A few days ago I switched from a normal Pentium 4 to a Pentium 4 with Hyper Threading Technology. And oh man, it just rocks. I can stress test with OCCT while running Internet Explorer, AIM, iTunes, all simultaneously and very smooth. Before I can only run OCCT, and every other applications lags while using it. But 1 real core and 1 simulated core are better than 1! I'm amazed.