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Black rectangular ATX power supply unit with 120mm fan and modular cable sockets

be quiet!

be quiet! Pure Power 13 M 850W ATX 3.1 PCIe 5.1 power supply BP027US

SKU CH-DZ6K-DQ4N2 MPN BP027US

ATX 3.1 and PCIe 5.1 compatible 850W PSU with 80 Plus Gold efficiency, semi-passive 120mm fan, one 12V-2x6 600W and four 6+2 pin connectors

  • Max wattage850 W
  • Fan configuration1 × 120 mm
  • Power factor correctionActive
  • Efficiency certification80 PLUS GOLD Certified
  • Connection types2 x PATA / 6 x SATA
  • Product colorBlack

Type Pure Power 13 850W Gold

  • 80 PLUS Gold efficiency up to 94.4% cuts energy waste and heat
  • ATX 3.1 and PCIe 5.1 support prepares the system for modern GPUs
  • Semi-passive 120 mm fan stays silent under light loads
  • Single 12 V rail delivers stable power to demanding components
  • PCIe 5.1 12V-2x6 600 W plus four 6+2 connectors handle high-end graphics cards

Pure Power 13 M 850W ATX 3.1 PSU

This power supply delivers 850 W of continuous output for high-end desktop builds. It meets the ATX 3.1 specification and includes a PCIe 5.1 12V-2x6 connector rated for 600 W. The unit is designed for gamers and creators who need stable power for modern graphics cards.

Modular design with four PCIe 6+2 cables

A fully modular cable set lets builders attach only the leads they need, reducing clutter inside the case. Four PCIe 6+2 connectors support additional GPUs or power-hungry add-in cards. Six SATA connectors handle multiple drives, while two legacy PATA plugs remain for older peripherals.

Semi-passive 120 mm fan under sustained load

The temperature-controlled 120 mm fan stays idle at low power draw and spins up only when internal temperatures rise. LLC resonant topology and a single 12 V rail keep voltage regulation tight during extended gaming or rendering sessions. 80 PLUS Gold certification at up to 94.4 % efficiency limits waste heat, helping the fan run slower for longer periods.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $110.99
Cheaper than about 63% of the 10,869 comparable items (median $142.99).
Max wattage 850 W
Typical for this category: the median of 930 items is 850 W.

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Specifications

Product
Brand namebe quiet
Model nameBP027US
Part numberBP027US
Product colorBlack
Product typeTemperature-controlled quality fan
Ports & slots
Connection types2 x PATA / 6 x SATA
Power
Max wattage850 W
Power factor correctionActive
Efficiency certification80 PLUS GOLD Certified
Size & build
Shipping weight3.15 kg
Package size292 × 203 × 102 mm
More details
Fan configuration1 × 120 mm

Other versions of this model

3 more in the same range

Questions about this item

At what load does the 12 V rail hit its 850 W limit during sustained operation?

The single 12 V rail is rated for 850 W continuous output, so the limit is reached when total system draw approaches that figure.

How loud and hot does the 120 mm fan run in semi-passive mode after hours of full load?

The fan stays off at low load and spins up only when needed, keeping noise and temperature low even during extended high-load sessions.

Which GPU power cables must my graphics card already support to use the 600 W 12V-2x6 connector?

Your GPU needs a native 12V-2x6 or 12VHPWR input; the PSU also includes four 6+2 pin PCIe connectors for cards that still use them.

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