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Seasonic Platinum 1000W Modular Power Supply Review

Seasonic are using a San Ace 120 9s1212f404 fan. This is a Sanyo Denki unit which incorporates dual ball bearings.

The Platinum 1000W power supply is formed around the X Series design. The soldering quality throughout is excellent and the layout is clean with several row of thin heatsinks across the PCB. The +3.3V and +5V voltage regulators have been from the main PCB to a modular DC connector board which attaches to the front of the enclosure.

The design comprises two coils, two X caps, two Y caps and a MOV.

Seasonic are using Nippon Chemi Con capacitors throughout. The primary capacitors are 105c rated 420v 330uF. There is a tiny daughtercard in front of these which is home to a CM6901 PWM controller.

The secondary stage also uses Nippon Chemi Con capacitors, a mixture of solid polymer and electrolytic. They are using the highest grade components in this design which is reassuring at the cost. The VRM is controlled by a APW7159.

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