DeepCool PN850D ATX v3.1 PSU Review

Efficiency Normal, Light & Super-Light Loads

The average efficiency is satisfactory at normal and light loads but doesn’t exceed 70% with a 2% load.

Average Efficiency

The platform’s average efficiency is satisfactory.

Average PF

The APFC converter needs fixing to deliver higher power factor readings.

Average Efficiency 5VSB

The 5VSB rail isn’t so efficient.

Vampire Power

Vampire power is low enough at 115V but above 0.1W at 230V.

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4 thoughts on “DeepCool PN850D ATX v3.1 PSU Review

  1. Hi Aris. Please look with more attention on PCB back side, is a broken copper circuit (close to D20). How is that possible? Protection circuit not working on all voltage rail?

  2. Thanks as always for the review, Aris! This unit appears to be similar to the PM-D except with Deepcool’s square grille pattern; the PM-D has been very affordable in many countries, so it is good to see that it is decent enough to use.
    The idea of somewhat budget, high-power and ATX 3.x compatible PSUs is interesting to me because, at least in my mind, by the time you have a 3090 or something else that might justify getting an 850W power supply, your PC should be high end enough that the extra $20-30 for something like the excellent PX-G line might not matter.
    Still, I think that especially in the future, there might be a niche for these, as once the 3090 and 3090 ti become older, they will become more available on the used market, which will make them promising midrange options that will still have the same power requirements. I think that something like this can fill that niche very nicely.

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