache-Bandwidth of Chunk no. 156 (2496 MiByte to 2512 MiByte):561.34 GByte/s

L2-Cache-Bandwidth of Chunk no. 157 (2512 MiByte to 2528 MiByte):561.74 GByte/s

L2-Cache-Bandwidth of Chunk no. 158 (2528 MiByte to 2544 MiByte):561.03 GByte/s

L2-Cache-Bandwidth of Chunk no. 159 (2544 MiByte to 2560 MiByte):561.28 GByte/s

L2-Cache-Bandwidth of Chunk no. 160 (2560 MiByte to 2576 MiByte):560.94 GByte/s

L2-Cache-Bandwidth of Chunk no. 161 (2576 MiByte to 2592 MiByte):561.56 GByte/s

L2-Cache-Bandwidth of Chunk no. 162 (2592 MiByte to 2608 MiByte):561.05 GByte/s

L2-Cache-Bandwidth of Chunk no. 163 (2608 MiByte to 2624 MiByte):561.53 GByte/s

L2-Cache-Bandwidth of Chunk no. 164 (2624 MiByte to 2640 MiByte):561.73 GByte/s

L2-Cache-Bandwidth of Chunk no. 165 (2640 MiByte to 2656 MiByte):561.95 GByte/s

L2-Cache-Bandwidth of Chunk no. 166 (2656 MiByte to 2672 MiByte):561.99 GByte/s

L2-Cache-Bandwidth of Chunk no. 167 (2672 MiByte to 2688 MiByte):561.96 GByte/s

L2-Cache-Bandwidth of Chunk no. 168 (2688 MiByte to 2704 MiByte):562.21 GByte/s

L2-Cache-Bandwidth of Chunk no. 169 (2704 MiByte to 2720 MiByte):562.16 GByte/s

L2-Cache-Bandwidth of Chunk no. 170 (2720 MiByte to 2736 MiByte):561.98 GByte/s

L2-Cache-Bandwidth of Chunk no. 171 (2736 MiByte to 2752 MiByte):562.10 GByte/s

L2-Cache-Bandwidth of Chunk no. 172 (2752 MiByte to 2768 MiByte):561.71 GByte/s

L2-Cache-Bandwidth of Chunk no. 173 (2768 MiByte to 2784 MiByte):561.76 GByte/s

L2-Cache-Bandwidth of Chunk no. 174 (2784 MiByte to 2800 MiByte):561.42 GByte/s

L2-Cache-Bandwidth of Chunk no. 175 (2800 MiByte to 2816 MiByte):562.61 GByte/s

L2-Cache-Bandwidth of Chunk no. 176 (2816 MiByte to 2832 MiByte):561.28 GByte/s

L2-Cache-Bandwidth of Chunk no. 177 (2832 MiByte to 2848 MiByte):562.05 GByte/s

L2-Cache-Bandwidth of Chunk no. 178 (2848 MiByte to 2864 MiByte):561.94 GByte/s

L2-Cache-Bandwidth of Chunk no. 179 (2864 MiByte to 2880 MiByte):561.26 GByte/s

L2-Cache-Bandwidth of Chunk no. 180 (2880 MiByte to 2896 MiByte):561.96 GByte/s

L2-Cache-Bandwidth of Chunk no. 181 (2896 MiByte to 2912 MiByte):562.14 GByte/s

Press any key to continue . . .

 

Is it possible that it is intentional design to allow nVidia partnered developer studios the full 4Gb allocation e.g. COD, watchdogs, assassins creed.

Or it could be an intentional design drawback to keep it from surpassing the GTX980 as well as to hold back the card for a refresh later with "more bandwidth". Since its something that has been going on since the release of the GPU.

Does this mean nVidia has been committing fraud and selling fake 256bit 970s, only time will tell if it is a bug or the latter.

 

hello guru3d,

nice to see you quote my screenshot in the news.
i originally provided the gtx 980 results for the 3dcenter forum, dont worry about copyright, i just want to reveal what nvidia tries to hide.

due to freedom of speech issues i decided to leave the 3dcenter forum. hoping people can deal with the truth here and maybe there are even more experts

did anyone notice that all 970 are slower in nai's dram-bandwith than the 980?
already mentioned it in german, but nobody seems to care:

its often ~149gb/s(970) against ~178gb/s(980)
13,4/16*178gb/s = 149gb/s

the l2 performance seems to be 13,4/16 of the 980.

performance should actually be 13/16 compared to
13/16*2048 shader vs -> 1664
13/16*256bit -> 208bit

i also did a clock adjusted comparision and the l2 performance is also
13,4/16 slower.

this seems to indicate that there is no 256bit interface.
but be careful mem-oc via afterburner does not apply to nai's benchmark.

pardon me for my english

another interesting fact:
results vary max 1gb/s and are perfectly recreatable on my 980. havent seen that on 970 so far.

