Why does SLI affect certain games more than others?

[Perfect_Chaos]

Say, look at PREY & other OpenGL games like FEAR.. or even COD4

The games get a nice boost from SLI when if you look at Crysis then it hardly budges, why is that? it it because of the game engine? it seems like just about the only game that doesnt really benefit from having 2 cards.

or is it lazy devs that dont care about people that have 2+ cards?

 

[RaiderX]

SLI uses game profiles that make it adjust correctly depending on the games, some games have profiles but are not yet optimised so performance wont be noticably increased with sli

 

[Perfect_Chaos]

SLI uses game profiles that make it adjust correctly depending on the games, some games have profiles but are not yet optimised so performance wont be noticably increased with sli

so crysis doesnt get a boost because of profiles?

 

[RobertN]

think it comes down to the engine used all unreal 3 engine games seem to love it i think this because it is well optimized and very scalable

crysis is neither it struggles on every card invented so far

at least it is only one game not like the unreal engine which is widley used on console ports which is a big percentage of pc games these days

 

[Rroff]

If you use nHancer and tweak the crysis profile (can't remember the settings off hand - I'm on my laptop atm) you can get a 50% boost in the gain from SLI - works fine in the benchmark and demo - but theres probably a reason nVidia set the flags they did - possibly other settings causes issues later on in the full game... dunno. (Compare mine and the other persons' GX2 scores in the crysis benchmark thread)

 

[Baka^Ni]

If you use nHancer and tweak the crysis profile (can't remember the settings off hand - I'm on my laptop atm) you can get a 50% boost in the gain from SLI

I request, nay, I demand that you run to your pc and give us your sli settings for crysis For the good of the board of course