2nd gpu not recognized? UMM....

[p0rtal]

Hello, im having an issue hopefully someone can help with, im trying to run hd6950s in crossfire, installed both cards and used the crossfire bridge, have the latest catalyst and my pc is not recognizing the second gpu. Not sure at all what i am supposed to do

When i run the benchmark in resident evil 5 it caps at 60fps but i see people running well over 100fps with crossfire less powerful than mine, dual 6950 2gb cards should do better than 60fps, fps is unlocked and everything is maxed, i still get 60 fps on low. What am I doing wrong?

 

[billj214]

What motherboard are you using?
What is your CPU?
Do you have all the power connectors connected on both GPU's?
Are you saying the device manager under "display adapters" is not showing both cards?
What is your power supply unit amperage rating on 12v rails?
What other devices are installed on PCI slots in your PC?

 

[p0rtal]

its an X58 gaming series mb that supports crossfire, i7 930, it looks like the power connectors are all hooked up right, the 2nd gpu didnt show in device manager until i just rebooted the system, it shows now, coolix 800w psu, nothing else in the pci slots right now, still getting only 60fps on re5 benchmark, also is enabled in the catalyst menu.

 

[jcurry23]

Not sure why it won't recognize your 2nd gpu. But to see past 60fps you will have to turn off V-sync.

 

[p0rtal]

ahh beautiful, thanks that worked, running 3x that now thanks so much

 

[beltzy]

Here's some info on both v-sync and screen tearing (the two issues go hand in hand). It's wikipedia but it will give you a general understanding:

http://en.wikipedia.org/wiki/Screen_tearing