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be quiet! Straight Power 11 550W 80 Plus Platinum Modular Power Supply UK Plug

be quiet! Straight Power 11 550W 80 Plus Platinum Modular Power Supply UK Plug

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Product Description

be quiet! Straight Power 11 550W 80 Plus Platinum Modular Power Supply UK Plug

World Class Quiet and Efficiency

be quiet! Straight Power 11 Platinum 550W raises the bar for systems that demand virtually inaudible operation and outstanding efficiency.


80 PLUS® Platinum certification with an outstanding efficiency of up to 93,8%

Virtually inaudible operation thanks to a Silent Wings 3 135mm fan

Big funnel-shaped fan opening of the PSU case for high airflow intake

Wire-free on the DC side inside the PSU for enhanced cooling and longevity

Modular cables for maximum build flexibility

Advanced stability and voltage regulation thanks to LLC, SR and DC-to-DC

Four high-performance 12V rails

Powerful multi-GPU support with two PCI-Express connectors

Japanese 105°C-rated capacitors ensure stability and reliability

Power signal stability unmatched in its class

ErP and Energy Star 7.0 ready

5-year manufacturer’s warranty

Product conception, design and quality control in Germany



Model - Straight Power 11 Platinum | 550W

Continuous power (W) - 550

Peak power (W) - 600

Form factor ATX 12V - Version 2.51

Modular cable management - Yes

Topology - LLC + SR + DC/DC

Wire-free design (DC-side) - Yes

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 - Yes

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

+3.3V (A) - 22

+5V (A) - 22

+12V1 (A) - 18

+12V2 (A) - 18

+12V3 (A) - 20

+12V4 (A) - 20

-12V (A) - 0.3

+5Vsb (A) - 3

Max. combined power 12V (W) - 549.6

Max. combined power 3.3V + 5V (W) - 110

Hold-up time (ms @ 100%) - 17,7

Power good signal - 100-150ms


Fan type - be quiet! Silent Wings 3

+SilentWings - Yes

Motor technology - 6-pole fan motor

Bearing technology - FDB

Fan size (mm) - 135

Max. fan speed (rpm), temperature-dependent - 1,200

dB(A) at 20% load - 9.0

dB(A) at 50% load - 9.6

dB(A) at 100% load - 14.9


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

TÜV - Yes

FCC - Yes

cTUVus - Yes

RCM (Australia) - Yes

BSMI - Yes

CU (Russia) - Yes

CCC - Yes


80 PLUS certification - Platinum

Efficiency (%) at 230V, 20% load - 92

Efficiency (%) at 230V, 50% load - 93,8

Efficiency (%) at 230V, 100% load - 92,8



ErP - Yes

WEEE - Yes

RoHS - Yes


Multi-GPU ready - Yes

Modular cable management - Yes

Fully modular - Yes

Sleeved cables - Yes

Cable length to mainboard (cm) - 60

Cable length to first connector (cm) - 55

Maximum cable length (cm) - 115

No. of cables - 8

ATX-Motherboard (20+4-pin) - 1

P4+4 (CPU) - 1

PCI-E 6+2-pin (GPU) - 2

PATA 4-pin - 3

SATA 15-pin (HDD, Drives) - 9

FDD (Floppy) - 1


Dimensions without cable (L x W x D) - 160 x 150 x 86mm

Weight (kg) - 1,7

Color - Black


Screws - Yes

Cable ties - Yes

User manual languages - EN, DE, FR, PL, ES, RU


Warranty (Years) - 5

Express replacement service in first year - DE, FR

International hotline / free of charge - Yes

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