My Ti-book (400mhz, 256, 20 gig) runs comparably to my dad's Celeron (433, 312, 100gig-7200rpm). I am not impressed with the performance of XP, and I am not impressed with the performance of X (I even have XP's cache file on another hd!!). XP maybe faster resizing windows, but it still feels very slow. It is nothing compared to win 98 in speed. That said though, X is nothing like 7.0 or 8.1. I have been using computers for 11 years now. I have lived with Win 3.11, system 7.5 (bleh), and now X and XP. There have been brighter days when it comes to RAW OS speed, but now we finally have stability. Things will pick up, push push push for better hardware!