Hyperthreading Sucks
ZDNet is reporting that hyperthreading degrades server performance. And of course, that's for "heavily threaded" apps. Imagine when you sell an HT-enabled PC to an average user and they run a more or less single-threaded CPU-bound app (say, for example, a game). Pay the performance price, get no gain. Sounds like a great deal.
I'll stick with AMD.