RX 580 8G Last GB of VRAM is slow..? Reminds me of GTX 970 last 0.5GB

Discussion in 'Videocards - AMD Radeon' started by PieEyedPiper, May 15, 2020.

  1. Astyanax

    Astyanax Ancient Guru

    Messages:
    8,029
    Likes Received:
    2,672
    GPU:
    GTX 1080ti
    The only way you'll get full speed on the last GB of vram is if the card is not attached to a display.
     
  2. Only Intruder

    Only Intruder Maha Guru

    Messages:
    1,299
    Likes Received:
    237
    GPU:
    Sapphire Fury Nitro
    or in Vegas case, HBCC
     
  3. narukun

    narukun Master Guru

    Messages:
    214
    Likes Received:
    24
    GPU:
    EVGA GTX 970 1561/7700
    I don't think that is true I got full speed for all the 8gb ram using my display.

    Code:
    [0] Platform name: NVIDIA CUDA vendor:NVIDIA Corporation version:OpenCL 1.2 CUDA 11.0.197←[1;32m <-- selected ←[0m
            [0] Device Name: GeForce RTX 2080←[1;32m <-- selected ←[0m
                   Type: 4 (GPU: 4, CPU: 2)
                   Vendor: NVIDIA Corporation
                   Max Compute Units: 46
                   Global Memory: 8589934592
                   Max Clock Frequency: 1815
                   Max Alloc. Memory: 2147483648
                   Local Memory: 49152
                   Available: 1
    allocated 8589934592 bytes 8.00 GB
    Running Bench test on:GeForce RTX 2080
    Chunk:   0 (   0- 128)MB Speed: 388.92 GByte/s OK
    Chunk:   1 ( 128- 256)MB Speed: 387.43 GByte/s OK
    Chunk:   2 ( 256- 384)MB Speed: 387.83 GByte/s OK
    Chunk:   3 ( 384- 512)MB Speed: 393.39 GByte/s OK
    Chunk:   4 ( 512- 640)MB Speed: 394.35 GByte/s OK
    Chunk:   5 ( 640- 768)MB Speed: 392.28 GByte/s OK
    Chunk:   6 ( 768- 896)MB Speed: 392.67 GByte/s OK
    Chunk:   7 ( 896-1024)MB Speed: 393.35 GByte/s OK
    Chunk:   8 (1024-1152)MB Speed: 392.58 GByte/s OK
    Chunk:   9 (1152-1280)MB Speed: 392.60 GByte/s OK
    Chunk:  10 (1280-1408)MB Speed: 391.10 GByte/s OK
    Chunk:  11 (1408-1536)MB Speed: 393.22 GByte/s OK
    Chunk:  12 (1536-1664)MB Speed: 392.76 GByte/s OK
    Chunk:  13 (1664-1792)MB Speed: 391.84 GByte/s OK
    Chunk:  14 (1792-1920)MB Speed: 392.33 GByte/s OK
    Chunk:  15 (1920-2048)MB Speed: 391.93 GByte/s OK
    Chunk:  16 (2048-2176)MB Speed: 392.21 GByte/s OK
    Chunk:  17 (2176-2304)MB Speed: 392.45 GByte/s OK
    Chunk:  18 (2304-2432)MB Speed: 391.39 GByte/s OK
    Chunk:  19 (2432-2560)MB Speed: 393.93 GByte/s OK
    Chunk:  20 (2560-2688)MB Speed: 393.06 GByte/s OK
    Chunk:  21 (2688-2816)MB Speed: 391.85 GByte/s OK
    Chunk:  22 (2816-2944)MB Speed: 392.71 GByte/s OK
    Chunk:  23 (2944-3072)MB Speed: 391.54 GByte/s OK
    Chunk:  24 (3072-3200)MB Speed: 393.21 GByte/s OK
    Chunk:  25 (3200-3328)MB Speed: 393.14 GByte/s OK
    Chunk:  26 (3328-3456)MB Speed: 393.18 GByte/s OK
    Chunk:  27 (3456-3584)MB Speed: 393.47 GByte/s OK
    Chunk:  28 (3584-3712)MB Speed: 393.98 GByte/s OK
    Chunk:  29 (3712-3840)MB Speed: 391.33 GByte/s OK
    Chunk:  30 (3840-3968)MB Speed: 391.80 GByte/s OK
    Chunk:  31 (3968-4096)MB Speed: 391.49 GByte/s OK
    Chunk:  32 (4096-4224)MB Speed: 392.78 GByte/s OK
    Chunk:  33 (4224-4352)MB Speed: 392.20 GByte/s OK
    Chunk:  34 (4352-4480)MB Speed: 390.90 GByte/s OK
    Chunk:  35 (4480-4608)MB Speed: 392.50 GByte/s OK
    Chunk:  36 (4608-4736)MB Speed: 393.48 GByte/s OK
    Chunk:  37 (4736-4864)MB Speed: 391.96 GByte/s OK
    Chunk:  38 (4864-4992)MB Speed: 392.78 GByte/s OK
    Chunk:  39 (4992-5120)MB Speed: 391.82 GByte/s OK
    Chunk:  40 (5120-5248)MB Speed: 392.44 GByte/s OK
    Chunk:  41 (5248-5376)MB Speed: 391.93 GByte/s OK
    Chunk:  42 (5376-5504)MB Speed: 391.91 GByte/s OK
    Chunk:  43 (5504-5632)MB Speed: 391.62 GByte/s OK
    Chunk:  44 (5632-5760)MB Speed: 392.25 GByte/s OK
    Chunk:  45 (5760-5888)MB Speed: 391.88 GByte/s OK
    Chunk:  46 (5888-6016)MB Speed: 393.49 GByte/s OK
    Chunk:  47 (6016-6144)MB Speed: 391.95 GByte/s OK
    Chunk:  48 (6144-6272)MB Speed: 392.18 GByte/s OK
    Chunk:  49 (6272-6400)MB Speed: 392.43 GByte/s OK
    Chunk:  50 (6400-6528)MB Speed: 391.72 GByte/s OK
    Chunk:  51 (6528-6656)MB Speed: 390.47 GByte/s OK
    Chunk:  52 (6656-6784)MB Speed: 392.36 GByte/s OK
    Chunk:  53 (6784-6912)MB Speed: 393.68 GByte/s OK
    Chunk:  54 (6912-7040)MB Speed: 391.84 GByte/s OK
    Chunk:  55 (7040-7168)MB Speed: 396.00 GByte/s OK
    Chunk:  56 (7168-7296)MB Speed: 396.00 GByte/s OK
    Chunk:  57 (7296-7424)MB Speed: 396.00 GByte/s OK
    Chunk:  58 (7424-7552)MB Speed: 396.00 GByte/s OK
    Chunk:  59 (7552-7680)MB Speed: 396.00 GByte/s OK
    Chunk:  60 (7680-7808)MB Speed: 396.00 GByte/s OK
    Chunk:  61 (7808-7936)MB Speed: 396.00 GByte/s OK
    Chunk:  62 (7936-8064)MB Speed: 396.00 GByte/s OK
    Chunk:  63 (8064-8192)MB Speed: 396.00 GByte/s OK
     
