Hmmmm, wreaks of dead PSU or dead Mobo
Could be both. And the latter could likely be the result of the former.
Ahaha, no. It can probably deliver nowhere close to 250W.
Mathematically I'm not joking, actually. I know that there is one Logisys "575W" PSU on Newegg. While the advertised "rating" is 575W, this is a combined rating that takes into account peak (not constant) capacity as well as the 3.3V and 5V rails. The 12V rail (which is really, in modern PCs [i.e. since CPUs matured past the Pentium III era and stopped using the 3.3V or 5V as sources for CPU voltage] the only thing that matters) is actually rated to provide just 25A or 300W. This is a common trait with low end PSUs. Combine that with mediocre quality everywhere and essentially you have a potential light show on your hands. I once had a Logisys "480W" PSU that couldn't hold a candle to a simple dual core Athlon II x2 build with 880G mobo graphics. The 12V rail voltage displayed above 12.6V and out of spec. Replaced it immediately and without regret.
A true quality PSU would rate based on 12V rail capacity, feature high efficiency, high build quality, come from a reputable brand, and probably have not such a bad record. You don't need to pay a lot for a good PSU. Between $10-20 (not a large premium) can buy you a CX 430 V2 or Neo ECO 450 that would outperform these low end mediocre units and provide at least twice as much actual power.
Edited by xd_1771 - 9/12/12 at 4:51pm