 

what I am wondering about is whether this problem is enough of a reason to RMA it?

 

Damn the numbers on my card look bad dropping off at 2688 MiByte to 2816 MiByte

Code:

Nai's Benchmark, edited by VultureX
  Device: GeForce GTX 970 (4.00 GB)
  Memory Bus Width (bits): 256
  Peak Theoretical DRAM Bandwidth (GB/s): 224.320000

Allocating Memory . . .
Chunk Size: 128 MiByte
Allocated 30 Chunks
Allocated 3840 MiByte
Benchmarking DRAM
DRAM-Bandwidth of Chunk no. 0 (0 MiByte to 128 MiByte):155.76 GByte/s
DRAM-Bandwidth of Chunk no. 1 (128 MiByte to 256 MiByte):155.59 GByte/s
DRAM-Bandwidth of Chunk no. 2 (256 MiByte to 384 MiByte):155.62 GByte/s
DRAM-Bandwidth of Chunk no. 3 (384 MiByte to 512 MiByte):155.98 GByte/s
DRAM-Bandwidth of Chunk no. 4 (512 MiByte to 640 MiByte):155.64 GByte/s
DRAM-Bandwidth of Chunk no. 5 (640 MiByte to 768 MiByte):155.88 GByte/s
DRAM-Bandwidth of Chunk no. 6 (768 MiByte to 896 MiByte):155.78 GByte/s
DRAM-Bandwidth of Chunk no. 7 (896 MiByte to 1024 MiByte):155.62 GByte/s
DRAM-Bandwidth of Chunk no. 8 (1024 MiByte to 1152 MiByte):155.98 GByte/s
DRAM-Bandwidth of Chunk no. 9 (1152 MiByte to 1280 MiByte):155.64 GByte/s
DRAM-Bandwidth of Chunk no. 10 (1280 MiByte to 1408 MiByte):155.98 GByte/s
DRAM-Bandwidth of Chunk no. 11 (1408 MiByte to 1536 MiByte):155.51 GByte/s
DRAM-Bandwidth of Chunk no. 12 (1536 MiByte to 1664 MiByte):155.66 GByte/s
DRAM-Bandwidth of Chunk no. 13 (1664 MiByte to 1792 MiByte):156.02 GByte/s
DRAM-Bandwidth of Chunk no. 14 (1792 MiByte to 1920 MiByte):155.66 GByte/s
DRAM-Bandwidth of Chunk no. 15 (1920 MiByte to 2048 MiByte):156.01 GByte/s
DRAM-Bandwidth of Chunk no. 16 (2048 MiByte to 2176 MiByte):155.66 GByte/s
DRAM-Bandwidth of Chunk no. 17 (2176 MiByte to 2304 MiByte):155.66 GByte/s
DRAM-Bandwidth of Chunk no. 18 (2304 MiByte to 2432 MiByte):156.01 GByte/s
DRAM-Bandwidth of Chunk no. 19 (2432 MiByte to 2560 MiByte):155.65 GByte/s
DRAM-Bandwidth of Chunk no. 20 (2560 MiByte to 2688 MiByte):156.02 GByte/s
DRAM-Bandwidth of Chunk no. 21 (2688 MiByte to 2816 MiByte):22.35 GByte/s
DRAM-Bandwidth of Chunk no. 22 (2816 MiByte to 2944 MiByte):67.63 GByte/s
DRAM-Bandwidth of Chunk no. 23 (2944 MiByte to 3072 MiByte):22.35 GByte/s
DRAM-Bandwidth of Chunk no. 24 (3072 MiByte to 3200 MiByte):22.35 GByte/s
DRAM-Bandwidth of Chunk no. 25 (3200 MiByte to 3328 MiByte):46.80 GByte/s
DRAM-Bandwidth of Chunk no. 26 (3328 MiByte to 3456 MiByte):155.96 GByte/s
DRAM-Bandwidth of Chunk no. 27 (3456 MiByte to 3584 MiByte):67.69 GByte/s
DRAM-Bandwidth of Chunk no. 28 (3584 MiByte to 3712 MiByte): 5.93 GByte/s
DRAM-Bandwidth of Chunk no. 29 (3712 MiByte to 3840 MiByte): 5.92 GByte/s
Benchmarking L2-Cache
L2-Cache-Bandwidth of Chunk no. 0 (0 MiByte to 128 MiByte):438.96 GByte/s
L2-Cache-Bandwidth of Chunk no. 1 (128 MiByte to 256 MiByte):438.97 GByte/s
L2-Cache-Bandwidth of Chunk no. 2 (256 MiByte to 384 MiByte):438.65 GByte/s
L2-Cache-Bandwidth of Chunk no. 3 (384 MiByte to 512 MiByte):438.93 GByte/s
L2-Cache-Bandwidth of Chunk no. 4 (512 MiByte to 640 MiByte):438.61 GByte/s
L2-Cache-Bandwidth of Chunk no. 5 (640 MiByte to 768 MiByte):438.99 GByte/s
L2-Cache-Bandwidth of Chunk no. 6 (768 MiByte to 896 MiByte):438.69 GByte/s
