NVIDIA GeForce GTX 680 - Post your default and manual overclocks

1,254 MHz (actually that should be 1,249 MHz) was the number I saw come up the most in Afterburner's OSD so I posted that but I did see highs of 1,262 MHz in some games! The difference is (1,262 MHz less 1,006 MHz) +256 MHz from the default core clock with +125 MHz set as the core offset so that means my card can handle an extra 131 MHz more.

I guess the differences depend on how far the card can clock itself and no two cards are alike. I noticed that by default your card doesn't clock itself as high as mine anyway: 1,084 MHz for yours vs. 1,137 MHz for mine.

 

Crysis Warhead results of the three maps using japamd's Benchmarking Tool:

Processor: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz @ 3600 Mhz
CPU ID: Intel64 Family 6 Model 26 Stepping 4
Operating System: Microsoft Windows 7 Home Premium Service Pack 1
Physical memory: 5.99 GB
Display adapter: NVIDIA GeForce GTX 680 2048 MB
Video Processor: GeForce GTX 680
Driver version: 8.17.13.110 (20120317000000.000000-000)
Motherboard: ASUS P6T DELUXE Rev 1.xx

==============================================================
TimeDemo Play Started , (Total Frames: 3502, Recorded Time: 92.69s)
!TimeDemo Run 0 Finished.
Play Time: 61.21s, Average FPS: 57.21
Min FPS: 45.81 at frame 1772, Max FPS: 72.19 at frame 777
Average Tri/Sec: 27790724, Tri/Frame: 485743
Recorded/Played Tris ratio: 1.07
!TimeDemo Run 1 Finished.
Play Time: 59.41s, Average FPS: 58.95
Min FPS: 45.68 at frame 1783, Max FPS: 72.19 at frame 777
Average Tri/Sec: 30499276, Tri/Frame: 517406
Recorded/Played Tris ratio: 1.01
!TimeDemo Run 2 Finished.
Play Time: 59.30s, Average FPS: 59.05
Min FPS: 45.56 at frame 1775, Max FPS: 72.19 at frame 777
Average Tri/Sec: 30450960, Tri/Frame: 515665
Recorded/Played Tris ratio: 1.01
TimeDemo Play Ended, (3 Runs Performed)
==============================================================

==============================================================
TimeDemo Play Started , (Total Frames: 3145, Recorded Time: 83.68s)
!TimeDemo Run 0 Finished.
Play Time: 50.56s, Average FPS: 62.21
Min FPS: 46.92 at frame 1226, Max FPS: 86.77 at frame 832
Average Tri/Sec: -14728492, Tri/Frame: -236763
Recorded/Played Tris ratio: 0.52
!TimeDemo Run 1 Finished.
Play Time: 48.86s, Average FPS: 64.36
Min FPS: 46.29 at frame 1222, Max FPS: 89.95 at frame 816
Average Tri/Sec: -14840132, Tri/Frame: -230575
Recorded/Played Tris ratio: 0.53
!TimeDemo Run 2 Finished.
Play Time: 48.90s, Average FPS: 64.31
Min FPS: 46.13 at frame 1219, Max FPS: 90.40 at frame 810
Average Tri/Sec: -14822409, Tri/Frame: -230473
Recorded/Played Tris ratio: 0.53
TimeDemo Play Ended, (3 Runs Performed)
==============================================================

==============================================================
TimeDemo Play Started , (Total Frames: 1882, Recorded Time: 56.90s)
!TimeDemo Run 0 Finished.
Play Time: 36.33s, Average FPS: 51.80
Min FPS: 37.35 at frame 1672, Max FPS: 61.41 at frame 181
Average Tri/Sec: -8188845, Tri/Frame: -158097
Recorded/Played Tris ratio: 1.18
!TimeDemo Run 1 Finished.
Play Time: 35.30s, Average FPS: 53.31
Min FPS: 36.95 at frame 1657, Max FPS: 63.66 at frame 1572
Average Tri/Sec: -7532813, Tri/Frame: -141308
Recorded/Played Tris ratio: 1.32
!TimeDemo Run 2 Finished.
Play Time: 35.39s, Average FPS: 53.17
Min FPS: 36.95 at frame 1657, Max FPS: 65.20 at frame 67
Average Tri/Sec: -7354396, Tri/Frame: -138311
Recorded/Played Tris ratio: 1.35
TimeDemo Play Ended, (3 Runs Performed)
==============================================================

//////////// Summary \\\\\\\\\\\\\

03 27 2012 08:30:12 - Microsoft Windows 7 Home Premium Service Pack 1

DirectX 10 ENTHUSIAST 3X @ Map: ambush @ 0 1920 x 1200 AA 4x
==> Framerate [ Min: 45.62 Max: 72.19 Avg: 59.00 ]

DirectX 10 ENTHUSIAST 3X @ Map: avalanche @ 0 1920 x 1200 AA 4x
==> Framerate [ Min: 46.21 Max: 90.18 Avg: 64.34 ]

DirectX 10 ENTHUSIAST 3X @ Map: frost @ 0 1920 x 1200 AA 4x
==> Framerate [ Min: 36.95 Max: 64.43 Avg: 53.24 ]

Can my PC run Crysis? Hell, damn, yeah!!!

 

Unboxed my card yesterday evening (what a wonderful 5mins that was) and plugged it inside my Fractal R3 case with only 4 fans (800rpm, 3 in, 1 out). Then I ran Unigine and the card performed really well though got a bit hotter than you guys wrote. I hit 80 degrees and the fan climbed up to 56-58% activity. I actually got shocked how quiet the fan is at those speeds since my old 5850s yielded much more noise even at 40% activity. I don't really mind high temps like this but I guess I could plug in a few more fans (1 side in, 1 top out) and maybe even get 1200rpm ones instead of 800rpm.

