Supplementary PSU Roundup
 

In part one of this roundup, I looked at two lower powered models from Ultra and FSP designed to supplement one's main PSU in providing power for the newer and more watt hungry video cards. In part two, both of those units are in for some "tough" competition in the form of two big bad Thermaltakes - the Toughpower Power Express 450W and 650W units.

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