  4. Fox2232

    Fox2232 Ancient Guru

    Messages:
    10,889
    Likes Received:
    2,807
    GPU:
    5700XT+AW@240Hz
    Yet you see no measured speed variation at all in last GB. Don't you question that?
     

  5. Max

    Max Member

    Messages:
    22
    Likes Received:
    7
    GPU:
    R9 390X
    390x here, what the hell?
    Code:
    [0] Platform name: AMD Accelerated Parallel Processing vendor:Advanced Micro Devices, Inc. version:OpenCL 2.1 AMD-APP (3110.7)[1;32m <-- selected [0m
        [0] Device Name: Hawaii[1;32m <-- selected [0m
               Type: 4 (GPU: 4, CPU: 2)
               Vendor: Advanced Micro Devices, Inc.
               Max Compute Units: 44
               Global Memory: 8589934592
               Max Clock Frequency: 1080
               Max Alloc. Memory: 7073274265
               Local Memory: 32768
               Available: 1
    allocated 8589934592 bytes 8.00 GB
    Running Bench test on:Hawaii
    Chunk:   0 (   0- 128)MB Speed: 287.97 GByte/s OK
    Chunk:   1 ( 128- 256)MB Speed: 288.37 GByte/s OK
    Chunk:   2 ( 256- 384)MB Speed: 288.12 GByte/s OK
    Chunk:   3 ( 384- 512)MB Speed: 288.15 GByte/s OK
    Chunk:   4 ( 512- 640)MB Speed: 288.17 GByte/s OK
    Chunk:   5 ( 640- 768)MB Speed: 288.24 GByte/s OK
    Chunk:   6 ( 768- 896)MB Speed: 288.21 GByte/s OK
    Chunk:   7 ( 896-1024)MB Speed: 288.21 GByte/s OK
    Chunk:   8 (1024-1152)MB Speed: 288.61 GByte/s OK
    Chunk:   9 (1152-1280)MB Speed: 287.69 GByte/s OK
    Chunk:  10 (1280-1408)MB Speed: 288.48 GByte/s OK
    Chunk:  11 (1408-1536)MB Speed: 287.92 GByte/s OK
    Chunk:  12 (1536-1664)MB Speed: 288.26 GByte/s OK
    Chunk:  13 (1664-1792)MB Speed: 287.75 GByte/s OK
    Chunk:  14 (1792-1920)MB Speed: 288.51 GByte/s OK
    Chunk:  15 (1920-2048)MB Speed: 288.00 GByte/s OK
    Chunk:  16 (2048-2176)MB Speed: 288.16 GByte/s OK
    Chunk:  17 (2176-2304)MB Speed: 288.14 GByte/s OK
    Chunk:  18 (2304-2432)MB Speed: 288.08 GByte/s OK
    Chunk:  19 (2432-2560)MB Speed: 288.27 GByte/s OK
    Chunk:  20 (2560-2688)MB Speed: 288.32 GByte/s OK
    Chunk:  21 (2688-2816)MB Speed: 288.06 GByte/s OK
    Chunk:  22 (2816-2944)MB Speed: 287.97 GByte/s OK
    Chunk:  23 (2944-3072)MB Speed: 288.27 GByte/s OK
    Chunk:  24 (3072-3200)MB Speed: 288.37 GByte/s OK
    Chunk:  25 (3200-3328)MB Speed: 288.32 GByte/s OK
    Chunk:  26 (3328-3456)MB Speed: 288.27 GByte/s OK
    Chunk:  27 (3456-3584)MB Speed: 288.24 GByte/s OK
    Chunk:  28 (3584-3712)MB Speed: 288.42 GByte/s OK
    Chunk:  29 (3712-3840)MB Speed: 288.09 GByte/s OK
    Chunk:  30 (3840-3968)MB Speed: 287.77 GByte/s OK
    Chunk:  31 (3968-4096)MB Speed: 287.82 GByte/s OK
    Chunk:  32 (4096-4224)MB Speed: 288.09 GByte/s OK
    Chunk:  33 (4224-4352)MB Speed: 288.11 GByte/s OK
    Chunk:  34 (4352-4480)MB Speed: 288.29 GByte/s OK
    Chunk:  35 (4480-4608)MB Speed: 288.08 GByte/s OK
    Chunk:  36 (4608-4736)MB Speed: 288.37 GByte/s OK
    Chunk:  37 (4736-4864)MB Speed: 288.22 GByte/s OK
    Chunk:  38 (4864-4992)MB Speed: 288.07 GByte/s OK
    Chunk:  39 (4992-5120)MB Speed: 288.04 GByte/s OK
    Chunk:  40 (5120-5248)MB Speed: 288.20 GByte/s OK
    Chunk:  41 (5248-5376)MB Speed: 288.23 GByte/s OK
    Chunk:  42 (5376-5504)MB Speed: 287.87 GByte/s OK
    Chunk:  43 (5504-5632)MB Speed: 287.95 GByte/s OK
    Chunk:  44 (5632-5760)MB Speed: 288.58 GByte/s OK
    Chunk:  45 (5760-5888)MB Speed: 288.20 GByte/s OK
    Chunk:  46 (5888-6016)MB Speed: 287.87 GByte/s OK
    Chunk:  47 (6016-6144)MB Speed: 288.42 GByte/s OK
    Chunk:  48 (6144-6272)MB Speed: 288.42 GByte/s OK
    Chunk:  49 (6272-6400)MB Speed: 287.99 GByte/s OK
    Chunk:  50 (6400-6528)MB Speed: 288.10 GByte/s OK
    Chunk:  51 (6528-6656)MB Speed: 288.25 GByte/s OK
    Chunk:  52 (6656-6784)MB Speed: 288.70 GByte/s OK
    Chunk:  53 (6784-6912)MB Speed: 288.26 GByte/s OK
    Chunk:  54 (6912-7040)MB Speed: 287.96 GByte/s OK
    Chunk:  55 (7040-7168)MB Speed: 288.43 GByte/s OK
    Chunk:  56 (7168-7296)MB Speed: 288.18 GByte/s OK
    Chunk:  57 (7296-7424)MB Speed: 288.53 GByte/s OK
    Chunk:  58 (7424-7552)MB Speed: 5.00 GByte/s OK
    Chunk:  59 (7552-7680)MB Speed: 5.00 GByte/s OK
    Chunk:  60 (7680-7808)MB Speed: 5.00 GByte/s OK
    Chunk:  61 (7808-7936)MB Speed: 5.00 GByte/s OK
    Chunk:  62 (7936-8064)MB Speed: 4.99 GByte/s OK
    Chunk:  63 (8064-8192)MB Speed: 4.99 GByte/s OK
     
