I call bullstuff.
Well, one of my IRL friends has a Phenom II X4 3.2 GHz PC, and I have a Core 2 Duo 2.8 GHz. Our RAM could've been different (his may have been slower, we both have 4 GB DDR2), but I know that mine booted up in about 20 seconds, compared to 30 (both fairly new installs with no programs set to run on startup). We both have GTS 250's (1 GB), his CPU loaded TF2 slower than mine, and his performed slower (I got an average 115 FPS, he got 100).
Edit: Oh, and both PC's were running TF2 on the highest settings, 1280x1024, with no players, on 2fort, looking at more or less the same thing.