Silverstone ST1200-PTS PSU 1200W Power Supply Review: Page 5 of 7

Posted by Damon Bailey on Monday, August 26, 2019 - 8:00am

On the Inside

Silverstone ST1200-PTS PSU 1200W Power Supply 80+ Platinum

The cooling for Silverstone’s ST1200-PTS is a relatively small 120mm fan and can pull up to around 3½ watts at full tilt.

Silverstone ST1200-PTS PSU 1200W Power Supply 80+ Platinum

Tucked next to it is incoming power filter you can see hanging out the side here.

Silverstone ST1200-PTS PSU 1200W Power Supply 80+ Platinum

Silverstone goes to great lengths to filter incoming power with a beefy assortment of X and Y caps and even an in-line choke.

Silverstone ST1200-PTS PSU 1200W Power Supply 80+ Platinum

To get the PCB out of the casing, we have to unplug the power switch.

Silverstone ST1200-PTS PSU 1200W Power Supply 80+ Platinum

There is even more very impressive filtering on the board.

Silverstone ST1200-PTS PSU 1200W Power Supply 80+ Platinum

The rear of the PSU has the main MOSFET’s that are heatsinked to the case via a large thermal pad.

Silverstone ST1200-PTS PSU 1200W Power Supply 80+ Platinum

Under the thermal pad hides eight power MOSFET’s.

Silverstone ST1200-PTS PSU 1200W Power Supply 80+ Platinum

The smaller components are cooled with two large heatsinks that fan out over the top of the components and under the fan.

Silverstone ST1200-PTS PSU 1200W Power Supply 80+ Platinum

Bulk capacitance is provided by a pair of 560uF capacitors rated for 105C.

Silverstone ST1200-PTS PSU 1200W Power Supply 80+ Platinum

The modular connector board at the rear of the power supply has heavy buss bars and some filter capacitors on it.

Silverstone ST1200-PTS PSU 1200W Power Supply 80+ Platinum

There is a secondary board stacked behind it with a ton of filtering.

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