  6. Shonk

    Shonk Member

    Messages:
    11
    Likes Received:
    2
    GPU:
    Sapphire RX Vega 64
    What speed is you ram running at mine is at 1400 (5600 on my 290) and scores 216
    i wouldnt have thought going from 1400 to 1500 would jump it as high as 288

     
  7. Athlonite

    Athlonite Maha Guru

    Messages:
    1,305
    Likes Received:
    36
    GPU:
    Pulse RX5700 8GB
    Full speed ahead here for an Sapphire Pulse RX5700 8GB


    Code:
    [0] Platform name: AMD Accelerated Parallel Processing vendor:Advanced Micro Devices, Inc. version:OpenCL 2.1 AMD-APP (3075.12)[1;32m <-- selected [0m
        [0] Device Name: gfx1010[1;32m <-- selected [0m
               Type: 4 (GPU: 4, CPU: 2)
               Vendor: Advanced Micro Devices, Inc.
               Max Compute Units: 18
               Global Memory: 8573157376
               Max Clock Frequency: 1700
               Max Alloc. Memory: 7059013632
               Local Memory: 65536
               Available: 1
    allocated 8455716864 bytes 7.88 GB
    Running Bench test on:gfx1010
    Chunk:   0 (   0- 128)MB Speed: 426.72 GByte/s OK
    Chunk:   1 ( 128- 256)MB Speed: 426.63 GByte/s OK
    Chunk:   2 ( 256- 384)MB Speed: 426.67 GByte/s OK
    Chunk:   3 ( 384- 512)MB Speed: 426.67 GByte/s OK
    Chunk:   4 ( 512- 640)MB Speed: 426.76 GByte/s OK
    Chunk:   5 ( 640- 768)MB Speed: 426.99 GByte/s OK
    Chunk:   6 ( 768- 896)MB Speed: 426.60 GByte/s OK
    Chunk:   7 ( 896-1024)MB Speed: 426.83 GByte/s OK
    Chunk:   8 (1024-1152)MB Speed: 426.56 GByte/s OK
    Chunk:   9 (1152-1280)MB Speed: 426.85 GByte/s OK
    Chunk:  10 (1280-1408)MB Speed: 426.93 GByte/s OK
    Chunk:  11 (1408-1536)MB Speed: 414.79 GByte/s OK
    Chunk:  12 (1536-1664)MB Speed: 425.52 GByte/s OK
    Chunk:  13 (1664-1792)MB Speed: 426.82 GByte/s OK
    Chunk:  14 (1792-1920)MB Speed: 427.05 GByte/s OK
    Chunk:  15 (1920-2048)MB Speed: 426.89 GByte/s OK
    Chunk:  16 (2048-2176)MB Speed: 426.93 GByte/s OK
    Chunk:  17 (2176-2304)MB Speed: 426.77 GByte/s OK
    Chunk:  18 (2304-2432)MB Speed: 426.66 GByte/s OK
    Chunk:  19 (2432-2560)MB Speed: 426.74 GByte/s OK
    Chunk:  20 (2560-2688)MB Speed: 426.80 GByte/s OK
    Chunk:  21 (2688-2816)MB Speed: 426.90 GByte/s OK
    Chunk:  22 (2816-2944)MB Speed: 426.58 GByte/s OK
    Chunk:  23 (2944-3072)MB Speed: 426.96 GByte/s OK
    Chunk:  24 (3072-3200)MB Speed: 426.36 GByte/s OK
    Chunk:  25 (3200-3328)MB Speed: 426.17 GByte/s OK
    Chunk:  26 (3328-3456)MB Speed: 426.80 GByte/s OK
    Chunk:  27 (3456-3584)MB Speed: 426.92 GByte/s OK
    Chunk:  28 (3584-3712)MB Speed: 426.68 GByte/s OK
    Chunk:  29 (3712-3840)MB Speed: 426.84 GByte/s OK
    Chunk:  30 (3840-3968)MB Speed: 427.08 GByte/s OK
    Chunk:  31 (3968-4096)MB Speed: 426.81 GByte/s OK
    Chunk:  32 (4096-4224)MB Speed: 426.90 GByte/s OK
    Chunk:  33 (4224-4352)MB Speed: 426.82 GByte/s OK
    Chunk:  34 (4352-4480)MB Speed: 426.81 GByte/s OK
    Chunk:  35 (4480-4608)MB Speed: 427.07 GByte/s OK
    Chunk:  36 (4608-4736)MB Speed: 426.91 GByte/s OK
    Chunk:  37 (4736-4864)MB Speed: 426.78 GByte/s OK
    Chunk:  38 (4864-4992)MB Speed: 426.86 GByte/s OK
    Chunk:  39 (4992-5120)MB Speed: 427.09 GByte/s OK
