[Rewindlabs]

So i keep hearing that running crossfire on a setup like mine with only x16 and x8 might be giving me negative performance?

What do you guys think?

 

[iDeal]

I run with x16/x8 just fine. Nothing to worry about.

 

[skkhai]

Have the 4890 in the 16x slot. The 4870 at 8x shouldn't be a big issue. If anything you lose maybe 1-2% performance.

EDIT: Although, the GD70 is supposed to do 16x/16x? At least mine did with CF 4870s...

 

[grunion]

You wouldn't even notice the difference, except for a synthetic benchmark score here and there.

 

[voodoo861]

Yep, except for maybe some synthetics, you wont notice. Most gpus dont or cant even use the full 8x.

 

[Rewindlabs]

I have the 4870 in the slot thats running at x8 and i know that an x8 slot shouldn't bottleneck the 4870 but i don't know how crossfire works out in all of this

I have one guy telling me its not optimal too run crossfire at x16/x8 and is frowned upon or something like that

 

[SgtHop]

Not even a 5870 will saturate an 8x slot. You're fine.

 

[ShortySmalls]

hell im running sli on x8/x8 and i Gained 2k to my gpu score on vantage, might have been from chaging from a Q6600 3.6ghz/750i FTW to a i7. unless your running a GTX 295 or a 5970 your not gona use up all the bandwith of a x8 pcie 2.0 slot can provide.

 

[kz26]

Should not be a problem, but as previously mentioned the 790FX is capable of x16/x16...is one of your slots not running at full speed?

 

[Rewindlabs]

Quote:

Originally Posted by kz26 Should not be a problem, but as previously mentioned the 790FX is capable of x16/x16...is one of your slots not running at full speed?

http://www.overclock.net/amd-motherb...crossfire.html

Thanks for the input guys...i wasn't really sure if what the guy was going on about was something i should worry about or not

And BTW i knew that the card couldn't saturate the x8 slot but i wasn't sure how xfire played out in the equation...

 

[Meaker]

Quote:

Originally Posted by SgtHop Not even a 5870 will saturate an 8x slot. You're fine.

Actually i does, there is a definate rise in performace.