Since I have a six-core cpu now, I thought I would see if the Threaded Optimization setting in the Nvidia Control Panel was worth turning on or off or leaving at auto. Here are my benches using Fraps: Auto: Frames, Time (ms), Min, Max, Avg 20338, 90000, 198, 252, 225.978 On: Frames, Time (ms), Min, Max, Avg 21081, 90000, 203, 263, 234.233 Off: Frames, Time (ms), Min, Max, Avg 20889, 90000, 204, 259, 232.100 As you can see, forcing it on gives the best results in terms of frames and fps. Surprisingly, leaving it on auto gave the worst results. So there you go. Your results may vary.