    Chunk:  40 (5120-5248)MB Speed: 426.70 GByte/s OK
    Chunk:  41 (5248-5376)MB Speed: 426.70 GByte/s OK
    Chunk:  42 (5376-5504)MB Speed: 426.83 GByte/s OK
    Chunk:  43 (5504-5632)MB Speed: 427.02 GByte/s OK
    Chunk:  44 (5632-5760)MB Speed: 426.79 GByte/s OK
    Chunk:  45 (5760-5888)MB Speed: 426.77 GByte/s OK
    Chunk:  46 (5888-6016)MB Speed: 426.96 GByte/s OK
    Chunk:  47 (6016-6144)MB Speed: 426.65 GByte/s OK
    Chunk:  48 (6144-6272)MB Speed: 426.44 GByte/s OK
    Chunk:  49 (6272-6400)MB Speed: 426.65 GByte/s OK
    Chunk:  50 (6400-6528)MB Speed: 427.12 GByte/s OK
    Chunk:  51 (6528-6656)MB Speed: 426.77 GByte/s OK
    Chunk:  52 (6656-6784)MB Speed: 426.99 GByte/s OK
    Chunk:  53 (6784-6912)MB Speed: 427.08 GByte/s OK
    Chunk:  54 (6912-7040)MB Speed: 426.87 GByte/s OK
    Chunk:  55 (7040-7168)MB Speed: 426.59 GByte/s OK
    Chunk:  56 (7168-7296)MB Speed: 426.69 GByte/s OK
    Chunk:  57 (7296-7424)MB Speed: 426.58 GByte/s OK
    Chunk:  58 (7424-7552)MB Speed: 426.98 GByte/s OK
    Chunk:  59 (7552-7680)MB Speed: 426.83 GByte/s OK
    Chunk:  60 (7680-7808)MB Speed: 426.79 GByte/s OK
    Chunk:  61 (7808-7936)MB Speed: 426.75 GByte/s OK
    Chunk:  62 (7936-8064)MB Speed: 426.85 GByte/s OK
     
  8. Max

    Max Member

    Messages:
    22
    Likes Received:
    7
    GPU:
    R9 390X
    mine is at 1500, stock bios with no tweaks
     

    Attached Files:

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      284.3 KB
      Views:
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    • 2.gif
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      File size:
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      Views:
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    Last edited: Jul 9, 2020
  9. Strange Times

    Strange Times Master Guru

    Messages:
    280
    Likes Received:
    83
    GPU:
    RX 580 UV
    gpu z 280gbs
    this bench 220gbs
     
  10. Shonk

    Shonk Member

    Messages:
    11
    Likes Received:
    2
    GPU:
    Sapphire RX Vega 64
    Are you running an old version of windows or something im running 2004 with 20.7.1

    I turned off the second monitor and it went from 216 to 219
    I set the resolution to 640x480 and it went to 223
    i should be getting around 268.8 going by your score

    this app seems a bit fishy i just manually set the ram to 1500 in amd control panel
    and it was still 216 gpu-z showed it was at 1500

    smells to me as if its using some sort of pre configured range to use

    either that or newer versions of windows do something different

    what cpu do you have mine is a 4.1ghz sc 3.8ghz ac ivy bridge Xeon E3 1290 v2 with 32gb of 9-9-9 1600 ddr3 (Faster i7 3770k)
    i presume my cpu and ram is faster than yours as mine is getting nearly twice as fast as yours on the last 1gb
     
    Last edited: Jul 12, 2020

  11. Fox2232

    Fox2232 Ancient Guru

    Messages:
    10,889
    Likes Received:
    2,807
    GPU:
    5700XT+AW@240Hz
    GPUz shows theoretical.
     
  12. Espionage724

    Espionage724 Member

    Messages:
    19
    Likes Received:
    4
    GPU:
    Radeon RX 580 8G
    Here's mine from a RX 580:

    Code:
    [0] Platform name: AMD Accelerated Parallel Processing vendor:Advanced Micro Devices, Inc. version:OpenCL 2.1 AMD-APP (3110.7)←[1;32m <-- selected ←[0m
            [0] Device Name: Ellesmere←[1;32m <-- selected ←[0m
                   Type: 4 (GPU: 4, CPU: 2)
                   Vendor: Advanced Micro Devices, Inc.
                   Max Compute Units: 36
                   Global Memory: 8589934592
                   Max Clock Frequency: 1366
                   Max Alloc. Memory: 7073274265
                   Local Memory: 32768
                   Available: 1
    allocated 8589934592 bytes 8.00 GB
    Running Bench test on:Ellesmere
    Chunk:   0 (   0- 128)MB Speed: 192.39 GByte/s OK
    Chunk:   1 ( 128- 256)MB Speed: 192.36 GByte/s OK
    Chunk:   2 ( 256- 384)MB Speed: 192.69 GByte/s OK
    Chunk:   3 ( 384- 512)MB Speed: 192.20 GByte/s OK
    Chunk:   4 ( 512- 640)MB Speed: 192.60 GByte/s OK
    Chunk:   5 ( 640- 768)MB Speed: 192.95 GByte/s OK
    Chunk:   6 ( 768- 896)MB Speed: 192.65 GByte/s OK
    Chunk:   7 ( 896-1024)MB Speed: 192.68 GByte/s OK
    Chunk:   8 (1024-1152)MB Speed: 192.28 GByte/s OK
    Chunk:   9 (1152-1280)MB Speed: 192.82 GByte/s OK
    Chunk:  10 (1280-1408)MB Speed: 192.53 GByte/s OK
    Chunk:  11 (1408-1536)MB Speed: 192.55 GByte/s OK
    Chunk:  12 (1536-1664)MB Speed: 192.13 GByte/s OK
    Chunk:  13 (1664-1792)MB Speed: 192.15 GByte/s OK
    Chunk:  14 (1792-1920)MB Speed: 191.75 GByte/s OK
    Chunk:  15 (1920-2048)MB Speed: 191.71 GByte/s OK
    Chunk:  16 (2048-2176)MB Speed: 191.91 GByte/s OK
    Chunk:  17 (2176-2304)MB Speed: 191.64 GByte/s OK
    Chunk:  18 (2304-2432)MB Speed: 192.05 GByte/s OK
    Chunk:  19 (2432-2560)MB Speed: 192.00 GByte/s OK
    Chunk:  20 (2560-2688)MB Speed: 191.58 GByte/s OK
    Chunk:  21 (2688-2816)MB Speed: 191.54 GByte/s OK
    Chunk:  22 (2816-2944)MB Speed: 192.00 GByte/s OK
    Chunk:  23 (2944-3072)MB Speed: 192.02 GByte/s OK
    Chunk:  24 (3072-3200)MB Speed: 192.33 GByte/s OK
    Chunk:  25 (3200-3328)MB Speed: 191.50 GByte/s OK
    Chunk:  26 (3328-3456)MB Speed: 191.93 GByte/s OK
    Chunk:  27 (3456-3584)MB Speed: 192.10 GByte/s OK
    Chunk:  28 (3584-3712)MB Speed: 191.80 GByte/s OK
    Chunk:  29 (3712-3840)MB Speed: 191.70 GByte/s OK
    Chunk:  30 (3840-3968)MB Speed: 191.91 GByte/s OK
    Chunk:  31 (3968-4096)MB Speed: 192.56 GByte/s OK
    Chunk:  32 (4096-4224)MB Speed: 192.46 GByte/s OK
    Chunk:  33 (4224-4352)MB Speed: 192.23 GByte/s OK
    Chunk:  34 (4352-4480)MB Speed: 191.30 GByte/s OK
    Chunk:  35 (4480-4608)MB Speed: 191.99 GByte/s OK
    Chunk:  36 (4608-4736)MB Speed: 191.58 GByte/s OK
    Chunk:  37 (4736-4864)MB Speed: 192.02 GByte/s OK
    Chunk:  38 (4864-4992)MB Speed: 192.15 GByte/s OK
    Chunk:  39 (4992-5120)MB Speed: 191.63 GByte/s OK
    Chunk:  40 (5120-5248)MB Speed: 192.18 GByte/s OK
    Chunk:  41 (5248-5376)MB Speed: 192.00 GByte/s OK
    Chunk:  42 (5376-5504)MB Speed: 191.46 GByte/s OK
    Chunk:  43 (5504-5632)MB Speed: 192.53 GByte/s OK
    Chunk:  44 (5632-5760)MB Speed: 192.04 GByte/s OK
    Chunk:  45 (5760-5888)MB Speed: 191.86 GByte/s OK
    Chunk:  46 (5888-6016)MB Speed: 191.54 GByte/s OK
    Chunk:  47 (6016-6144)MB Speed: 192.05 GByte/s OK
    Chunk:  48 (6144-6272)MB Speed: 191.76 GByte/s OK
    Chunk:  49 (6272-6400)MB Speed: 9.34 GByte/s OK
    Chunk:  50 (6400-6528)MB Speed: 9.40 GByte/s OK
    Chunk:  51 (6528-6656)MB Speed: 9.16 GByte/s OK
    Chunk:  52 (6656-6784)MB Speed: 192.28 GByte/s OK
    Chunk:  53 (6784-6912)MB Speed: 192.61 GByte/s OK
    Chunk:  54 (6912-7040)MB Speed: 9.44 GByte/s OK
    Chunk:  55 (7040-7168)MB Speed: 9.30 GByte/s OK
    Chunk:  56 (7168-7296)MB Speed: 9.39 GByte/s OK
    Chunk:  57 (7296-7424)MB Speed: 9.39 GByte/s OK
    Chunk:  58 (7424-7552)MB Speed: 9.54 GByte/s OK
    Chunk:  59 (7552-7680)MB Speed: 9.43 GByte/s OK
    Chunk:  60 (7680-7808)MB Speed: 9.45 GByte/s OK
    Chunk:  61 (7808-7936)MB Speed: 9.43 GByte/s OK
    Chunk:  62 (7936-8064)MB Speed: 9.45 GByte/s OK
    Chunk:  63 (8064-8192)MB Speed: 9.42 GByte/s OK
     