L2-Cache-Bandwidth of Chunk no. 7 (896 MiByte to 1024 MiByte):438.80 GByte/s
L2-Cache-Bandwidth of Chunk no. 8 (1024 MiByte to 1152 MiByte):438.57 GByte/s
L2-Cache-Bandwidth of Chunk no. 9 (1152 MiByte to 1280 MiByte):438.72 GByte/s
L2-Cache-Bandwidth of Chunk no. 10 (1280 MiByte to 1408 MiByte):438.95 GByte/s
L2-Cache-Bandwidth of Chunk no. 11 (1408 MiByte to 1536 MiByte):438.82 GByte/s
L2-Cache-Bandwidth of Chunk no. 12 (1536 MiByte to 1664 MiByte):438.76 GByte/s
L2-Cache-Bandwidth of Chunk no. 13 (1664 MiByte to 1792 MiByte):438.94 GByte/s
L2-Cache-Bandwidth of Chunk no. 14 (1792 MiByte to 1920 MiByte):438.96 GByte/s
L2-Cache-Bandwidth of Chunk no. 15 (1920 MiByte to 2048 MiByte):438.84 GByte/s
L2-Cache-Bandwidth of Chunk no. 16 (2048 MiByte to 2176 MiByte):438.83 GByte/s
L2-Cache-Bandwidth of Chunk no. 17 (2176 MiByte to 2304 MiByte):438.69 GByte/s
L2-Cache-Bandwidth of Chunk no. 18 (2304 MiByte to 2432 MiByte):438.71 GByte/s
L2-Cache-Bandwidth of Chunk no. 19 (2432 MiByte to 2560 MiByte):438.80 GByte/s
L2-Cache-Bandwidth of Chunk no. 20 (2560 MiByte to 2688 MiByte):439.00 GByte/s
L2-Cache-Bandwidth of Chunk no. 21 (2688 MiByte to 2816 MiByte):78.30 GByte/s
L2-Cache-Bandwidth of Chunk no. 22 (2816 MiByte to 2944 MiByte):218.75 GByte/s
L2-Cache-Bandwidth of Chunk no. 23 (2944 MiByte to 3072 MiByte):78.30 GByte/s
L2-Cache-Bandwidth of Chunk no. 24 (3072 MiByte to 3200 MiByte):78.30 GByte/s
L2-Cache-Bandwidth of Chunk no. 25 (3200 MiByte to 3328 MiByte):156.85 GByte/s
L2-Cache-Bandwidth of Chunk no. 26 (3328 MiByte to 3456 MiByte):438.86 GByte/s
L2-Cache-Bandwidth of Chunk no. 27 (3456 MiByte to 3584 MiByte): 7.42 GByte/s
L2-Cache-Bandwidth of Chunk no. 28 (3584 MiByte to 3712 MiByte): 5.92 GByte/s
L2-Cache-Bandwidth of Chunk no. 29 (3712 MiByte to 3840 MiByte):25.83 GByte/s
Press any key to continue . . .

 

Turns out that this program, after finishing, evicts all the memory as soon as more is needed, as I've mentioned earlier, so you can't use it to force your card to use more memory.

However if I (via another CUDA program) force the memory to remain used, some games show a serious performance drop if you try to force more than 3500MB of usage. Far Cry 4 becomes a stutter fest. Other games like WolfenStein and old DX9 games seem barely affected at all when the memory usage is over 4000MB.
The funny thing is that in Far Cry 4 the card does whatever it can NOT to go over 3500MB. It's a huge stutter fest when it uses like 3600MB, but it does not try to allocate more.

 

You have to run the test in IGP/headless mode or it will show worse results.

 

No it does not mean they've been committing fraud, it is a physcial 256-bit bus and with 4gb vram. It just means theres a fault/bug in the hardware or driver that does not allow it to use the last 500mb or so of vram effectively. Me, I dont care. Perfectly happy with the way the card has performed so far and would buy it again in retrospect.. even if it was 3gb card.

 

I did notice about the different bandwidth shown byt 970 and 980. That why I have been asking if anyone with GTX 780 and GTX 780 TI can run the bench to verify the issue.

Either 650TI Boost and 660 as well.

 

A few posts back, I posted my results. I get 190GB/s.