I got myself a new computer recently, Q9550 w/4GB 1000MHZ RAM, but no OS for $1200 AUSD (before the market trouble). Installed win2k because I had it, and TG2TP5 crashed randomly about every 5 min. But since the beta release I've had no trouble at all, very stable and quick.
I did a quick sunset scene, rendered at 1600x900 Q-0.85 AA6 ATMO/CLD Quality 32, rendered in 1h 19.
Very impressed I was. I was limited by budget, so I chose the best I could without any frills, ie big LCD, vista etc. As soon as I can, I will be getting winxp64 and another 4GB, that should do me for now.
Iain