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BeQuiet! pure power 11 400W CM PSU/Power Supply

400W, Semi-Modular, 80 Plus Gold, up to 13.9dBA, 120mm Fan, Rifle Bearing, Active PFC, 5 Year Warranty

BeQuiet! pure power 11 400W CM PSU/Power Supply
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£54.98 inc vat

£45.82 ex vat

You save £5.00

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Order Code: BQ-BN296

Manf.Code: BN296

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BeQuiet! pure power 11 400W CM PSU/Power Supply overview


Pure Power 11 400W is certified 80 PLUS Gold with an efficiency rating of up to 92% – a truly outstanding level for this class of PSU. The most compelling benefit: lower power consumption and consequently lower costs, and cooler, quieter operation.


Pure Power 11 CM offers 400W of continuous power with two independent 12V rails for signal stability and two PCI express connectors for multi-GPU systems. It is suited to very quiet systems, for upgrading or building multimedia or multi-GPU gaming systems.


The use of Active Clamp and Synchronous Rectifier technologies provides very stable operation. The PSU is equipped with DC-to-DC conversion for even tighter voltage regulation under heavy cross-loading conditions. This ensures secure operation for next generation processors and graphics cards.


The silence-optimized 120mm be quiet! fan is thermally governed to strike the best balance between effective cooling and quietness. Airflow-optimized fan blades reduce turbulence, enabling best-in-class quiet functionality and the almost inaudible operation that be quiet! is famous for.


Pure Power 11 400W CM is certainly eye-catching. The modular cable management is enhanced with premium black, sleeved cables. The flat cables used for the PCI-express connection and drives simplify installation as well as keeping the system tidy.

Model Pure Power 11 | 400W CM
Continuous power (W) 400
Peak power (W) 450
Form factor ATX 12V Version 2.4
Form factor EPS 12V -
Modular cable management Yes
Topology Active Clamp + SR + DC/DC
Wire-free design (DC-side) -
Voltage (Vac) 100 - 240
Frequency (Hz) 50 - 60
Input current (A) 6 / 4
PFC active
Power factor at 100% load >0.99
Compliant to Intel C6/C7 Yes
Power consumption in standby (W) 0.21
Average life time (h / 25°C) 100000
Operating temperature up to (°C) 40
12V rails (multi-rail operation) 2
12V single rail operation -
Overclocking key -
+3.3V (A) 24
+5V (A) 15
+12V1 (A) 24
+12V2 (A) 20
+12V3 (A) -
+12V4 (A) -
+12V5 (A) -
+12V6 (A) -
-12V (A) 0.3
+5Vsb (A) 3
Max. combined power 12V (W) 384
Max. combined power 3.3V + 5V (W) 120
Hold-up time (ms @ 100%) 28
Fan type Silence-optimized be quiet! fan
+SilentWings -
Motor technology 4-pole fan motor
Bearing technology Rifle
Fan size (mm) 120
Max. fan speed (rpm), temperature-dependent 850
Temperature control for case fans -
dB(A) at 20% load 9.4
dB(A) at 50% load 9.9
dB(A) at 100% load 13.9
OCP (over current protection) Yes
OVP (over voltage protection) Yes
UVP (under voltage protection) Yes
SCP (short circuit protection) Yes
OTP (over temperature protection) Yes
OPP (over power protection) Yes
CE Yes
CB Yes
Nemko (N) -
Semko (S) -
Fimko (FI) -
Demko (D) -
cRUus -
cTUVus Yes
RCM (Australia) Yes
CU (Russia) Yes
80PLUS certification Gold
Efficiency (%) at 230V, 20% load 89.6
Efficiency (%) at 230V, 50% load 91.7
Efficiency (%) at 230V, 100% load 90.0
ErP Yes
RoHS Yes
Multi-GPU ready Yes
Modular cable management Yes
Fully modular -
Sleeved cables Yes
Flat cables PCIe, drives
Cable length to mainboard (cm) 45
Cable length to first connector (cm) 45
Maximum cable length (cm) 90
All-in-one cable (SATA/PATA/FDD) Yes
No. of cables 5
ATX-Motherboard (20+4-pin) 1
P8 (CPU) -
P4+4 (CPU) 1
P4 (CPU) -
PCI-E 6-pin (GPU) -
PCI-E 6+2-pin (GPU) 2
PATA 4-pin 2
SATA 15-pin (HDD, Drives) 5
FDD (Floppy) 1
External fan connectors -
Dimensions without cable (L x W x D), (mm) 160 x 150 x 86
Weight (kg) 1.94
Color Black
Thumb screws -
Screws Yes
Cable ties Yes
Velcro cable ties -
Box/Bag for PSU/Cables -
User manual languages EN, DE, FR, PL, ES, RU
OCK slot bracket with switch / OCK jumper -
SFX-to-ATX adapter bracket -
Warranty (Years) 5
Express replacement service in first year -
International hotline / free of charge Yes / DE, FR
Article number BN296
EAN code 4260052186374
Dimensions, package (L x W x H), (mm) 240 x 210 x 96
Gross weight, package (kg) 2.23
Pieces per packaging unit 6
Dimensions, shipping box (L x W x H), (mm) 514 x 326 x 241
Gross weight, shipping box (kg) 14.54

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Reviews of the BeQuiet! pure power 11 400W CM PSU/Power Supply