Low frame rates on Gaming PC

[Railven]

Just because both GPU's are being utilized does not mean SLI or Crossfire is working correctly. Take SWToR as an example. You can get sli to work but performance is the same as 1 vid card. You can get sli to work in most games that don't support sli. But again it'll perform like a vid card. The newer ffxiv benchmark did support SLI and scores almost doubled. Currently in early release i've tried sli and disabling sli and both perform the exact same. So no SLI is not currently working correctly.

FPS isn't bad and the lowest i've seen was like 28fps. Which isn't actually all that good either. Average is still above 60fps. Utilizing 1 or 2 560ti's is the exact same. 1920x1080 max settings but fxaa disabled as i'm using smaa instead. When they get SLI working i'd expect a low in the 50's.

Okay, so let me take two screen shots with and without CFX.

With CFX (Maximum Settings/1440p/No-V-sync):
http://i.imgur.com/qISUYxH.jpg

Without CFX (Maximum Settings/1440p/No-V-sync):
http://i.imgur.com/M4EeBO0.jpg

With CFX: ~62.8
Without CFX: ~46.8

Scaling Difference: ~62.8/46.8 == ~33% Scaling in this one screen shot.

Not to mention better minimums.

I can't answer for SLI, but I can definitely confirm CFX is working with Catalyst 13.6 Beta2. I actually can't play with one card since it becomes a stuttering mess.

[Railven]

I should have just done this to remove any CPU Bottle-necking:

Without CFX = ~90 FPS:
http://i.imgur.com/oCpexEF.jpg

With CFX = ~1750 FPS:
http://i.imgur.com/gMjYQrF.jpg

Scaling Difference: 175/90 == ~95% Scaling when CPU bottle-neck removed.

Yeah, sorry, this pretty much confirms CFX is working "properly."