  13. user1

    user1 Ancient Guru

    Messages:
    1,608
    Likes Received:
    546
    GPU:
    hd 6870
    no weirdness here on linux, unlike windows.
    Code:
    [1] Platform name: AMD Accelerated Parallel Processing vendor:Advanced Micro Devices, Inc. version:OpenCL 2.1 AMD-APP (3143.9) <-- selected
            [0] Device Name: Baffin <-- selected
                   Type: 4 (GPU: 4, CPU: 2)
                   Vendor: Advanced Micro Devices, Inc.
                   Max Compute Units: 16
                   Global Memory: 4231847936
                   Max Clock Frequency: 1180
                   Max Alloc. Memory: 3385131827
                   Local Memory: 32768
                   Available: 1
    allocated 4160749568 bytes 3.88 GB
    Running Bench test on:Baffin
    Chunk:   0 (   0- 128)MB Speed: 82.81 GByte/s OK
    Chunk:   1 ( 128- 256)MB Speed: 85.52 GByte/s OK
    Chunk:   2 ( 256- 384)MB Speed: 85.56 GByte/s OK
    Chunk:   3 ( 384- 512)MB Speed: 88.20 GByte/s OK
    Chunk:   4 ( 512- 640)MB Speed: 85.47 GByte/s OK
    Chunk:   5 ( 640- 768)MB Speed: 85.60 GByte/s OK
    Chunk:   6 ( 768- 896)MB Speed: 88.21 GByte/s OK
    Chunk:   7 ( 896-1024)MB Speed: 85.52 GByte/s OK
    Chunk:   8 (1024-1152)MB Speed: 85.46 GByte/s OK
    Chunk:   9 (1152-1280)MB Speed: 85.51 GByte/s OK
    Chunk:  10 (1280-1408)MB Speed: 85.49 GByte/s OK
    Chunk:  11 (1408-1536)MB Speed: 85.27 GByte/s OK
    Chunk:  12 (1536-1664)MB Speed: 85.44 GByte/s OK
    Chunk:  13 (1664-1792)MB Speed: 85.41 GByte/s OK
    Chunk:  14 (1792-1920)MB Speed: 85.48 GByte/s OK
    Chunk:  15 (1920-2048)MB Speed: 85.44 GByte/s OK
    Chunk:  16 (2048-2176)MB Speed: 85.76 GByte/s OK
    Chunk:  17 (2176-2304)MB Speed: 88.20 GByte/s OK
    Chunk:  18 (2304-2432)MB Speed: 88.21 GByte/s OK
    Chunk:  19 (2432-2560)MB Speed: 88.22 GByte/s OK
    Chunk:  20 (2560-2688)MB Speed: 85.45 GByte/s OK
    Chunk:  21 (2688-2816)MB Speed: 85.46 GByte/s OK
    Chunk:  22 (2816-2944)MB Speed: 85.43 GByte/s OK
    Chunk:  23 (2944-3072)MB Speed: 85.47 GByte/s OK
    Chunk:  24 (3072-3200)MB Speed: 85.47 GByte/s OK
    Chunk:  25 (3200-3328)MB Speed: 85.44 GByte/s OK
    Chunk:  26 (3328-3456)MB Speed: 85.49 GByte/s OK
    Chunk:  27 (3456-3584)MB Speed: 85.45 GByte/s OK
    Chunk:  28 (3584-3712)MB Speed: 85.46 GByte/s OK
    Chunk:  29 (3712-3840)MB Speed: 85.45 GByte/s OK
    Chunk:  30 (3840-3968)MB Speed: 85.30 GByte/s OK
     
  14. Espionage724

    Espionage724 Member

    Messages:
    19
    Likes Received:
    4
    GPU:
    Radeon RX 580 8G
    The last chunks seem to go down in speed regardless of whether the GPU is being used at all.

    I have two RX 580s. Crossfire is disabled in AMD settings. The second GPU doesn't have any displays plugged into it, and wasn't being accessed by any programs or sensors at the time of running.

    Primary GPU:

