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Cooler Master Silent Pro M2 850W

This PSU hails from the same series as the earlier tested Silent Pro M2 1000W.

The packaging is the same except for the model name and specifications. The accessories include a user manual, a mains cord, and mounting screws.

Exterior Design

The Silent Pro M2 850W looks exactly like its higher-wattage cousin we tested earlier. It doesn’t have the latter’s manufacturing defects, though.

There are some original traits in its appearance like the curved-in fan grid. The gray-black color scheme makes it look quite imposing.

Besides a mains connector and a large On/Off switch, we can see a honeycomb vent grid on the back panel. The grid doesn’t occupy the entire panel, though.

Circuit Design

The Silent Pro M2 850W is identical to its 1000W cousin in terms of the interior design.

Upon closer inspection we find that we were wrong suggesting that this series lacked dedicated voltage regulation.

Notwithstanding the lack of DC-DC converters and the presence of only a couple of chokes, the PSU indeed regulates its voltages independently. The +5V and +3.3V voltages are just regulated with one choke.

A conspicuous difference from the 1000W model is the lack of a third small heatsink between the large heatsink near the A-PFC choke and the input filter chokes. A power component is missing there, so there’s no need to cool it anymore.

Like the 1000W model, the Silent Pro M2 850W uses different brands of capacitors on its output. There are Teapo components next to the small choke that regulates +3.3V and +5V.

Taicon capacitors can be found near the large +12V choke.

Cables and Connectors

The Silent Pro M2 850W is equipped with the following cables and connectors:

  • One mainboard cable with a 20+4-pin connector (55 cm)
  • Two CPU cables with an 8-pin connector (60 cm)
  • Three connectors for graphics card cables
  • Five connectors for peripheral power cables

Included with the PSU are:

  • Three power cables for graphics cards with one 8-pin and one 6+2-pin connector on each (65+10 cm)
  • One cable with three PATA power connectors (50+11+10 cm)
  • One cable with two PATA power connectors and a floppy-drive plug (76+10+11 cm)
  • Two cables with four SATA power connectors on each (50+10+10+10 cm)
  • One cable with four SATA power connectors (76+10+10+10 cm)

The selection of cable and connectors is identical to the 1000W model’s (except that our sample of the 1000W model had a defective cable with three instead of four SATA connectors). So, our criticism remains the same. We don’t like that it has three 8-pin graphics card connectors (you won’t be able to power even a pair of graphics cards with two 6-pin connectors on each unless you employ adapters) and that it lacks a 4-pin CPU power connector.

 
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