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Thread: question about crossfire on P67A-UD4 B3 REV. 1.1




  1. #1
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    Default question about crossfire on P67A-UD4 B3 REV. 1.1

    hi, i am considering getting a second 6950 to run in crossfire. this will be the first time i have attempted something like this. if i understand the manual correctly all i need to do is install the second video card in the second 8x slot, hook the cable to both cards and start computer up. is there nothing i need to change in bios? i have first slot set at 16x, will i need to change that to 8x with 2 cards in system?
    Cooler master HAF932, Dell 2408WFP, Gigabyte P67A-UD4 B3 REV. 1.1, Intel core I7 2600K@ 4GHZ, XIGMATEK SD-1283 Gaia, Intel X25-M G2 160GB, 16GB DDR3 1600 Gskill Ripjaws ,XFX radeon HD6950, Pioneer BDR-205, Samsung SH-S243N 24X DVD-RW, western digital black 2TB, Antec TruePower 850 watt, windows 7 ultimate SP1 X64

  2. #2
    Acebmxer's Avatar
    Acebmxer is offline Gigabyte Elite
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    Default Re: question about crossfire on P67A-UD4 B3 REV. 1.1

    Nope should just as straight forward as that. The only issue I had was I had to uninstall all display drivers reboot into safemode and run driversweeper to remove all traces of the driver. Shut down add second gpu and add xfire connector. Boot the system and install drives. After another reboot select crossfire and good to go. But that was with a 5850 and a 5830.
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  3. #3
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    Default Re: question about crossfire on P67A-UD4 B3 REV. 1.1

    i wonder if it would be best to just do a new install and start fresh?
    Cooler master HAF932, Dell 2408WFP, Gigabyte P67A-UD4 B3 REV. 1.1, Intel core I7 2600K@ 4GHZ, XIGMATEK SD-1283 Gaia, Intel X25-M G2 160GB, 16GB DDR3 1600 Gskill Ripjaws ,XFX radeon HD6950, Pioneer BDR-205, Samsung SH-S243N 24X DVD-RW, western digital black 2TB, Antec TruePower 850 watt, windows 7 ultimate SP1 X64

  4. #4
    Acebmxer's Avatar
    Acebmxer is offline Gigabyte Elite
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    Default Re: question about crossfire on P67A-UD4 B3 REV. 1.1

    As far as the whole operating system? no not needed. Just proper uninstall of the display drivers is all that is needed. Now if it has been awhile since your last install then sure why not

    But no its not needed for this.
    Main Rig
    Gigabyte z87x-OC
    Haswell i7 4770k - 4.7Ghz @ 1.330v LLC Extreme (L310B492)
    G.Skill F3-1700CL9D-8GBXM DDR3-2133mhz 9-11-10-28 1.65v @ 2800mhz 12-14-14-35 1.7v
    Samsung Green 8GB 2x4GB MV-3V4G3D/US DDR3 1.3v 30nn @ 2200Mhz 11-11-11-32 1.60v
    Sapphire ATI HD 7970 3GB clocked 1200MHz @ 1.181v.
    HiS ATI HD 6950
    Samsung 840 Pro 256GB SSD (boot Drive) on Intel sata3 controller port0
    Corsair Force GT 120 GB Sata3 SSD on Intel sata3 controller port1
    Samsung 320GB HD322GJ 7200 RPM 16M cache on Intel sata3 controller port2
    Sony Optiarc DVD-RW AD-7240S on Intel sata3 controller port5
    CORSAIR CMPSU-850TX PSU
    Swiftech MCP655-B Pump
    EK Supremacy Cpu Block
    Swiftech Mcres Micro Rev 2 Reservoir
    Black Ice GTX Xtreme 360 Radiator





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