Originally Posted by Boris4ka
Wow, according to that calculator, my X300SE takes 4 more watts than a 7600GS.. I made a thread yesterday if my PSU would be able to handle a 7600.
People often over-estimate the power draw of video-cards. People keep saying for SLI 8800's you need a 750-850 or something crazy like that lol.
I tested an 8800GTX SLI set up with an over-clocked Core 2 Duo at stock voltage on a Corsair HX620U, I never touched a hair over 485 watts, and that's 100 watts below the Corsair's maximum 80% threshold.
I even ran a 7900GS on a 250 watt Dell PSU just for the heck of it. It ran fine and even 3dmarked fine, but I knew it was pushing the limits a little bit.
I'd say, up until high-range cards, you're pretty safe running a low-mid range card on a small PSU. This is especially the case with Dell PSU's. Their OEM PSU's are very very tolerant to high loads.
Don't get me wrong, I think a good PSU is necessary, I just think you can get away with a crappy one for a while. In the end though, it's good to set aside $50-60 for a nice Xclio or FSP 500 watt PSU.