The card boosted itself up to 1100MHz while playing BF3 and I guess I didnt get 1137MHz like you guys due to the "high" temps.

 

+132% power
+135Mhz core
+550Mhz Mem

Runs @ 1232MHz

custom fan curve

3Dmark 11 score 10405

Moar benchmarking and OC'ing tonight!

@ Darren, I'll look to see what my card clocks to at stock this evening

 

No, both games support up to 16xQ AA but the visual improvement over 4xMSAA becomes significantly less noticeable above that so I've never played it on that setting. If I remember though I'll benchmark it on that AA setting just out of curiosity.

 

I tried the following settings for a stable overclock using EVGA Precision X:
(MSI Afterburner won't remember my PowerTarget).

Stock GPU settings:
CPU Boost: 1084Mhz

FanSpeed Auto (Curve Preset 75%@65c)
PowerTarget 132% (Max)
CPU +66Mhz (1150Mhz total)
Mem +0Mhz

 

I managed to successfully run games and benchmarks with a core offset of +150 and a memory offset of +350 yesterday and saw speeds of up to 1,287 MHz on the core while running the memory at 6.7 GHz. I didn't see a single glitch, freeze or error to suggest that the card was being stressed beyond its means. Temps remained under 73 degrees C using a custom fan profile (i.e at 72 degrees C the fan speed would be at 72%). I was actually amazed at that as none of my previous attempts at overclocking on previous graphics cards, bearing in mind I'm loathe to tamper with voltages, have amounted to much more than a mild overclock for a couple of extra frames per second.

As I mentioned in another thread though, I did spot that the core clock was stuck at 705 MHz during a game and exiting and trying another showed the same clock speed. I double-checked that maximum performance was set (it was) and that it wasn't a bug with Afterburner's OSD (it wasn't as GPU-Z reported the same values too). The card still dropped to 324 MHz on the core on the desktop though. The only way I was able to reset the core back to its default of 1,006 MHz during games was by restarting my PC. I've no idea whether that 'hiccup' occurred because the overclock was too much for my card (in which case why didn't I see artifacts, freezing or an error message of some kind?) or whether it was a driver/hardware bug.

 

Both.

I've maxed out the Power Limiter at 132%, which is supposed to allowed for 132% x 195 W = 257 W (250 W is actually the limit I believe for PCI-E 2.0 with 2 x 6-pin connectors), and also raised the Core Clock and Memory Clock Offsets too. If you don't increase the Power Limiter then the card will be held back by its default 195 W TDP.

 

wow you got a nice card or is it a different bios ? on mine with +150 i go up to 1234mhz (or is it 1243mhz?) i think but its always stable it never move.

and when i increas more each +2 or +3 point add + 1 real clock speed and it never move. Like at +160 im 1250mhz stable somthing like that.

 

By default and out of the box so to speak (i.e without altering any settings at all) my GTX 680 will overclock itself to 1,137 MHz on the core in many games but it never goes higher than that (likely because of the 195 W TDP).

With a core clock offset of +150 MHz that means the baseline is 1,156 MHz (1,006 MHz + 150 MHz) but it will still clock up to 1,262-1287 MHz because I raised the power from 100% to 132%. I suspect that the +150 MHz core and +350 MHz memory clock offsets are the limit of my card though, especially if those values have led to the 'stuck 705 MHz core' issue I mentioned earlier.

 

P.S. Someone on the AVForums suggested the 'stuck' 705 MHz core issue may be due to the GTX 680 throttling itself when the GPU temperature exceeds 70ºC but that seems a bit over-zealous for a card with a stated thermal shutdown temperature of 98ºC. It also doesn't quite fit in with my experiences because when the core was stuck at 705 MHz, the GPU temperatures were below 70ºC anyway (around 63-65ºC actually).

I've asked for clarification on this over on the NVIDIA.com forum: http://forums.nvidia.com/index.php?showtopic=226073 so hopefully ManuelG will respond to it.

 

I use these settings, 100% stable:

Power Target: 132%
Gpu Clock Offset: +175mhz
Mem Clock Offset: +495mhz

Card idle at around 34-36 Celsius and full load its about 70+ Celsius.

 

The downclocking seems to be a result of the Dynamic Boost feature going a bit crazy and causing protection to kick in.

The guys at Guru3D even had this once when doing the overclocking review for the 680GTX. I have quoted them below -

"There is a downside though, sometimes the Dynamic boost feature went nuts on us and as protection clocked down the core frequency towards the 736 MHz range. Definitely a protection as only restarting the system would get the normal clocks back on their feet again. This happened to us only once though."

 

Thanks and very well spotted, Shadowsong316. So it's an intermittent bug then?

 

whats ur MHZ at +175 ?

 

Lol @ post 22, Crysis WH still hitting mid 30's on a card that came out 4 years later. For $500.

 

That's the minimum framerate though but my averages are overall higher than they were for my GTX 580 and the game as a result feels noticeably smoother to play. You never get consistent performance improvements across all games anyway when you buy a new card, it can vary depending on whether the game is CPU- or GPU-limited. Crysis Warhead is very much the later and not terribly well optimised at that even under DX10 but I still think it and the original Crysis are good games (better IMO than the sequel) so any improvement in the framerate is most welcome.

P.S. My PC's CPU, motherboard and memory are almost as old as Crysis Warhead anyway!

 

It is still pretty good i have the same exact harwdare than you or almost

Core I7 920 D0 @ 4ghz
Asus p6t deluxe v2
6gb OCZ platinum 1600 mhz
and xfi titanum fatality pro

i still kick the butt of core i7 2600k systems !! ahha old hardware FTW !!