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6850 crossfire with 6870

post #1 of 5
Thread Starter 
Hello,

I need some advice because ,currently have xfx 6850 and I am planning to crossfire with 6870. I read some other threads that 6870 will be downgraded
to match the 6850, but what if I will overclock the 6850 to match the stock
on 6780? Also will my XFX 650W PSU would be ok for this setup?

Thanks!
Athena
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Athena
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post #2 of 5
For CFX the speeds are always governed by the weakest card, so really save the extra money and get another 6850 and overclock as you wish.

The PSU is just fine.
Edited by Doom - 5/19/11 at 5:03pm
Aces and Eights
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955 X4 BE [3.82 Ghz] Lanparty DK 790FX  HIS 6870 X 2 CFX 4Gig OCZ Reaper DDR2 800 
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Aces and Eights
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955 X4 BE [3.82 Ghz] Lanparty DK 790FX  HIS 6870 X 2 CFX 4Gig OCZ Reaper DDR2 800 
Hard DriveHard DriveOptical DriveCooling
2X Hitachi 1TB raid 0 Seagate Barracuda Sony DVD RW DRU 830A  Coolermaster Hyper 212+  
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post #3 of 5
Quote:
Originally Posted by dhenzjhen View Post
Hello,

I need some advice because ,currently have xfx 6850 and I am planning to crossfire with 6870. I read some other threads that 6870 will be downgraded
to match the 6850, but what if I will overclock the 6850 to match the stock
on 6780? Also will my XFX 650W PSU would be ok for this setup?

Thanks!
You would be better off getting two 6850 or 6870s, since the 6870 has 160 more shader units than the 6850, as well as a 125Mhz higher clock speed. I doubt the 6870 will be "downgraded", but that might depend on which card is set as the primary. OC'ing the 6850 to around 900Mhz might alleviate any problems though. Other than that, your PSU will be able to handle the load.
Edited by Eugenester - 5/19/11 at 7:27pm
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The Dude Abides
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post #4 of 5
Thread Starter 
Thanks for the quick reply Doom and Eugenester!!
Athena
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Athena
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Achilles
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[XFX] 650W [Cooler Master] HAF X [Logitech] G400 
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post #5 of 5
2x hd 6850's will be more than enough for most games at 1920x1080p
    
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