Overclockers Online has posted a new review on the nMedia Mute Power MP-400
Although only a 400W version, it should be fine for a decent low-end to mid-range system. For the higher-end PCs, nMedia offers the more powerful 500W version of the Mute Power. If there is one shortcoming, it would have to be the fact that the MP-400 is not modular. As people always say: caveat emptor.nMedia Mute Power MP-400 Review
