SilverStone ST1200-PTS Platinum PSU Review

Packaging & Contents

Black packaging proudly displays the world’s smallest kilowatt ATX PSU. The box includes a rundown of all crucial information a consumer may need for on-the-fly quick comparison.

Inside the box we find:

  • ST1200-PTS PSU
  • Cable load out
  • Mounting hardware/cable ties
  • Magnetic fan grill
  • Spec manual
  • Installation manual
  • Warranty manual

Mounting hardware, zip ties, and cable straps to help with easy and clean wire management.

Looking Closer

The ST1200-PTS is incredibly small.  Measuring a mere 5.91″ (W) x 3.39″ (H) x 5.51″ (D). Thanks to general advancements in technology, devices and components have been on a steady curve of becoming smaller, and more efficient. The ST1200-PTS has a footprint of only 140mm.  In the PSU world, SilverStone has been extremely consistent in providing small, powerful options. This is the second time in recent memory they have a title for “Worlds Smallest”, previously holding the title in 2016 with the world’s smallest 850W PSU.

Inside the ST1200-PTS is a 120mm HYB (Hybrid Ceramic Bearing) rifle bearing design fan set to power on at 20%+ load. In this photo, we can see the only aesthetic adornment on the ST1200-PTS, a tastefully placed Silverstone logo in the center of the fan. The rest of the PSU is blacked out and should blend with most any build nicely.

SilverStone has included a full loadout of dust cap protectors to keep dust out and minimize any related issues due to internal dust buildup in the ports. Modular cables allow builders to use only the cords needed for their specific build. Personally, I am not a fan of the blue connectors on the PSU, as always I will mention my opposition to adding primary colors to devices. Connections include:

  • Four PCIe outputs
  • Four peripheral connections
  • Two CPU power outputs
  • 24 pin main output

On the backside of the ST-1200-PTS we see a standard power plug and switch, The rest of the backside is a honeycomb pattern to allow airflow and because it just looks awesome.

A side shot shows a specification sticker with a rundown of all necessary technical data needed at a glance.

Rail 3.3V 5V 12V 5VSB -12V
Max. Power Amps 25 22 100 3 0.3
Watts 120 1200 15 3.6
Total Max. Power (W) 1200

The ST1200-PTS comes with a magnetic mesh fan grill. Simply place the grill over the fan and the magnets hold it in place. No tools required.

Cables are flat black modular ribbon cables.  This type of cable design allows the cables to bend and twist at hard angles and fit within small openings much easier than traditional cable design.  A few extra small cable straps can be found on the 24 pin cable.  The cables are a bit shorter in length compared to most, this is due to the small nature of the PSU, SilverStone most likely assumes these PSU’s will be used in primarily small form factor builds. bam

1 x 24 / 20-Pin motherboard connector(”600mm”)
1 x 8 / 4-Pin EPS / ATX 12V connector(”550mm”)
1 x 8 / 4-Pin EPS / ATX 12V connector(”750mm”)
8 x 8 / 6-Pin PCIE connector(”550mm/150mm” X4)
8 x SATA connector(”600mm /150mm / 150mm / 150mm” X2)
6 x 4-Pin Peripheral connector(”600mm / 150mm / 150mm” X2)
2 x 4-Pin Floppy connector(”150mm” X2)

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