GPU Metal Bench/ PCIe /VRAM Speed Test

  • @NEXTSTEP:

    Die VRAM Speed & PCIe Transfrespeed ist für die Karte sehr niedrig.

    2.5 zeigt doppelten VRAM Speed bei der RX6800

    habe es nach einem Reboot mehrfach laufen lassen, VRAM Speed ist bei jedem Lauf völlig anders, mal 5, 8, 9, 11, 20, 22 GB/s



    M3 Max ist unverändert


    Edited once, last by khe91 ().

  • Hi, was bei dir VRAM und PCIe Speed angeht stimmt da was nicht!
    Egal ob 10 oder 20 GB/s bei VrAm ist das viiiel zu wenig - Faktor 10 mindestens.

    Dito bei der PCIe Performane . das ist nicht PCIe 4 sondern nur PCIe 3 Speed, was eigentlich nur ältere Grafikkarten Karten und/oder recht alte Mainbords liefern.

  • Dito bei der PCIe Performane . das ist nicht PCIe 4 sondern nur PCIe 3 Speed

    Mac Pro 2019 hat kein PCIe 4. Intel C621 Chipset, 64 PCIe 3 Lanes.


  • It seems fine fr my spec? isn't it?

    Thanks

    ASUS ROG x670E Hero - AMD Ryzen 7950x - DDR5 6400 Ghz Corsair Vengeance 192 Gb (48 Gb x4)- ENERMAX LIQMAXFLO 360 mm

    Sabrent Rocket 1 TB Windows 11 - KINGSTON SKC3000 2 Tb mcOS SOnoma ((latest beta) - Opencore - KINGSTON SKC3000 2 Tb macOS Ventura (latest) - Opencore

    AMD Radeon RX 6950 Xt 16 Gb

    Mac Pro 4.1 (early 2009)--->5.1 - 2x x5680 3,33Ghz Xeon- 96 Gb DDR3 1333 -Power Color Rx 6600 8 Gb (EFI Mac)- Nvme Samsung 960 pro 1 Tb - Monterey 12.7.3

  • Yep. great values ... 15,4 TFlops.


    @khe91, Ok i didnt know you use the RX 6800Xt in the MacPro 2019 with limited PCie Speed.

    Nbody Metal doesnt use much VRAM so the Gigaplops arent lower.


    Can you try the Neat Videobench (also great for GPU only bench)?

    perhaps we see here also some gpu bottleneck (PCI/VRAM) or not?

    1. DL https://www.neatvideo.com/download/neatbench

    2. unzip the bench somewhere - i did that on the desktop

    3. run neatbench5 with any argument gpu (Terminal app)

    4 run neatbench5 with arguments 4000x3000 gpu

    compare Faktor gpu only fps of default and 4000x3000 setting - 4000x3000 used much much more VRAM up to 3 GB.


    Here my two runs on the RX 5600XT:

    andreas$ /Users/andreas/Downloads/NeatBench5_OSX_UB/NeatBench5 gpu

    Neat Bench (Neat Image 9.1.0, Neat Video 5.5.5) MacOS x64

    ...

    Metal initialized successfully.

    Checking Metal GPU 1:

    GPU device name is: AMD Radeon RX 5600 XT

    6128 MB total

    Check passed - will attempt to use the device

    Neat Video benchmark:

    Frame Size: 1920x1080 progressive

    Bitdepth: 32 bits per channel

    ....

    CPU Model: 12th Gen Intel(R) Core(TM) i5-12400F

    GPU 1: AMD Radeon RX 5600 XT (Metal): 6128 MB total, using up to 100%

    GPU only (AMD Radeon RX 5600 XT): 25.9 frames/sec

    ...Press Enter to exit


    Second run with 4000x3000 gpu ( uses much more VRAM - 3 GB+ - then default)

    andreas$ /Users/andreas/Downloads/NeatBench5_OSX_UB/NeatBench5 4000x3000 gpu

    Neat Bench (Neat Image 9.1.0, Neat Video 5.5.5) MacOS x64

    ...

    Metal initialized successfully.

    Checking Metal GPU 1:

    GPU device name is: AMD Radeon RX 5600 XT

    6128 MB total

    Check passed - will attempt to use the device

    Neat Video benchmark:

    Frame Size: 4000x3000 progressive

    Bitdepth: 32 bits per channel

    ....

    CPU Model: 12th Gen Intel(R) Core(TM) i5-12400F

    GPU 1: AMD Radeon RX 5600 XT (Metal): 6128 MB total, using up to 100%

    GPU only (AMD Radeon RX 5600 XT): 5.25 frames/sec

    ...Press Enter to exit


    My factor default / 4000x3000= 26fps/5.3 fps = 4,9 times slower using 4000x3000 than default 1920*1080

    Because Size Faktor ist (4000x3000( / (1920*1080 default) = 5,8. Lower factor 4,9 seems to be efficient - fast GPUs can have even lower slowdown factor = less slowdown than 5.8 times bigger GPU task = faster gpu system


    Would be also interesting to see some Apple Mx faktors, FPS vaules here :) The neatvideo bench is UB (Intel/Apple)

    Apples CPU/GPU system has much better VRAM & PCie Transferspeeds than our PCie 4 Intel systems .. other Slowness Faktor?

  • Meine 580ger im MacPro 2012


    Edit: Und meine Radeon VII im Hacki

  • mitchde it seems no support for 6950 xt

    ASUS ROG x670E Hero - AMD Ryzen 7950x - DDR5 6400 Ghz Corsair Vengeance 192 Gb (48 Gb x4)- ENERMAX LIQMAXFLO 360 mm

    Sabrent Rocket 1 TB Windows 11 - KINGSTON SKC3000 2 Tb mcOS SOnoma ((latest beta) - Opencore - KINGSTON SKC3000 2 Tb macOS Ventura (latest) - Opencore

    AMD Radeon RX 6950 Xt 16 Gb

    Mac Pro 4.1 (early 2009)--->5.1 - 2x x5680 3,33Ghz Xeon- 96 Gb DDR3 1333 -Power Color Rx 6600 8 Gb (EFI Mac)- Nvme Samsung 960 pro 1 Tb - Monterey 12.7.3

  • Hier die RX 6750 XT Werte (6700 + 6750 funktionieren mit NootRX.kext statt WEG)

    Nicht meine, von einem anderen Forum ;)


  • mitchde

    Changed the title of the thread from “GPU speed Topaz Video Enhance AI - und GPU PCIe /VRAM Speed Test” to “GPU Metal Bench/ PCIe /VRAM Speed Test”.