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Crossfire Compatibly 6870

post #1 of 2
Thread Starter 
I have a very recent version of the current Radeon xfx HD 687A-ZDFC. I wanted to get a second card to crossfire with, the Radeon xfx HD 687X-CNFC.... which has 2 gb of ram my first one is a single gb card... should i pay the extra 20 bucks for the CNFC vs the ZDFC for 20 bucks cheaper... Any advice if that is worth it?...
Thanks again!
friend of gh123man
post #2 of 2
Quote:
Originally Posted by gh123man View Post
I have a very recent version of the current Radeon xfx HD 687A-ZDFC. I wanted to get a second card to crossfire with, the Radeon xfx HD 687X-CNFC.... which has 2 gb of ram my first one is a single gb card... should i pay the extra 20 bucks for the CNFC vs the ZDFC for 20 bucks cheaper... Any advice if that is worth it?...
Thanks again!
friend of gh123man
No, you shouldn't. When you crossfire cards, one with 2GB and one 1GB, the effective VRAM is 1GB. In crossfire setup, each GPU is allocating the equal amount of VRAM. In this case the max is limited by the the card with 1GB.
ケンジ
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CPUCPUMotherboardGraphics
i7-3960X i7-980X GA-X79-UD7 / GA-X58A-UD9 7970 + 465 
GraphicsRAMRAMHard Drive
2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
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ケンジ
(16 items)
 
  
CPUCPUMotherboardGraphics
i7-3960X i7-980X GA-X79-UD7 / GA-X58A-UD9 7970 + 465 
GraphicsRAMRAMHard Drive
2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
CoolingCoolingOSPower
VID-AR699 EK FB X58A-UD9 Win 7 Ultimate x64 1500W / 1250W+1200W 
  hide details  
Reply
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