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Xfire/Trifire 6950's

post #1 of 3
Thread Starter 
Does anyone know the performance hit running a trifire setup of 6950's on an asrock p67 extreme 6 board?

Running crossfire atm. Have a third card but waiting for a more powerful PSU.

The mobo runs either
1 @ x16
2 @ x8
3 @ x8x8x4

But if I understand things correctly, ALL will run at x4?
Or am I not really understanding what Asrock are trying to say? :-S
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Gene Z
(8 items)
 
5970CF H2O
(16 items)
 
Core X
(9 items)
 
CPUMotherboardGraphicsRAM
Intel 2500K ASUS Max Gene Z ASUS 580GTX CU II G.Skill Ripjawz  
Hard DriveCoolingPowerCase
WD Black 1TB/64MB Air Corsair 850 Temjin TJ08-E 
CPUMotherboardGraphicsRAM
Intel Core i7 2600K Asrock Z68 Fata1ty Pro Gen 3 2 x ATI Radeon 5970 Corsair Vengeance 16GB 
Hard DriveHard DriveOptical DriveCooling
OCZ Vertex 2 SSD 120GB Seagate 7200.12 80GB LG BD Burner GPUs watercooled / CPU stock 
OSMonitorKeyboardPower
Windows 7 24" Samsung LCD Some old junk FD 1000W 
CaseMouseMouse PadAudio
800D Microsoft something Its round, with a picture of a cookie Onboard (Realtek something) 
CPUMotherboardGraphicsRAM
Intel Core i7 3960X Asus Rampage IV Extreme GTX580s (4) Corsair Vengeance 1600Mhz 
CoolingOSMonitorPower
1080 + 3x360 Windows 7 Samsung 8005 55" Corsair AX1200 
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Xigmatek  
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post #2 of 3
Its kinda pointless to run a third card on that mobo as it will be bandwidth limited with only an x4 slot. You only loose about 3-4% going from x16-x16 to x8-x8 so I think crossfire is the only reasonable choice in your situation.
post #3 of 3
Toms did a great article on this here.
 
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HTPC
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i7-3930k MSI X79MA-GD45 Powercolor 7950 G Skill 
Hard DriveCoolingCoolingCooling
Samsung 830 Swiftech Apogee XT Rev. 1 EK-FC HWLabs Black Ice GTX 240 and a Koolance HX-CU72... 
CoolingCoolingOSOS
MCP 35X and a MCP 350 Koolance 401x2 Opensuse 12.1 Windows 7 
KeyboardPowerCase
Ducky OCN with cherry blues Antec True Power New 650W Cooler Master CM690 II 
CPUMotherboardGraphicsRAM
i5-750 Gigabyte p55-ud2 GTX 430 G Skill 
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