SLI and Crossfire Performance Poll

[JG52Krupi]

Firstly no fanboy/whiner arguments here please.

So I am running a 5970 in my spec and cannot use fullscreen due to the large decrease in performance (pseudo fps 40-60/fullscreen fps 15-30).

I thought I would create a poll to determine what experience other sli/crossfire users are experiencing.

PLEASE LEAVE A POST STATING WHICH TYPE YOU USE, THANKS.

[naz]

Originally Posted by JG52Krupi

Firstly no fanboy/whiner arguments here please.

So I am running a 5970 in my spec and cannot use fullscreen due to the large decrease in performance (pseudo fps 40-60/fullscreen fps 15-30).

I thought I would create a poll to determine what experience other sli/crossfire users are experiencing.

PLEASE LEAVE A POST STATING WHICH TYPE YOU USE, THANKS.

I have the same video card as you...and I also get decreased performance with full screen.

[SYN_Repent]

i get increased performance using 2 4890's with latest cat drivers, once drivers are cleanly installed i dont touch ANYTHING driver side or it f*cks it up in this game, with everything on high except trees and shadows game runs at 60fps with the very occasional slowdown with both cards showing around 35% gpu usage, if i turn shadows on, the cards go up to about 95% usage but still run at 60fps.

[David198502]

i dont really see a difference between pseudo and real full screen regarding performance.

but i have the impression that full screen is still not really working, at least on my rig.if i hit the escape button during a mission, most of the time it brings me to the desktop.sometimes i have to hit the escape button about 20times that i come to the menu screen.

[Ataros]

Originally Posted by JG52Krupi

So I am running a 5970 in my spec and cannot use fullscreen due to the large decrease in performance (pseudo fps 40-60/fullscreen fps 15-30).

Do you have the same decrease with vsynk OFF (both in game AND in drivers)?

It may be a case that vsynk does not work in pseudo, but works in full screen and limits your fps to 15 - 30. I had this issue till forced triple buffering ON with 3rd party software.

[JG52Krupi]

Originally Posted by Ataros

Do you have the same decrease with vsynk OFF (both in game AND in drivers)?

It may be a case that vsynk does not work in pseudo, but works in full screen and limits your fps to 15 - 30. I had this issue till forced triple buffering ON with 3rd party software.

Thanks for the heads up Ataros, I will try this.

[ATAG_Septic]

Originally Posted by JG52Krupi

Firstly no fanboy/whiner arguments here please.

So I am running a 5970 in my spec and cannot use fullscreen due to the large decrease in performance (pseudo fps 40-60/fullscreen fps 15-30).

I thought I would create a poll to determine what experience other sli/crossfire users are experiencing.

PLEASE LEAVE A POST STATING WHICH TYPE YOU USE, THANKS.

XFX 5970 BE 2gb, not overclocked despite the card having plently of potential as this does not seem to improve performance. No discernable difference between full-screen or psuedo (since last two patches) but I have v-sync on. X-fire display shows approx 30% on both GPUs.

After many many hours of testing i'll share my settings, which might be useful for those with similar hardware; i7 930@4ghz 6gb ram, opsys and game installed on SSD. Win 7, Catalyst 11.7.

I currently believe the best settings for me are;

Game settings; everything on full except SSAO and AA@ 2X, building detail and forest medium. Resolution set to 1776/1000@24fps (which subjectively looks great on my screen). I get no micro-stutters and really enjoy playing the game especially using some of the greatly appreciated work of campaign and mission builders. I turn off trees for on-line play and am only rarely troubled by sound bug.

[BlitzPig_fox]

I use a HD4870X2 and cannot get crossfire to activate.

[Welshman]

only way i got crossfire to work was to uninstall the CCC and use radeon pro, make a profile for CLOD using settings i saw on here , works ok except slight graphic bugs in the prop

[Purg]

Using two 570's in SLI with the driver before the latest (latest driver gives me strange artifacts in several games I play) and the 2nd card is being utilised up to ~40% but absolutely no change in FPS compared to when I disable SLI.