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HD6870 & HD6850 in Xfire?

post #1 of 5
Thread Starter 
i already have an HD6850, and i was wondering if its possible to run that and a HD6870 in xfire? from what i understand, as long as both cards have the same gpu then its possible. my "new" motherboard will have 2 pci-e x16 slots so losing bandwidth to an x8 slot wont be a problem.

any advice is much appreciated.
st0rm tr00per
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st0rm tr00per
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Hard DriveOptical DriveOSMonitor
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post #2 of 5
Well its not really recommended since the other card wont be running at full potential. Thats what I heard anyway. It will run better than the 6850 but wont run as good as 6870 Xfired.
kaoru
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kirino
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kaoru
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kirino
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CPUMotherboardGraphicsRAM
Zosma 960T SABERTOOTH 990FX Radeon HD 6850 SAMSUNG 
Hard DriveHard DriveHard DriveHard Drive
Seagate Barracuda 250GB Western Digital WD Green WD20EARX 2TB ST2000DM001 Western Digital Scorpio Black WD1600BEKT  
Optical DriveCoolingOSOS
LITE-ON 24X DVD Writer GentleTyphoon 2150 x3 Windows 8.1 Professional Windows 7 Professional 
MonitorPowerCaseOther
SyncMaster P2370HD CORSAIR CMPSU-550VX  Fractal Design R4 HighPointTech Raid Controller 4320 
CPUMotherboardGraphicsRAM
AMD A8-3850 Llano BIOSTAR A75MH AMD Radeon HD 6550D G.SKILL Ripjaws 
Hard DriveCoolingCoolingOS
Western Digital Black Scythe SCKBT-1000 Kabuto BitFenix Spectre Pro 120mm Fan - White LED Windows 7 Professional 
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post #3 of 5
It's not recommended on a price - performance basis either.

The 6850 overclocked runs almost as fast as the 6870 overclocked. Just get a 2nd 6850 and run both at the same speeds - the performance difference from crossfire 6870's will be negligible at best
 
PortaPuter
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PortaPuter
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post #4 of 5
Thread Starter 
thanks caffeinescandal and willibj for the input.
i really appreciate it. cheers.
st0rm tr00per
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Phenom II x4 955 BE @4.0GHz Asus Crosshair IV (2) XFX HD 6850 Crossfire @925MHz/1150MHz G.Skill Ripjaws 4x2GB DDR3 @1700MHz 
Hard DriveOptical DriveOSMonitor
120GB OCZ Solid 3- Samsung F3&F4 Liteon DVD-RW Win7 Ult. BE 24" Gateway LED 
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st0rm tr00per
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Phenom II x4 955 BE @4.0GHz Asus Crosshair IV (2) XFX HD 6850 Crossfire @925MHz/1150MHz G.Skill Ripjaws 4x2GB DDR3 @1700MHz 
Hard DriveOptical DriveOSMonitor
120GB OCZ Solid 3- Samsung F3&F4 Liteon DVD-RW Win7 Ult. BE 24" Gateway LED 
KeyboardPowerCaseMouse
G-15 Cougar 850W Corsair 600T SE Sidewinder x5 
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post #5 of 5
Oh and crossfire scales down the higher card (6870) to the lower cards settings (6850) so a 6870 and 6850 crossfired will run exactly the same as 2 x 6850 crossfired.

You're welcome OP
 
PortaPuter
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Windows 8 64bit 14" Brightview LED (1366x768) 
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PortaPuter
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CPUGraphicsRAMHard Drive
Intel Core i5-3210m 2gb Radeon HD7670m DDR3 @ 780mhz/1095mhz 6gb DDR3 1600mhz 500gb HDD 
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Windows 8 64bit 14" Brightview LED (1366x768) 
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