Bequiet Stright Power 11 Platinium 850w Modular Power Supply BN308


In stock

SKU: TT-PSU-0129 Categories: ,

World Class Quiet and Efficiency

be quiet! Straight Power 11 Platinum 850W raises the bar for systems that demand virtually inaudible operation and outstanding efficiency.

  • 80 PLUS® Platinum efficiency (up to 94%)
  • Virtually inaudible Silent Wings 3 135mm fan
  • Funnel-shaped fan opening of the PSU case for high airflow intake
  • Wire-free inside the PSU on the DC side for enhanced cooling and longevity
  • Modular cables for maximum build flexibility
  • Four PCIe connectors for overclocked high-end GPUs
  • Japanese 105°C-rated capacitors ensure stability and reliability
  • ErP and Energy Star 7.0 ready


General data

Model Straight Power 11 Platinum 850W
Continuous power (W) 850
Peak power (W) 920
Form factor Version 2.51
Form factor EPS 12V Version 2.92
Modular cable management
Topology Full bridge + LLC + SR + DC/DC
Wire-free design (DC-side)
Voltage (Vac) 100 – 240
Frequency (Hz) 50 – 60
Input current (A) 10 / 5
PFC active
Power factor at 100% load >0.99
Compliant to Intel C6/C7
Power consumption in standby (W) 0.16
Average life time (h / 25°C) 100,000
Operating temperature up to (°C) 40


12V rails (multi-rail operation) 4
12V single rail operation
Overclocking key
+3.3V (A) 25
+5V (A) 25
+12V1 (A) 21
+12V2 (A) 21
+12V3 (A) 26
+12V4 (A) 26
+12V5 (A)
+12V6 (A)
-12V (A) 0.5
+5Vsb (A) 3
Max. combined power 12V (W) 849.6
Max. combined power 3.3V + 5V (W) 150
Hold-up time at 100% load (ms) 22
Power good signal 100 – 150ms

Fan / Cooling technology

Fan type Silent Wings 3
Motor technology 6-pole fan motor
Bearing technology FDB
Fan size (mm) 135
Max. fan speed (rpm), temperature-dependent 2100
Temperature control for case fans
dB(A) at 20% load 7.7
dB(A) at 50% load 7.9
dB(A) at 100% load 22


OCP (over current protection)
OVP (over voltage protection)
UVP (under voltage protection)
SCP (short circuit protection)
OTP (over temperature protection)
OPP (over power protection)
SIP (Surge & Inrush Protection)

Safety certification

RCM (Australia)
CU (Russia)

Eco / Efficiency

80 PLUS certification Platinum
Efficiency (%) at 230V, 20% load 92
Efficiency (%) at 230V, 50% load 94
Efficiency (%) at 230V, 100% load 92.7

Environmental directives


Cables / Connectors

Nvidia<sup>®</sup> SLI (RTX 3090) ready
Cable management Modular
Sleeved cables Sleeved cables
Flat cables
Cable length to mainboard (cm) 60
Cable length to first connector (cm) 55
Maximum cable le

Additional information

Weight 3.5 kg

Bequiet Stright Power 11 Platinium 850w Modular Power Supply BN308


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