[PA_Willy]

The ATI 4870 is currently the fastest card available and that chart certainly shows that particular card as being fast enough to handle IL2 at high resolutions with a single card. With older cards there is a benefit in using two cards at high resolution.

Firstly, the ATI 4870 isn't the fastest card available. The 280GTX is the fastest singl-GPU card, and the 4870X2 is the fastest dual card available.

Secondly, with two 4870 in CF you should see a performance boost at high resolution. You get the same benefits with one only card than with two of them. Consequence: SLI/CF doesn't improve our sim frames per second. Yes, one 4870 is enough, but you should see much more fps if the CF were working well.

With one card, with two or with a dual card (x2) you get the same performance in IL-2. Therefore, IL-2 isn't getting profit from dual systems.

Regards.