Really Cool and Quiet Power Supplies?

How Does Passive Cooling Work In A Power Supply?

How can one power supply work without any fans at all, you might ask, when other power supplies routinely use three and sometimes even four fans ? For one thing, units without fans don’t cover the whole range of power demands. Passive cooling power supplies usually only offer a maximum power rating of up to 350 watts. In fact, the highest output from any power supply that uses only passive cooling is the Yesico power supply reviewed here, which is rated at 420 watts.

The Antec Phantom’s big passive cooling fins are big and easy to see.

Special heat conductors transport heat to the Antec’s built-in cooling fins

The Antec’s coils transfer heart to the aluminum case/cooling fins

The Antec incorporates a big, but nice-looking heat sink into its design.