STRAIGHT POWER 11

450W

World Class Quiet and Efficiency

be quiet! Straight Power 11 450W raises the bar for systems that demand virtually inaudible operation without power quality compromises.

  • 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
  • 80 PLUS® Gold efficiency (up to 93%)
  • 2 PCIe connectors for powerful GPUs
  • Japanese 105°C-rated capacitors ensure stability and reliability
  • ErP and Energy Star 6.1 ready
  • 5-year manufacturer’s warranty
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SILENT WINGS 3 FAN

Provides virtually inaudible operation

The high-end Silent Wings 3 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.

FUNNEL-SHAPED FAN OPENING

Higher cooling performance

The fan inlet of the Straight Power 11 450W is funnel-shaped. It causes an increased throughput of air which benefits to a higher cooling performance.

WIRE-FREE INSIDE THE PSU

Pushing the longevity of components to a maximum

An absolute innovation: The Straight Power 11 450W is wire-free on the DC side inside the PSU body. This results in improved cooling airflow and less signal disturbance, simply because of a lack of wiring, and ultimately pushes the lifetimes of the components to a maximum.

MODULAR CABLES

Utmost convenience and compatibility

Thanks to the fully modular cable management, cables that serve no purpose in the system are left out. For this reason systems always appear very tidy. At the same time installation is performed much more conveniently. A smoother airflow results from the uncluttered layout of the system, which means lower noise and temperatures prevail inside the case.

80 PLUS® GOLD CERTIFIED

Impressively high efficiency

Straight Power 11 450W is certified with 80 PLUS Gold efficiency, reaching up to 93%. This gives less power consumption and a cooler and quieter operation. Truly a benefit for any system.

HIGH-CLASS TECHNOLOGIES

Compatibility for the systems of tomorrow

The use of LLC and Synchronous Rectifier (SR) provides very stable operation and enhanced voltage regulation.The PSU is equipped with DC-to-DC conversion for tight voltage regulation even under heavy cross-loading conditions. This ensures reliable operation with the next generation of processors and graphics cards.

JAPANESE 105° CAPACITORS

A testament to high quality

Only the best components are used in Straight Power 11 450W. That is why we have built only high-quality Japanese capacitors into the PSU chassis. They are rated to 105°C, ensuring stability, reliability and a long operating life.

“With Straight Power we are aiming for sophisticated users and PC builders. We understand Straight Power as the PSU of choice for all who are not dependent on the sheer overwhelming feature set of a Dark Power, yet do not want to miss out on premium technology.” 

Christian Joppien, Head of Global Product Management

All models at a glance:

Product Series

General data

ModelStraight Power 11 450W
Continuous power (W)450
Peak power (W)500
Form factorVersion 2.4
Form factor EPS 12V-
TopologyLLC + SR + DC/DC
Digitally controlled-
Voltage (Vac)100 - 240
Frequency (Hz)50 - 60
Input current (A)6 / 3
Power factor at 100% load>0.99
Modern standby-
Power consumption in standby (W)<0.12
Average life time (h / 25°C)100,000
Operating temperature up to (°C)40

Infographics

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Efficiency

80 PLUS certificationGold
Efficiency (%) at 230V, 2% load-
Efficiency (%) at 230V, 10% load86.6
Efficiency (%) at 230V, 20% load91
Efficiency (%) at 230V, 50% load93.1
Efficiency (%) at 230V, 100% load91.7

Fan and cooling technology

FanSilent Wings 3
Fan size (mm)135
Bearing technologyFDB
Motor technology6-pole fan motor
Max. fan speed (rpm)1200
dB(A) at 10% load9.3
dB(A) at 20% load9.4
dB(A) at 50% load9.8
dB(A) at 100% load12.3

Output

Multi-rail operation (12V rails)4
12V single rail operation-
Overclocking key-
+3.3V (A)24
+5V (A)24
+12V1 (A)18
+12V2 (A)18
+12V3 (A)19
+12V4 (A)19
+12V5 (A)-
+12V6 (A)-
-12V (A)0.3
+5Vsb (A)3
Max. combined power 12V (W)450
Max. combined power 12VHPWR (W)0
Max. combined power 3.3V + 5V (W)120
Hold-up time at 100% load (ms)20
Hold-up time at 80% load (ms)-
Power good signal (ms)100 - 500

Cables and connectors

Modular cables
Sleeved cables
Flat cables-
Maximum cable length (cm)115
Cable length to motherboard (cm)60
No. of cables8
ATX-Motherboard (20+4-pin)1
P4+4 (CPU)1
P8 (CPU)-
P4 (CPU)-
12VHPWR cables0
PCI-e 6+2-pin (GPU)2
PCI-e 6-pin (GPU)-
SATA8
PATA3
FDD (Floppy)1

Protection

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

Safety certification

BSMI
CB
CCC
CE
cRUus-
cTUVus
CU
FCC
RCM
TÜV
UKCA-

Environmental directives

Energy Star6.1
ErP
WEEE
RoHS
Triman

Scope of delivery

Thumb screws-
Screws
Cable ties
Velcro cable ties-
User manual languagesDE, EN, ES, FR, PL, RU
OCK slot bracket with switch / OCK jumper-
SFX-to-ATX adapter bracket-

Casing

Dimensions without cable (L x W x H), (mm)160 x 150 x 86
Weight (kg)2.08
ColorBlack

Service

Warranty (Years)5
Express replacement service in first yearDE, FR
International hotline / free of charge✓ / DE, FR

Logistics data and RRP

Article numberBN280
EAN code4260052185759
Dimensions, package (L x W x H), (mm)328 x 248 x 102
Gross weight, package (kg)2.74
Pieces per packaging unit6
Dimensions, shipping box (L x W x H), (mm)651 x 282 x 346
Gross weight, shipping box (kg)17.79
RRP (€)105.00

Upgrade Check

You are already using a be quiet! power supply and want to upgrade your system with a new STRAIGHT POWER 11 | 450W ? Check here which cables are compatible and don't need to be replaced.

Previous power supply

STRAIGHT POWER 11 | 450W
Article number: BN280

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