be quiet! System Power 11 550W is ATX 3.1 compliant and PCIe 5.1 compatible, 5-year manufacturer's warranty

Name: be quiet! System Power 11 550W is ATX 3.1 compliant and PCIe 5.1 compatible, 5-year manufacturer's warranty
Brand: BEQUIET
Price: 81.00 GBP
Availability: OutOfStock

$81.00

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be quiet! System Power 11 550W is ATX 3.1 compliant and PCIe 5.1 compatible, 5-year manufacturer's warranty

$81.00

be quiet! System Power 11 550W ATX 3.1 Power Supply

The be quiet! System Power 11 550W is an ATX 3.1 power supply unit designed for value-oriented PC builders who demand proven reliability, quiet operation, and modern connectivity.

Key Features

ATX 3.1 power supply with support for PCIe 5.1 GPUs and GPUs with 6+2-pin connectors
Temperature-controlled 120 mm be quiet! fan for reduced system noise
Strong 12V single rail for rock-solid system stability
DC-to-DC technology for tight voltage regulation
GPU-ready connectivity
Up to one PCIe 5.1 12V-2x6 600W connector
Up to three PCIe 6+2-pin connectors for high-end GPUs
Dependable operation to support powerful graphics cards
Low stand-by drain of less than 0.15 W
80 PLUS Bronze efficiency (up to 90.0%)
5-year manufacturer’s warranty
Product conception, design and quality control in Germany

Technical Specifications

General

Specification	Detail
Model	System Power 11 550 W
Continuous power (W)	550
Peak power (W)	No
Form factor	Version 3.1
Form factor EPS 12V	Version 2.92
Topology	Double forward + DC-DC
Digitally controlled	No
Voltage (Vac)	200 – 240
Frequency (Hz)	50
Input current (A)	4
Power factor at 100% load	>0.98
Modern standby	Yes
Power consumption in standby (W)	<0.1
Average lifetime (h / 25°C)	>100,000
Operating temperature up to (°C)	40

Efficiency

Load Level (230 V)	Efficiency	Certification
2% load	64.4%	Bronze
10% load	84.4%	Bronze
20% load	88.6%	Bronze
50% load	89.7%	Bronze
100% load	86.6%	Bronze
80 PLUS certification	Bronze

Cooling & Acoustics

Specification	Detail
Cybenetics Noise Rating	No
Fan	Silence-optimized be quiet! fan
Fan size (mm)	120
Bearing technology	Rifle
Motor technology	4-pole fan motor
Max. fan speed (rpm)	1800
Noise level at 10% load dB(A)	10.4
Noise level at 20% load dB(A)	10.8
Noise level at 50% load dB(A)	11.0
Noise level at 100% load dB(A)	24.2

Output

Specification	Detail
Multi-rail operation (12V)	No
12V single rail operation	Yes
Overclocking key	No
+3.3V (A)	20
+5V (A)	20
+12V1 (A)	45.83
+12V2 (A)	No
+12V3 (A)	No
+12V4 (A)	No
+12V5 (A)	No
+12V6 (A)	No
-12V (A)	0.3
+5Vsb (A)	3
Max. combined power 12V (W)	550
Max. combined power 12V-2x6 (W)	300
Max. combined power 3.3V + 5V (W)	120
Hold-up time at 100% load (ms)	16.86
Hold-up time at 80% load (ms)	20.92
Power good signal (ms)	100 – 150

Cables & Connectors

Feature	Detail
Modular cables	No
Sleeved cables	P24
Flat cables	P4+4, P4, PCIe, drives
Maximum cable length (cm)	55
Cable length to motherboard (cm)	79
Number of cables	7

Connectors

Connector Type	Quantity
ATX 20+4-pin (motherboard)	1
P4+4 (CPU)	1
P8 (CPU)	No
P4 (CPU)	1
12V-2x6 cables	1
PCIe 6+2-pin (GPU)	2
PCIe 6-pin (GPU)	No
SATA	5
PATA	1
FDD (Floppy)	No

Protection Features

Protection Type	Available
OTP (Over Temperature Protection)	Yes
OCP (Over Current Protection)	Yes
OPP (Over Power Protection)	Yes
SCP (Short Circuit Protection)	Yes
OVP (Over Voltage Protection)	Yes
UVP (Under Voltage Protection)	Yes
SIP (Surge & Inrush Protection)	Yes

Certifications & Environmental Directives

Certification / Directive	Status
BSMI	No
CB	No
CCC	No
CE	Yes
cRUus	No
cTUVus	No
CU	Yes
FCC	No
RCM	No
TUV	Yes
UKCA	Yes
IRAM	No
ErP	Yes
WEEE	Yes
RoHS	Yes
Triman	No

Scope of Delivery

Item	Included
Thumb screws	No
Screws	Yes
Cable ties	Yes
Velcro cable ties	No
User manual languages	No
OCK slot bracket/jumper	No
SFX-to-ATX adapter	No

Casing & Dimensions

Specification	Detail
Dimensions without cable (L x W x H, mm)	86 x 150 x 140
Weight (kg)	1.92
Color	Black

Logistics

Specification	Detail
Package dimensions (L x W x H, mm)	268 x 195 x 97
Gross weight, package (kg)	2.3
Pieces per packaging unit	6
Shipping box dimensions (L x W x H, mm)	556 x 311 x 218
Gross weight, shipping box (kg)	14.9