Originally Posted by toughacton
About sums it up, they overrate the wattage a lot especially on the non 80 plus units. You'd get 400 out of the v-600 safely though I would imagine.
ITs tough looking at low end PSUs I know. I'm just saying that out of 2 units I've personally owned that the v-600 is "OK" for daily driving. My brothers powers an A55 board with A4 APU and 4 gigs ram with 2 HDDs and dvdrom just fine, but he's only been running for a few months now. MY old one (which could by all means be a different OEM or something) was running a 939 board and single core 3200 athlon for 6 years. Its a cheap PSU, and so you can't really expect much from it but I took a gamble on one and its been fine.
That said, If you can spend closer to 50 dollars I would, since with PSUs the more you spend the better it is really does apply, and I have heard some pretty good reviews of the Lepa brand so it may be the better choice.
If the V-500 already have difficulty powering half of the rated power (went out of specs at 150w on the 5v and at 250w on the 12v), a unit that has a 100w higher rated output that is based on the exact same platform won't do any better. An A4 APU build has a power draw of <100w DC.
Quite honestly, just because it so happen to run a particular system, doesn't mean that the OP should invest in a trashy unit that cannot remotely deliver its rated wattage safely. To make matters worse, it stayed on for a while when it was out of spec.
Since the V-600 is priced at $35 before tax at Frys, he could make an effort to buy something online (which it seem like he is considering) that offer free shipping and no tax here (unless you live in CA) : http://us.ncix.com/products/?sku=30144