Bjorn3D posted a review on the Thermaltake Purepower RX 500W & 600W

The boom for SLI / Crossfire cards as well as dual core CPUs brought us a lot of new products in the power supply market. As PC components become more powerful each year, we have to keep up with the power to feed them. This statement shouldn't be taken so seriously as there are plenty of mid range products that require half the power the big boys do. Die shrinks and low power consumption technology provide less budgeted customers to enjoy very best of PC computing.

On today's test bed we have two mid-range power supplies from Thermaltake: Purepower RX 500W and 600W -- both featuring cable management system. Knowing Thermaltake, these will perform marvelously.

Thermaltake Purepower RX 500W & 600W Review