A little while back, I reviewed Antec's Signature series 850W power supply. Toward the end of that review, I threw down a challenge: any company who thought they could do better than that unit should give it a shot and send me the resulting power supply.

While I'm still waiting for responses from the likes of Zippy and PC Power and Cooling, Seasonic came through for me. I'm looking at the latest and greatest from them today in the M12D 850W unit. A beast of a power supply promising 70A of combined 12V capacity and bringing 80 Plus Silver certification with it. Let's see if it will do better than the Bronze certified Signature, shall we?

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