Half-Life 2
As we discovered in the first article, despite AFR being the default SLI mode for Half-Life 2 in current drivers, SFR actually offers up more performance. I benchmark in both modes.AFR
6800 GTs in AFR mode are faster than a single Ultra by 20% at the upper resolution and SLI'd Ultra's continue to offer up the best possible Half-Life 2 performance by quite some margin.
SFR
In SFR mode, SLI GTs perform excellently, pushing up on the CPU limitation even at 1600x1200 with 8AF, 4AA. They're not too far off the performance of SLI Ultras, both setups able to bring the FX-55 back into play as the limiting performance factor.
If Source-engine games are your love (and who can fail to be enamoured by Half-Life 2!), a pair of GTs will serve you very well.
