Will an x4 pci-e slot bottleneck a video card?

[toepickles]

hi guys i have crossfired 2 6770's but unfortunetly im seeing less performance. Could this be caused by the x4 slot?

 

[rolli59]

It is a settings issue, although x4 supports CF it is not recommended it should though increase performance not decrease it.

 

[toepickles]

thanks man ill look into the settings a bit

 

[rolli59]

If you just installed the second card did you reinstall the drivers?

 

[toepickles]

ok my psu wasnt giving power to the second card for some weird reason so i switched the power to a 6 pin to molex adapter and it seems to be working fine now. Thanks for the quick response (PS. I have a 750w PSU so not enough power isnt the problem)

 

[toepickles]

If you just installed the second card did you reinstall the drivers?

yes i did. again thanks for the reply!

 

[toepickles]

Best answer selected by toepickles.