1.    20 Mar 2016 #1
    Join Date : Mar 2016
    Posts : 2
    Windows 10

    Window 10 Locks Up with Crossfire 7850s

    So my computer locks up in a few games with crossfire enabled. Witcher 3 for example locks up my system almost instantly when I set it to fullscreen(which enables crossfire). Skyrim will lock up my system after a couple minutes of gameplay. Fallout 4 instantly locks up my system at the load screen. I do not believe it is a power supply issue, because crossfire works totally fine with Furmark and I tested out the cards by themselves without the crossfire bridge using a gpu bitcoin miner program. I have tried 16.3 drivers, 16.2.1 drivers, 16.1.1 drivers, 15.12 drivers. I've used DDU between them as well. I have stress tested both cards individually. There are no BSODs or DMP files created. Nothing shows in event viewer except kernel power, most likely because I hold down the power button to restart my computer. If it makes any difference, the card in slot 1 is a Sapphire 100355-1GOCL, 1GB GDDR5(Elpida) slot 2 has a XFX FX-785A-CDFC, 2GB GDDR5(Hynix).

    Sapphire 1GB. Slot 1 PCIEx16@x16
    Ran witcher 3 for about 5 minutes, everything was fine. 30-42 fps.
    Ran furmark for 5 minutes with 8x msaa and xtreme burn in, no issues. Fps min 4, max 8, avg 6.
    Ran skyrim for 5 minutes, all good. Fps 54-60
    Ran fallout 4 for 5 minutes, no issues. 28-66 depending on the area.
    Ran OCCT GPU test for 5 minutes with error checking enabled, test stopped once. Completed the second time. 70-73 fps No errors.
    Ran Evga OC Scanner X with Furry E GPU memory burner 1024MB, with artifact scanner enabled and 8x MSAA for 5 minutes, no artifacts.
    All of these were ran in fullscreen mode.

    XFX 2GB. Slot 2 PCIEx16@x4
    Witcher 3, 5 minutes, no issues. Fps 30-41
    Furmark xtreme, 8x MSAA, 5 minutes, stuttering a little compared to the other card. Fps min 2, max 6, avg 4.
    Skyrim, 5 minutes, no issues. Fps 52-60

    Fallout 4, 5 minutes, slow texture pop in at first, but everything loaded in shortly after. Not sure if this is a gpu problem. Fallout loaded faster than on the Sapphire run. Fps 25-65 depending on area.
    OCCT GPU test, error checking enabled, j5 minutes. Test stopped twice 6 seconds in both times. Completed the third time 60-65 fps on the first two, 54 fps constant the third time. No errors.
    Evga OC Scanner X Furry E 2048 MB memory test, 5 minutes, no artifacts found. I noticed one thing though, it was only using 87% of the card compared to 96% on the sapphire card. Could this be because it's on the pcie x16 slot that's only x4?
    All in fullscreen mode.

    I've found something odd, only DirectX games lock my system up. OpenGL programs and games do not lock me up at all with crossfire enabled. What gives? I've done a full Windows re-installation and I still have problems.
    Last edited by GhostOfDawn; 27 Mar 2016 at 19:44.
      My System SpecsSystem Spec


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