Article number: BN634


500W CM

World Class Quiet and Efficiency

be quiet! Straight Power 10 500W CM provides a new level of silent performance for systems that demand whisper-quiet operation and efficiency without compromising on power quality.

Improved cooling with use of a 135mm SilentWings® 3 fan with an advanced fan frame ensures operation that is extraordinarily quiet.
Improved power circuit technology delivers 80PLUS® Gold power efficiency (up to 93%) and stability unmatched in its class.

User-friendly cable management, powerful GPU support and reliability enhanced by premium 105°C-rated parts make this PSU a ‘Best Choice’ whether you are building a new system or seeking a better, quieter replacement for an existing system.

  • Virtually inaudible operation achieved through a broad array of meticulous optimizations, including use of a be quiet! SilentWings® 3 135mm fan
  • SilentWings® 3 fan features an advanced fan frame, an airflow-optimized fan blade, fluid-dynamic bearing with copper core and a high-quality 6-pole motor for less vibration
  • The funnel-shaped fan opening of the PSU case is significant big and allows high airflow intake
  • 500 Watts of continuous power with stable four 12V-rail design
  • 80PLUS® Gold certification and up to 93% power conversion efficiency
  • Cable management with extra long cable reach simplifies component installation and reduces annoying clutter, increasing airflow and improving cooling in even the largest PC cases
  • Product conception, design and quality control in Germany

Virtually Inaudible Operation

  • Installed SilentWings® 3 135mm fan includes a wide array of electronic and mechanical optimizations for best-of-class airflow with very low noise production, including:
    • unique airflow-optimized fan blade design reduces noise-generating fan turbulence
    • advanced fluid-dynamic bearing with copper core provides for greatly reduced operating noise and super-long life
    • 6-pole fan motor with high-quality IC controller reduces electrical noise, power consumption, and vibration. Lower starting voltage of the fan reduces significantly the starting fan speed and noise level at low load conditions
  • Funnel-shaped fan opening of the PSU case is significant big and allows high airflow intake
  • SilentWings® 3 fan is decoupled from the PSU body with special mount, further reducing transmission of vibration and noise
  • Optimized PSU airflow design generates superior cooling at lower fan speeds and reduces turbulence around components, thus allowing even quieter operation
  • Variable fan speed is optimally governed to strike the best balance between proper cooling and deep quietness

Energy Efficiency

  • 80PLUS® Gold certification independently verifies the extremely high operating efficiency (up to 93%) of this design
  • High efficiency means money savings, because your PC draws less power from the mains to do its work. This means less waste heat, less cooling required, and overall quieter operation
  • Standby drain of less than 0.25 Watts (</= 0.15W)
  • Meets Energy Star 6.0 guidelines
  • Fulfills ErP 2014 guidelines
  • Zero Load design supports Intel’s Deep Power Down C6 and C7 modes


  • Improved integrated circuit power conversion design features Active Clamp and Synchronous Rectifier (SR) technology plus DC-to-DC voltage stepdown for amazing signal stability, voltage regulation (main output rails are </= 2%) and power efficiency
  • Premium quality capacitors rated to 105°C for maximum performance, reliability and operating life
  • Full suite of top safety protections defends against over-currents, over- and under-voltages, short circuits, overheating and overloads, thus safeguarding your valuable components
  • Four independent 12V-rails improve power signal stability

Maximum Compatibility and Convenience

  • Professional modular cable management system with removable cable bundles simplifies component installation, reduces annoying clutter, increases airflow and allows for improved cooling
  • Sleeved cable lengths up to 115 cm allow for improved cooling and are perfect for large PC cases
  • Connectors are compatible with older components as well as those still on the drawing board
  • Individual P4 and P8 plugs on longer cables support all common mainboard types and allow routing behind motherboards for improved airflow
  • Two PCIe connectors for powerful multi-GPU configurations
  • Clearly labeled plugs and clever accessories promote simple installation

Outstanding Service and Support

  • 5-year manufacturer's warranty
  • Quick support is available via our international hotline, Mondays to Fridays from 9:00am to 5:30pm CET : +49 (0) 40-736 76 86 – 98
All models at a glance:


General data

Continuous power (W) 500
Peak power (W) 550
Form factor ATX 12V Version 2.4
Form factor EPS 12V Version 2.92
Modular cable management
Topology Active Clamp + SR + DC/DC
Wire-free design (DC-side) -
Voltage (Vac) 100 - 240
Frequency (Hz) 50 - 60
Input current (A) 8 / 4
PFC active
Power factor at 100% load >0.99
Compliant to Intel C6/C7
Power consumption in standby (W) <0.15
Average life time (h / 25°C) 100.000
Operating temperature up to (°C) 40


open all / close all


12V rails (multi-rail operation) 4
12V single rail operation -
Overclocking key -
+3.3V (A) 24
+5V (A) 24
+12V1 (A) 18
+12V2 (A) 18
+12V3 (A) 18
+12V4 (A) 18
+12V5 (A) -
+12V6 (A) -
-12V (A) 0.3
+5Vsb (A) 3
Max. combined power 12V (W) 480
Max. combined power 3.3V + 5V (W) 130
Hold-up time (ms @ 100%) 17

Fan / Cooling technology

Fan type be quiet! SilentWings 3
Motor technology 6-pole fan motor
Bearing technology FDB
Fan size (mm) 135
Max. fan speed (rpm), temperature-dependent 1,200
Temperature control for case fans -
dB(A) at 20% load 10.3
dB(A) at 50% load 10.7
dB(A) at 100% load 15


OCP (over current protection)
OVP (over voltage protection)
UVP (under voltage protection)
SCP (short circuit protection)
OTP (over temperature protection)
OPP (over power protection)

Safety certification

Nemko (N) -
Semko (S) -
Fimko (FI) -
Demko (D) -
cRUus -
RCM (Australia) -
CU (Russia) -

Eco / Efficiency

80PLUS certification Gold
Efficiency (%) at 230V, 20% load -
Efficiency (%) at 230V, 50% load -
Efficiency (%) at 230V, 100% load -

Environmental directives


Cable management / Connectors

Multi-GPU ready
Modular cable management
Fully modular -
Sleeved cables
Flat cables -
Cable length to mainboard (cm) 60
Cable length to first connector (cm) 55
Maximum cable length (cm) 115
All-in-one cable (SATA/PATA/FDD)
No. of cables 7
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 3
SATA 15-pin (HDD, Drives) 9
FDD (Floppy) 1
External fan connectors -


Dimensions without cable (L x W x D), (mm) 160 x 150 x 86
Weight (kg) 2.18
Color black


Thumb screws -
Cable ties
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 DE, FR
International hotline / free of charge ✓ / DE, FR

Logistics data, RRP

Range Straight Power
Article number BN634
EAN code 4260052183939
Dimensions, package (L x W x H), (mm) 328 x 248 x 102
Gross weight, package (kg) 2.77
Pieces per packaging unit 6
Dimensions, shipping box (L x W x H), (mm) 661 x 282 x 358
Gross weight, shipping box (kg) 18.38
RRP (€) 110.00

Article number: BN634



Compatible accessories

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