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BeQuiet Dark Power Pro 10 1200W PSU Review

This fan is an upgrade on the model in the 850W (BQT T13525-XF20).

The 135mm SilentWings 2 fan (BQT T13525-XF28) is used in the 1200W model.

This fan is a fluid dynamic bearing model with copper core. The fan is decoupled from the case which helps reduce vibrations and subsequent noise. The fan is rated to deliver up to 120cfm, while demanding 6W of power. The maximum speed is rated to 2,800 rpm (XF20 in the 850W is rated to 2,000rpm).

This is a Seasonic Full Bridge design. Full bridge describes the number of MOFSET’s used in the PWM Stage of the block diagram (see above). The MOSFETs are responsible for creating high frequency alternating current, which offers the best efficiency for the main transformation.

Half Bridge power supplies use two MOSFETs, which is perfect for lower wattages. Doubling the number of MOSFETs to four helps to reduce the load on every one of them, which is important for higher wattage units. The daughter PCB contains a control IC for the protection circuitry. The EMC/EMI filter is set to ensure immunity from radiation and conducted emissions.

The Dark Power Pro 10 also features zero voltage switching and zero current switching technology, which captures power “lost” by other topologies.

The DC to DC daughter PCB handles the conversion to 3.3V and 5V from the 12V DC. Next to the main transformer is the OPP control coil for current detection.

The three primary capacitors are 390uF, 420V – there are two of these in the 850W model. All of the capacitors in the unit are Japanese high grade, 105c rated.

The power supply has OCP (over current protection), UVP (Undervoltage protection), OVP (Overvoltage protection), SCP (Short Circuit safeguard), OTP (Temperature Safeguard) and OPP (overload protection).

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8 comments

  1. MEGA – that looks great too. slightly out of my price league, but the SLI hardcore gamers with watercooling kits etc will love this. cant believe you built a real world system which took over 900W! wicked.

  2. no stock in ARIA right now, had to get it from SCAN. thanks, good review.

  3. Its a hell of a showcase, but no one, i mean no one needs one of these. 1000W is the maximum anyone could need. as shown on the closing page.

  4. @ Diggler, actually you need to look into the point that a power supply maximum efficiency is around 50 percent load. so if your system hits around 600-700w, then this is ideal. if you can afford the extra cost.

  5. overkill. but yea, impressive.

    Seasonic make their own dont they? I think I saw their 1200W on scan recently too. must be the same, right?

  6. Another excellent power supply from bequiet. good review, thanks.

  7. @James The basic design will come from seasonic, but be-quiet will change it and adapt it to their needs. So you could say that they are similar, but not identical. I favor be-quiet over seasonic, because they expand the basic build from seasonic and combine it with additional features. I tried to think about, which PSU to take, enermax, seasonic or be-quiet, and now I’m pretty sure that it will be the be-quiet one.

  8. I have used youre psu in build’s in the past.Would love to have one in my build.