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With anti-aliasing, the CPU in our test platform makes the situation look worse than it really is. Very few of the cards get over a 25 fps rate. A fast quad-core system should raise the values and better utilize the more powerful graphics chips. In terms of percent, the performance gain with Very High settings and anti-aliasing at 1920x1200 pixels is impressive. The GeForce GTX 260 in SLI gains 71.5% over the GTX 260 when used as a single card.
The GeForce 9800 GX2, 9800 GTX and 9800 GTX in SLI have some minor problems in the highest resolution, where the weaker 512 MB frame buffer on a 256-bit bus hurts performance. The 8800 GTS 320 also suffers from a lack of memory throughput, although we were aware of this issue. Good gains can be achieved by the GeForce 9600 GT and 8800 GT 1,024 MB versions, and SLI shows good scaling as well.