Hi all. I have recently upgraded my PC to a am2 socket motherboard, Athlon 64 4000, 2gb dual channel ram and a Radeon x1950pro graphics card. The games i play mostly are Counterstrike Source and Warhammer Dawn of War. My X850XT PE was causing me some problems. It seemed to lag in games (3 or 4 short pauses per second constantly) and when i alt+tabbed into windows, it acted as if I had just installed windows but forgotten the video drivers - the windows were heavy and screen updates were slow meaning scrolling down a webpage while alt_tabbed out of a game is very slow. Now I have changed to a X1950pro and i still have the slow desktop when i alt_tab out during a game. My friend also commented that Dawn of war (plays better on nvidia according to the splash screen during startup) looked alot better on his nvidia 6600gt anyway, nothing to do with frame rate but just generally looks better with nicer colors and blending. This is with mine at 16xAF and 6xAA. So... This leads me to wonder... When did the Radeon desktop stuff get bad and if anyone has a driver that works well in desktop while games are running, i would like to know. Im using the latest omega driver but the newest ati official one gave me corruption in windows (missing icons, webpages not showing correctly etc). Could any of this be linked to a power supply issue> I have bought a 450w power supply recently but would that make windows performance drop like that? This may well be my last ati card if these problems are actually common.