    Code:
    [0] Platform name: AMD Accelerated Parallel Processing vendor:Advanced Micro Devices, Inc. version:OpenCL 2.1 AMD-APP (3110.7)←[1;32m <-- selected ←[0m
            [0] Device Name: Ellesmere←[1;32m <-- selected ←[0m
                   Type: 4 (GPU: 4, CPU: 2)
                   Vendor: Advanced Micro Devices, Inc.
                   Max Compute Units: 36
                   Global Memory: 8589934592
                   Max Clock Frequency: 1366
                   Max Alloc. Memory: 7073274265
                   Local Memory: 32768
                   Available: 1
            [1] Device Name: Ellesmere
                   Type: 4 (GPU: 4, CPU: 2)
                   Vendor: Advanced Micro Devices, Inc.
                   Max Compute Units: 36
                   Global Memory: 8589934592
                   Max Clock Frequency: 1366
                   Max Alloc. Memory: 7073274265
                   Local Memory: 32768
                   Available: 1
    allocated 8589934592 bytes 8.00 GB
    Running Bench test on:Ellesmere
    Chunk:   0 (   0- 128)MB Speed: 191.16 GByte/s OK
    Chunk:   1 ( 128- 256)MB Speed: 191.69 GByte/s OK
    Chunk:   2 ( 256- 384)MB Speed: 191.32 GByte/s OK
    Chunk:   3 ( 384- 512)MB Speed: 192.27 GByte/s OK
    Chunk:   4 ( 512- 640)MB Speed: 191.91 GByte/s OK
    Chunk:   5 ( 640- 768)MB Speed: 192.37 GByte/s OK
    Chunk:   6 ( 768- 896)MB Speed: 191.46 GByte/s OK
    Chunk:   7 ( 896-1024)MB Speed: 191.85 GByte/s OK
    Chunk:   8 (1024-1152)MB Speed: 192.10 GByte/s OK
    Chunk:   9 (1152-1280)MB Speed: 192.06 GByte/s OK
    Chunk:  10 (1280-1408)MB Speed: 192.52 GByte/s OK
    Chunk:  11 (1408-1536)MB Speed: 192.01 GByte/s OK
    Chunk:  12 (1536-1664)MB Speed: 191.67 GByte/s OK
    Chunk:  13 (1664-1792)MB Speed: 192.15 GByte/s OK
    Chunk:  14 (1792-1920)MB Speed: 192.43 GByte/s OK
    Chunk:  15 (1920-2048)MB Speed: 191.50 GByte/s OK
    Chunk:  16 (2048-2176)MB Speed: 192.14 GByte/s OK
    Chunk:  17 (2176-2304)MB Speed: 191.90 GByte/s OK
    Chunk:  18 (2304-2432)MB Speed: 191.70 GByte/s OK
    Chunk:  19 (2432-2560)MB Speed: 191.74 GByte/s OK
    Chunk:  20 (2560-2688)MB Speed: 191.73 GByte/s OK
    Chunk:  21 (2688-2816)MB Speed: 192.48 GByte/s OK
    Chunk:  22 (2816-2944)MB Speed: 191.70 GByte/s OK
    Chunk:  23 (2944-3072)MB Speed: 191.88 GByte/s OK
    Chunk:  24 (3072-3200)MB Speed: 191.43 GByte/s OK
    Chunk:  25 (3200-3328)MB Speed: 192.14 GByte/s OK
    Chunk:  26 (3328-3456)MB Speed: 191.24 GByte/s OK
    Chunk:  27 (3456-3584)MB Speed: 191.92 GByte/s OK
    Chunk:  28 (3584-3712)MB Speed: 191.64 GByte/s OK
    Chunk:  29 (3712-3840)MB Speed: 191.37 GByte/s OK
    Chunk:  30 (3840-3968)MB Speed: 192.00 GByte/s OK
    Chunk:  31 (3968-4096)MB Speed: 191.37 GByte/s OK
    Chunk:  32 (4096-4224)MB Speed: 191.66 GByte/s OK
    Chunk:  33 (4224-4352)MB Speed: 191.78 GByte/s OK
    Chunk:  34 (4352-4480)MB Speed: 191.53 GByte/s OK
    Chunk:  35 (4480-4608)MB Speed: 191.22 GByte/s OK
    Chunk:  36 (4608-4736)MB Speed: 191.85 GByte/s OK
    Chunk:  37 (4736-4864)MB Speed: 191.36 GByte/s OK
    Chunk:  38 (4864-4992)MB Speed: 191.77 GByte/s OK
    Chunk:  39 (4992-5120)MB Speed: 192.17 GByte/s OK
    Chunk:  40 (5120-5248)MB Speed: 192.02 GByte/s OK
    Chunk:  41 (5248-5376)MB Speed: 191.77 GByte/s OK
    Chunk:  42 (5376-5504)MB Speed: 191.20 GByte/s OK
    Chunk:  43 (5504-5632)MB Speed: 191.74 GByte/s OK
    Chunk:  44 (5632-5760)MB Speed: 191.64 GByte/s OK
    Chunk:  45 (5760-5888)MB Speed: 192.20 GByte/s OK
    Chunk:  46 (5888-6016)MB Speed: 192.21 GByte/s OK
    Chunk:  47 (6016-6144)MB Speed: 191.57 GByte/s OK
    Chunk:  48 (6144-6272)MB Speed: 192.24 GByte/s OK
    Chunk:  49 (6272-6400)MB Speed: 191.52 GByte/s OK
    Chunk:  50 (6400-6528)MB Speed: 192.18 GByte/s OK
    Chunk:  51 (6528-6656)MB Speed: 192.35 GByte/s OK
    Chunk:  52 (6656-6784)MB Speed: 192.04 GByte/s OK
    Chunk:  53 (6784-6912)MB Speed: 191.67 GByte/s OK
    Chunk:  54 (6912-7040)MB Speed: 191.71 GByte/s OK
    Chunk:  55 (7040-7168)MB Speed: 191.61 GByte/s OK
    Chunk:  56 (7168-7296)MB Speed: 192.08 GByte/s OK
    Chunk:  57 (7296-7424)MB Speed: 191.70 GByte/s OK
    Chunk:  58 (7424-7552)MB Speed: 192.50 GByte/s OK
    Chunk:  59 (7552-7680)MB Speed: 191.79 GByte/s OK
    Chunk:  60 (7680-7808)MB Speed: 4.79 GByte/s OK
    Chunk:  61 (7808-7936)MB Speed: 4.62 GByte/s OK
    Chunk:  62 (7936-8064)MB Speed: 4.83 GByte/s OK
    Chunk:  63 (8064-8192)MB Speed: 4.62 GByte/s OK
    Second GPU:

