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be quiet! Straight Power 12 Platinum Modular 1500W Power Supply

BN735 | be quiet!
In stock
Buy now, pay later!
On sale! (normally $569) The be quiet! Straight Power 12 PSU is equipped with a Silent Wings 135mm fan, is 80 PLUS platinum-certified, 1500W capacity, full modular cable management, and Japanese 105-degree capacitors to ensure the highest stability and reliability.


Straight Power 12 - 1500W

World Class Quiet and Efficiency

Straight Power 12 is a future-proof ATX 3.0 power supply with 80 PLUS® Platinum certification and virtually inaudible operation.

  • 80 PLUS Platinum efficiency (up to 93.9%)
  • ATX 3.0 PSU with full support for PCIe 5.0 GPUs and GPUs with 6+2 pin connectors
  • Handles massive power excursions
  • Virtually inaudible Silent Wings 135mm fan
  • Funnel-shaped fan opening on PSU case for high airflow intake
  • Full bridge LLC technology for unmatched signal stability
  • One massive high-performance 12V-rail
  • Japanese 105°C capacitors ensure highest stability and reliability
  • Modular cable management for maximum convenience

80 Plus® Platinum Certified

Highly Efficient Operation

Straight Power 12 1500W is certified with 80 PLUS Platinum and an energy efficiency rating of up to 93.9%. This provides lots of benefits for your high-end system, including less power consumption and an overall cooler and quieter operation.

Future-Proof Your System

Fulfils All ATX 3.0 Specifications

Straight Power 12 1500W is an ATX 3.0 PSU and comes with both native integration of 2 12VHPWR connectors for next-generation PCIe 5.0 graphics cards, and 4 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! Straight Power 12 1500W AU Power Supply - Black Feature 1

The New Standard of Power

For Massive Transient Loads

Straight Power 12 offers 1500W of continuous power with one massive 12V rail. Even if the graphics card demands excessive power for a short time: Straight Power 12 1500W 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! Straight Power 12 1500W AU Power Supply - Black Feature 2

Silent Wings Fan

Provides Virtually Inaudible Operation

The high-end Silent Wings fan delivers best-of-class airflow yet produces very little noise. This is thanks to its unique, optimized fan blade design along with an advanced fluid-dynamic bearing and 6-pole fan motor that largely eliminates operational noise, has a super-long life and minimal power consumption.

be quiet! Straight Power 12 1500W AU Power Supply - Black Feature 3

Flawless Cooling Concept

For a Longer Lifespan

The funnel-shaped fan inlet of the Straight Power 12 1500W increases airflow while reducing unwanted turbulence for a higher cooling performance. The wire-free design inside allows the cool air to reach all components which ultimately leads to a longer lifespan.

be quiet! Straight Power 12 1500W AU Power Supply - Black Feature 4

State-of-the-Art Technologies

Rock-Steady Signal Stability and Efficiency

With full bridge LLC Straight Power 12 1500W offers advanced technologies, resulting in higher efficiency, better regulation and lower ripple noise for an incomparably stable operation.

be quiet! Straight Power 12 1500W AU Power Supply - Black Feature 5

Japanese 105°C Capacitors

A Testament to High Quality

Only premium components are used in Straight Power 12 1500W. That is why this PSU features exclusively high-quality Japanese capacitors. They are rated at 105°C for stability, reliability, and a long operating life.

be quiet! Straight Power 12 1500W AU Power Supply - Black Feature 6

Convenience and Connectivity

Maximum Utility

Modular, sleeved cables of up to 100cm in length simplify component installation and reduce annoying clutter. This results in increased airflow and improved cooling - even in the largest PC cases.


General Data

Model Number BN735
Model Straight Power 12 1500W
Continuous Power (W) 1500
Peak Power (W) 1570
Form Factor Version 3.0
Form Factor EPS 12V Version 2.92
Topology Full bridge + LLC + SR + DC / DC
Voltage (Vac) 110 - 240
Frequency (Hz) 50 - 60
Input Current (A) 15 / 9
Power Factor at 100% Load >0.99
Modern Standby Yes
Power Consumption in Standby (W) <0.15
Average Life Time (h / 25°C) >100,000
Operating Temperature Up to (°C) 40


80 Plus Certification Platinum
Efficiency (%) at 230V, 2% Load 65.0
Efficiency (%) at 230V, 10% Load 90.5
Efficiency (%) at 230V, 20% Load 93.1
Efficiency (%) at 230V, 50% Load 93.9
Efficiency (%) at 230V, 100% Load 91.9

Fan and Cooling Technology

Fan Silent Wings
Fan Size (mm) 135
Bearing Technology FDB
Motor Technology 6-pole fan motor
Max. Fan Speed (rpm) 2600
dB(A) at 10% Load 9
dB(A) at 20% Load 9
dB(A) at 50% Load 12.7
dB(A) at 100% Load 36.4


12V Single Rail Operation Yes
+3.3V (A) 25
+5V (A) 25
+12V1 (A) 125
-12V (A) 0.5
+5Vsb (A) 3
Max. Combined Power 12V (W) 1500
Max. Combined Power 12VHPWR (W) 1000
Max. Combined Power 3.3V + 5V (W) 150
Hold-Up Time at 100% Load (ms) 20.6
Power Good Signal (ms) 100 - 150

Cables and Connectors

Modular Cables Yes
Sleeved Cables Yes
Maximum Cable Length (cm) 100
Cable Length to Motherboard (cm) 60
No. of Cables 10
ATX-Motherboard (20+4-Pin) 1
P4+4 (CPU) 1
P8 (CPU) 1
12VHPWR Cables 2
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, KR


Dimensions without Cable (L x W x H), (mm) 180 x 150 x 86
Weight (kg) 2.12
Colour Black


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

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