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be quiet! Pure Power 12 M Gold Modular 1200W Power Supply

BN729 | be quiet!
In stock
Buy now, pay later!
The be quiet! Pure Power 12 M PSU is equipped with a silent 120mm fan, is 80 PLUS gold-certified, 1200W capacity, full modular cable management, is ATX 3.0 compatible with full support for PCIe 5.0 GPUs, and GPUs with 6+2 pin connectors.


Pure Power 12 M - 1200W

Exceptional Quiet, Superior Features

Pure Power 12 M 1200W is ATX 3.0 compliant and PCIe 5.0 compatible and offers peerless dependability with best-in-class features. Pure Power 12 M 1200W offers the best combination of features with outstanding compatibility.

  • 80 PLUS® Gold efficiency (up to 93.7%)
  • ATX 3.0 PSU with full support for PCIe 5.0 GPUs and GPUs with 6+2 pin connectors
  • Exceptionally silent 120mm be quiet! fan
  • Advanced stability and voltage regulation thanks to LLC technology
  • 2 strong 12V-rails
  • Modular cables for maximum build flexibility
  • One PCIe 5.0 12VHPWR 600W and 4 PCIe 6+2 connectors for overclocked high-end GPUs

80 Plus® Gold Certified

Very High Operating Efficiency

Pure Power 12 M 1200W is certified 80 PLUS Gold with an outstanding efficiency rating of up to 93.7%. The most compelling benefit: lower power consumption, consequently lower costs, and above all a cooler as well as quieter operation. Pure Power 12 M 1200W is always the correct choice for quiet systems and gaming PCs!

be quiet! Pure Power 12 M 1200W AU Power Supply - Black Feature 1

Future-Proof Your System

Fulfils All ATX 3.0 Specifications

Pure Power 12 M 1200W is an ATX 3.0 PSU and comes with both native integration of the 12VHPWR connector for next-generation PCIe 5.0 graphics cards, and PCIe 6+2-pin connectors for support of current-gen GPUs. This makes the PSU extremely versatile and the perfect choice for powerful systems of today and the ones to come.

be quiet! Pure Power 12 M 1200W AU Power Supply - Black Feature 2

The New Standard of Power

For Massive Transient Loads

Pure Power 12 M offers 1200W of continuous power with 2 independent 12V rails. Even if the graphics card demands excessive power for a short time: Pure Power 12 M 1200W handles power excursions up to double its rated power with ease. This ensures reliable operation with the next generation of processors and graphics cards.

be quiet! Pure Power 12 M 1200W AU Power Supply - Black Feature 3

Exceptionally Silent Operation

Achieved with a Silence-Optimized be quiet! Fan

The exceptionally silent 120mm be quiet! fan is temperature-controlled to strike the best balance between effective cooling and quietness. Airflow-optimized fan blades reduce turbulence, enabling best-in-class quiet functionality.

be quiet! Pure Power 12 M 1200W AU Power Supply - Black Feature 4

High-Class Technologies

Rock-Solid Stability

With its LLC topology Pure Power 12 M 1200W provides a best-in-class voltage regulation and efficiency. That makes it perfect for building very quiet systems or upgrading gaming and media creation PCs.

be quiet! Pure Power 12 M 1200W AU Power Supply - Black Feature 5

Modular Cables

Utmost Convenience and Compatibility

Thanks to their modularity, all unnecessary cables in the system are left out. Pure Power 12 M 1200W simplifies cable management and routing for a tidy-looking system. A smoother airflow results from the uncluttered layout of the system, which means lower noise and temperatures inside the case.


General Data

Model Number BN729
Model Pure Power 12 M 1200 W
Continuous Power (W) 1200
Peak Power (W) 1250
Form Factor Version 3.0
Form Factor EPS 12V Version 2.92
Topology LLC + SR + DC / DC
Voltage (Vac) 110 - 240
Frequency (Hz) 50 - 60
Input Current (A) 15 / 7.5
Power Factor at 100% Load >0.98
Modern Standby Yes
Power Consumption in Standby (W) <0.12
Average Life Time (h / 25°C) >100,000
Operating Temperature Up to (°C) 40


80 Plus Certification Gold
Efficiency (%) at 230V, 2% Load 72.9
Efficiency (%) at 230V, 10% Load 89
Efficiency (%) at 230V, 20% Load 92.7
Efficiency (%) at 230V, 50% Load 93.7
Efficiency (%) at 230V, 100% Load 91.5

Fan and Cooling Technology

Fan Silence-optimized be quiet! fan
Fan Size (mm) 120
Bearing Technology Rifle
Motor Technology 4-pole fan motor
Max. Fan Speed (rpm) 2700
dB(A) at 10% Load 10.1
dB(A) at 20% Load 10.6
dB(A) at 50% Load 10.7
dB(A) at 100% Load 34.3


Multi-Rail Operation (12V Rails) 2
+3.3V (A) 22
+5V (A) 22
+12V1 (A) 55
+12V2 (A) 50
-12V (A) 0.3
+5Vsb (A) 3
Max. Combined Power 12V (W) 1200
Max. Combined Power 12VHPWR (W) 600
Max. Combined Power 3.3V + 5V (W) 120
Hold-Up Time at 100% Load (ms) 19
Power Good Signal (ms) 100 - 150

Cables and Connectors

Modular Cables Yes
Sleeved Cables 20+4 pin
Flat Cables P4+4, P8, PCIe, drives
Maximum Cable Length (cm) 95
Cable Length to Motherboard (cm) 55
No. of Cables 8
ATX-Motherboard (20+4-Pin) 1
P4+4 (CPU) 1
P8 (CPU) 1
12VHPWR Cables 1
PCI-e 6+2-pin (GPU) 4


OTP (Over Temperature Protection) Yes
OCP (Over Current Protection) Yes
OPP (Over Power Protection) Yes
SCP (Short Circuit Protection) Yes
OVP (Over Voltage Protection) Yes
UVP (Under Voltage Protection) Yes
SIP (Surge & Inrush Protection) Yes

Safety Certification

CB Yes
CE Yes
cTUVus Yes
CU Yes

Environmental Directives

Energy Star 8
ErP Yes
RoHS Yes
Triman Yes

Scope of Delivery

Screws Yes
Cable Ties Yes
User Manual Languages CN, DE, EN, ES, FR, JP, PL, RU, TW


Dimensions without Cable (L x W x H), (mm) 160 x 150 x 86
Weight (kg) 1.92
Colour Black


Warranty (Years) 10
International Hotline / Free of Charge Yes / DE, FR
Backed by a 10-year be quiet! warranty.

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