As a precursor to their review of the BFG 1kw PSU that they've published today, the [H] crew takes a moment to explain their power supply testing methodology. These guys definitely do a number on their review units. Reminds me of the HardwareSecrets article when they explained the same thing.

"PSUs are now a 'make or break' element in a high end system build that cannot afford to be skimped on. And when you buy a power supply, don’t you want to know that it can provide your system with quality power at the rating printed on the box while it is inside your case?"