Cooler Master eXtreme Power Plus 400 W Power Supply Review

Conclusions

Cooler Master eXtreme Power Plus 400 W is capable to deliver its labeled power at high temperatures. But as we always like to point out, maximum power isn’t everything. This unit presents lousy efficiency and noise and ripple levels above the maximum allowed, which can lead you computer to present rando
m behavior (“freezing,” random resets, Blue Screen of Death, etc) and overload components. Therefore we can’t recommend this product.

The three units from eXtreme Power Plus series that we’ve reviewed so far (400 W, 460 W and 500 W) are based on the same design, and the differences are that the 460 W and the 500 W models use more powerful rectifiers on the +5 V and +3.3 V outputs (the +12 V outputs from these three models use the same rectifiers). The 400 W and the 460 W models use the same switching transistors, while the 500 W model uses more powerful ones.