It's supposedly made by Seasonic, but I've read that they can fail after 6 months or so, but since mine started up reasonably well, I hope it lasts. I understand it's a heat issue. I'm not taxing the system now and I have a heatpipe for the CPU and a 120mm exhaust fan, and can add an intake fan in the front.
It has 42 amps combined on the 3 rails, and that's enough above an 8800GTX, but I'm still thinking of the 8800GTS 640 just to play it safe. I'll be getting the new card on October 15. Ideally, I want the PSU to not be overtaxed, but I want the best I can afford in time for the holiday DX10 titles.
Right now, my 3DMark06 score is 2238 with the 7600GS. I hope to see better in the fall. I also upgraded the CPU from the original 3800+ Windsor to a 4600+. I can always use the 3800+ in another computer. It seemed like 2.4 gigahertz was the true entry level for games on an Athlon X2.