To be honest, we didn't expect much from these cheap PSUs. We believe it’s pretty much impossible to manufacture a complex piece of hardware like a 500+ W power supply at the cost of a rib eye steak. As a general rule, you should definitely be wary when a deal sounds too good to be true, undercutting common price points by such a significant level.
Typically, hope dies last, which was also the case in this review. At least we thought we would be able to run the cheapo power supplies reliably for a couple of hours, even if not at maximum loads. With two of the three units dying quickly and none of them coming close to reaching their specified maximum loads, you have got to start wondering.
The retailers’ marketing of these products is more fraud than funny, and understandingly we must caution everyone about purchasing such products. If you are looking for a really cheap PSU, at least we recommend to go for a branded unit. Quality products start at $40 and it’s easily possible to spend five times more money, which is only necessary for the hardcore users out there.
Everyone else: make sure you're purchasing a quality PSU so that you can rest easy knowing your other components (and ultimately, your data) are safe. This test demonstrates one thing: if you buy too cheap, you will probably end up buying twice.
XION isn't as bad as these obviously, Ive run 4890s crossfired with a mild overclock on my 955. But the XION brand still makes me nervous.