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EAF92_Brigstock
Guest
Games can be written specifically to benefit from SLI, especially newer gamer and even more so the benchmark suites. 3Dmark is a prime example. Over the years it has been accused of favouring ATI or NVidia over a range of generations of cards. At the moment the accusation is that it favours NVidia.
CFS3 is one of the games that doesn't benefit.
Sli uses the second gfx CPU to load balance the graphics demands. You are still running a primary card and it does most of the work. The secondary card is there to chip in CPU cycles when needed. The ram it has on board doesn't get used at all. The manufacturers never say that, because it makes people happy to think they are getting twice the graphics. But the reality is very few titles perform twice as efficiently. Most games can achieve a 30% increase in frames, some excel, some fail miserably. OFF/CFS3 falls into the later category.
CFS3 is one of the games that doesn't benefit.
Sli uses the second gfx CPU to load balance the graphics demands. You are still running a primary card and it does most of the work. The secondary card is there to chip in CPU cycles when needed. The ram it has on board doesn't get used at all. The manufacturers never say that, because it makes people happy to think they are getting twice the graphics. But the reality is very few titles perform twice as efficiently. Most games can achieve a 30% increase in frames, some excel, some fail miserably. OFF/CFS3 falls into the later category.