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Thread: Z97X-UD5H / 4790K / Xfire 7950's - pc shuts down when running Fire Strike




  1. #1
    boondocks's Avatar
    boondocks is offline Senior Member
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    Default [solved]Z97X-UD5H / 4790K / Xfire 7950's - pc shuts down when running Fire Strike

    Like the title says, the pc shuts down when running gpu intensive loads such as 3DMark Fire Strike. (Xfire enabled)
    I have pulled the 2x7950's out and put them on my Z87X-UD5H rig and they run just fine in Xfire, including benching/overclocking; put them back on the Z97X-UD5H rig and Fire Strike will shut down the pc almost every time like throwing the power switch.

    Also, after flashing the BIOS, the pc will not reboot but will shut down. The psu has to be turned off to de-energize the motherboard first before the pc can be restarted. Does the same thing when the pc shuts down while benching Fire Strike.

    Have already contacted Gigabyte support, but I thought I would throw this out there in case anyone else has any ideas. It's looking like the board is at fault, but I won't be able to RMA until the end of the month.

    Things I've tried;

    Every BIOS from F7 to F9e
    cpu overclocked/not overclocked
    Plugging/unplugging the ATX4P connector (normally is plugged in adding extra power to the pcie slots)
    Minimal Windows 7 Pro install from backups
    Pulled the battery for a half hour
    Several different AMD driver versions (can't hurt, right?)
    Individually bench each card with Xfire disabled with no problems, including overclocking them
    Swapped the 2x7950's to my Z87 rig (they ran perfectly in Xfire)
    Last edited by boondocks; 10-06-2014 at 02:43 AM.
    Maximus 8 Hero/6700K @ 4.8/4x4GB LPX @ 3200 15-17-17-36 CR1
    Case Labs SM8 w/dual pedestals / Custom water w/ acrylic pipe / Light box
    PowerColor 390Xw/EK block / Samsung 840 Pro 256GBx2 RAID 0 / 128GBx1 SSD's | 3 HDD's / DVD burner
    Dual Aquaero 5 Pro controllers for pumps & fans / FC9 for led's only 2xD5 pwm w/Bitspower tops - MCP35x2 - 3x480 rads/1x240 rad/AP15 fans / EK supremcy
    Seasonic Platinum 1000w custom fabbed/sleeved psu wiring by me

    Wifes: Z77X-UD5H / 3770K w/c with Raystorm copper block & 2 Rads/ Kingston HyperX RAM / Switch 810 case/ PowerColor AX7950 w/EK block
    HTPC: Z68 Pro3 M / 2105

    SOLD:Z97X-UD5H /4790K/F11b mod BIOS/4.8@1.38 4x4GB Kingston Genesis KHX24C11X3K4 2400 RAM 11-13-13-30
    SOLD:Z87X-UD5H /4770K


  2. #2
    boondocks's Avatar
    boondocks is offline Senior Member
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    Default Re: Z97X-UD5H / 4790K / Xfire 7950's - pc shuts down when running Fire Strike

    -gpu wiring-. Although it looks fine, and continuity testing showed no problems, replacing the wiring seems to have fixed the shutdown problem.
    Now able to overclock the cards with no apparent problems.
    Maximus 8 Hero/6700K @ 4.8/4x4GB LPX @ 3200 15-17-17-36 CR1
    Case Labs SM8 w/dual pedestals / Custom water w/ acrylic pipe / Light box
    PowerColor 390Xw/EK block / Samsung 840 Pro 256GBx2 RAID 0 / 128GBx1 SSD's | 3 HDD's / DVD burner
    Dual Aquaero 5 Pro controllers for pumps & fans / FC9 for led's only 2xD5 pwm w/Bitspower tops - MCP35x2 - 3x480 rads/1x240 rad/AP15 fans / EK supremcy
    Seasonic Platinum 1000w custom fabbed/sleeved psu wiring by me

    Wifes: Z77X-UD5H / 3770K w/c with Raystorm copper block & 2 Rads/ Kingston HyperX RAM / Switch 810 case/ PowerColor AX7950 w/EK block
    HTPC: Z68 Pro3 M / 2105

    SOLD:Z97X-UD5H /4790K/F11b mod BIOS/4.8@1.38 4x4GB Kingston Genesis KHX24C11X3K4 2400 RAM 11-13-13-30
    SOLD:Z87X-UD5H /4770K


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