    Code:
    [0] Platform name: AMD Accelerated Parallel Processing vendor:Advanced Micro Devices, Inc. version:OpenCL 2.1 AMD-APP (3110.7)←[1;32m <-- selected ←[0m
            [0] Device Name: Ellesmere
                   Type: 4 (GPU: 4, CPU: 2)
                   Vendor: Advanced Micro Devices, Inc.
                   Max Compute Units: 36
                   Global Memory: 8589934592
                   Max Clock Frequency: 1366
                   Max Alloc. Memory: 7073274265
                   Local Memory: 32768
                   Available: 1
            [1] Device Name: Ellesmere←[1;32m <-- selected ←[0m
                   Type: 4 (GPU: 4, CPU: 2)
                   Vendor: Advanced Micro Devices, Inc.
                   Max Compute Units: 36
                   Global Memory: 8589934592
                   Max Clock Frequency: 1366
                   Max Alloc. Memory: 7073274265
                   Local Memory: 32768
                   Available: 1
    allocated 8589934592 bytes 8.00 GB
    Running Bench test on:Ellesmere
    Chunk:   0 (   0- 128)MB Speed: 206.10 GByte/s OK
    Chunk:   1 ( 128- 256)MB Speed: 207.32 GByte/s OK
    Chunk:   2 ( 256- 384)MB Speed: 206.70 GByte/s OK
    Chunk:   3 ( 384- 512)MB Speed: 207.60 GByte/s OK
    Chunk:   4 ( 512- 640)MB Speed: 207.55 GByte/s OK
    Chunk:   5 ( 640- 768)MB Speed: 207.09 GByte/s OK
    Chunk:   6 ( 768- 896)MB Speed: 205.64 GByte/s OK
    Chunk:   7 ( 896-1024)MB Speed: 206.35 GByte/s OK
    Chunk:   8 (1024-1152)MB Speed: 206.55 GByte/s OK
    Chunk:   9 (1152-1280)MB Speed: 207.11 GByte/s OK
    Chunk:  10 (1280-1408)MB Speed: 207.88 GByte/s OK
    Chunk:  11 (1408-1536)MB Speed: 207.17 GByte/s OK
    Chunk:  12 (1536-1664)MB Speed: 206.82 GByte/s OK
    Chunk:  13 (1664-1792)MB Speed: 206.82 GByte/s OK
    Chunk:  14 (1792-1920)MB Speed: 207.22 GByte/s OK
    Chunk:  15 (1920-2048)MB Speed: 206.19 GByte/s OK
    Chunk:  16 (2048-2176)MB Speed: 206.71 GByte/s OK
    Chunk:  17 (2176-2304)MB Speed: 207.05 GByte/s OK
    Chunk:  18 (2304-2432)MB Speed: 205.75 GByte/s OK
    Chunk:  19 (2432-2560)MB Speed: 207.05 GByte/s OK
    Chunk:  20 (2560-2688)MB Speed: 206.45 GByte/s OK
    Chunk:  21 (2688-2816)MB Speed: 207.25 GByte/s OK
    Chunk:  22 (2816-2944)MB Speed: 206.28 GByte/s OK
    Chunk:  23 (2944-3072)MB Speed: 206.75 GByte/s OK
    Chunk:  24 (3072-3200)MB Speed: 206.27 GByte/s OK
    Chunk:  25 (3200-3328)MB Speed: 207.67 GByte/s OK
    Chunk:  26 (3328-3456)MB Speed: 205.75 GByte/s OK
    Chunk:  27 (3456-3584)MB Speed: 207.03 GByte/s OK
    Chunk:  28 (3584-3712)MB Speed: 206.82 GByte/s OK
    Chunk:  29 (3712-3840)MB Speed: 206.67 GByte/s OK
    Chunk:  30 (3840-3968)MB Speed: 206.99 GByte/s OK
    Chunk:  31 (3968-4096)MB Speed: 206.71 GByte/s OK
    Chunk:  32 (4096-4224)MB Speed: 206.49 GByte/s OK
    Chunk:  33 (4224-4352)MB Speed: 207.16 GByte/s OK
    Chunk:  34 (4352-4480)MB Speed: 206.85 GByte/s OK
    Chunk:  35 (4480-4608)MB Speed: 205.81 GByte/s OK
    Chunk:  36 (4608-4736)MB Speed: 206.40 GByte/s OK
    Chunk:  37 (4736-4864)MB Speed: 206.32 GByte/s OK
    Chunk:  38 (4864-4992)MB Speed: 207.08 GByte/s OK
    Chunk:  39 (4992-5120)MB Speed: 207.91 GByte/s OK
    Chunk:  40 (5120-5248)MB Speed: 206.28 GByte/s OK
    Chunk:  41 (5248-5376)MB Speed: 206.51 GByte/s OK
    Chunk:  42 (5376-5504)MB Speed: 206.06 GByte/s OK
    Chunk:  43 (5504-5632)MB Speed: 206.56 GByte/s OK
    Chunk:  44 (5632-5760)MB Speed: 206.89 GByte/s OK
    Chunk:  45 (5760-5888)MB Speed: 207.10 GByte/s OK
    Chunk:  46 (5888-6016)MB Speed: 207.74 GByte/s OK
    Chunk:  47 (6016-6144)MB Speed: 206.09 GByte/s OK
    Chunk:  48 (6144-6272)MB Speed: 206.95 GByte/s OK
    Chunk:  49 (6272-6400)MB Speed: 206.41 GByte/s OK
    Chunk:  50 (6400-6528)MB Speed: 206.77 GByte/s OK
    Chunk:  51 (6528-6656)MB Speed: 207.31 GByte/s OK
    Chunk:  52 (6656-6784)MB Speed: 207.26 GByte/s OK
    Chunk:  53 (6784-6912)MB Speed: 206.55 GByte/s OK
    Chunk:  54 (6912-7040)MB Speed: 206.16 GByte/s OK
    Chunk:  55 (7040-7168)MB Speed: 206.49 GByte/s OK
    Chunk:  56 (7168-7296)MB Speed: 206.80 GByte/s OK
    Chunk:  57 (7296-7424)MB Speed: 207.26 GByte/s OK
    Chunk:  58 (7424-7552)MB Speed: 206.84 GByte/s OK
    Chunk:  59 (7552-7680)MB Speed: 206.18 GByte/s OK
    Chunk:  60 (7680-7808)MB Speed: 206.57 GByte/s OK
    Chunk:  61 (7808-7936)MB Speed: 4.94 GByte/s OK
    Chunk:  62 (7936-8064)MB Speed: 4.84 GByte/s OK
    Chunk:  63 (8064-8192)MB Speed: 4.52 GByte/s OK
     
  15. Astyanax

    Astyanax Ancient Guru

    Messages:
    8,029
    Likes Received:
    2,672
    GPU:
    GTX 1080ti
    user1 and Espionage724 like this.

  16. ZioPao

    ZioPao New Member

    Messages:
    1
    Likes Received:
    0
    GPU:
    RX 590
    I'm having the same exact results with a RX 590. From chunk 50 onward it gets a lot slower. Also, I noticed some strange beheaviours when games use more than 6 GB of VRAM.
     

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