Thermaltake entered the SFX PSU market with two models featuring 450 and 600 W of maximum power. Both units are made by Enhance Electronics, so they are identical to SilverStone's similar-capacity SX600-G and SX450-G. We reviewed the former last year, and it failed to impress us big time. Excess ripple under full load killed it in our evaluation.
Naturally, we're curious to see if Enhance fixed this problem in the Thermaltake STP-0600F-G we're testing today. The fact is that it is very hard for such a physically diminutive PSU to deliver 600 W. Inevitably, some compromises have to be made in its design. Since no filtering caps are installed on its modular cables, ripple suppression can be challenging since there is limited space on the secondary side for installing lots of filtering caps. Without a doubt, ripple suppression and load regulation are the two most important performance aspects of a PSU, so every manufacturer should give its best to offer products that perform well in those two disciplines.