[terhardp]

From my rich experience in that respect, I can only advise you not to save on the PSU. Weak and underpowered power supply is cause of many problems with the computer. I've learned this myself a couple of times.

BTW, I'm currently using the same graphic card as you did (9800GT) and had to upgrade my, then brand new, Fortran Blue Storm II 500W because it wasn't powerful enough. Right now I'm using OCZ 700W PSU and all is working OK. Well, most of the time, but this is another story. I'm using this system for way to many purposes (as my personal recording studio, among the other things). Lately I had some Windows problems that leads me to suspect the PSU again, but since it's not too old and the brandless one, I'm guessing that the rather unstable power in my neighbourhood is the main culprit. I'm contemplating to buy an UPS which has an AVR function.

I'm not familiar with newer ATI cards that much (had used Nvidias for a long time now), but despite the official specifications, I would still invest in more powerful PSU. Maybe the card itself doesn't draw that much power, but you always have to consider other components in your system as well as the USB-powered peripheals.