Originally Posted by teichu
hi i dont have vsync on , and yes i am talking about single player mode , but how come some people's sli setup can get over 90% consistent gpu usuage in crysiswarhead? but my both gpu usage r inconsistent , some place i can get 90% and some place drop to 60-70% , especially in final mission i cant get 90% usage on both gpu ,ususally i got only 60-70% in last mission but when i running single 580 , my gpu usage always 99% , so i just dont get those people who have sli setup how can they get 99% usuage all the time in crysiswarhed? any method??
Are you sure you're comparing the exact same part(s) of the game with these other people who're saying they "always have high usage"?
I'd say there's a decent chance that the final mission is a very cpu-intensive portion, so it's bottlenecking a bit when you run both cards.
When you run a single card, the FPS is lower, so the CPU has an easier time keeping up. Plus there's less cpu overhead when running a single card, as part of your CPU power goes to managing SLI. That's why you get 99% usage on one card in the same part of the game.
It could also be caused by a bottleneck elsewhere in the system besides card/cpu, but personally my money is on CPU. firstname.lastname@example.org is very powerful, but so is GTX580 in SLI, and Crysis/WH in some parts of the games can make some very heavy CPU demands, like I said above.Edited by brettjv - 5/10/11 at 3:28pm