Hi there, I bought a XFX GF 7600GT 256MB 560Mhz clockmemory 1400Mhz clockspeed (ram) 8XAGP 128bit GDDR3. I replaced it for an Asus GF 6600GT 128MB CM 500Mhz CS 900Mhz 8xAGP 128bit GDDR3 With my new 7600GT installed I didn't get that much improvement in some different games as I aspected while it should beat the 6600GT in some higher game settings. There's no major improvement visible only a little and I think that the 256MB on the 7600 is doing the job instead of the higher clockvalue's on the 7600. So I searched for a way to monitor the card's clocks and found rivatuner. Rivatuner shows a clockmemory of 560Mhz wich is correct and a clockspeed of 702 Mhz wich is half the value. When I use coolbit, the OC-tab in the controlpanel shows the standard clockvalue's as they should be (560/1400 Mhz). When using rivatuner with onscreendisplay while playing a game, the value of the clockspeed stays straight at 702Mhz (flatline at 702). So...it didn't feel right. I searched for articles on the internet and found out that a PSU with the right Watt's and Volt's are very important. So I replaced my PSU (400W 12v, 12A) for a new one (650W, 12v, 25A). But I got the same value's. My system is up-to-date, using always the newest drivers for the hardware. Even the BIOS is up to date (incl. an updated AGP driver) Can someone PLZ explain what is going on? Is the 7600GT really running at half speed or does rivatuner calculates it in a different way. Thank you very much!