SKU: 68553996326

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

Sale price$49.49 Regular price$54.99
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

be quiet! System Power 11 550W is ATX 3.1 compliant and PCIe 5.1 compatible, 5-year manufacturer's warrantySYSTEM POWER 11 550W Proven Reliability, Quiet Operation System Power 11 is the ATX 3. 1 PSU for value oriented PC builders that do not want to pass on reliability and quietness. Highlights ATX 3. 1 PSU with support for PCIe 5. 1 GPUs and GPUs with 6+2 pin connectors Temperature controlled 120mm quality fan reduces system noise Rock solid stability with a strong 12V rail Tight voltage regulation using DC to DC technology Up to one PCIe 5. 1 12V 2x6

SYSTEM POWER 11 550W

Proven Reliability, Quiet Operation System Power 11 is the ATX 3.1 PSU for value-oriented PC builders that do not want to pass on reliability and quietness.

Highlights

ATX 3.1 PSU with support for PCIe 5.1 GPUs and GPUs with 6+2 pin connectors
Temperature-controlled 120mm quality fan reduces system noise
Rock-solid stability with a strong 12V-rail
Tight voltage regulation using DC-to-DC technology
Up to one PCIe 5.1 12V-2x6 600W and up to 3 PCIe 6-2 connectors for high-end GPUs
Dependable operation to support powerful GPUs
Stand-by drain of less than 0.15 watts
80 PLUS Bronze efficiency (up to 90.0 %)
5-year manufacturer’s warranty
Product conception, design and quality control in Germany

General

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 life time (h / 25°C)
>100,000

Operating temperature up to (°C)
40

Efficiency
80 PLUS certification
Efficiency (%) at 230V, 2% load64.4 Bronze
Efficiency (%) at 230V, 10% load 84.4 Bronze
Efficiency (%) at 230V, 20% load 88.6 Bronze
Efficiency (%) at 230V, 50% load 89.7 Bronze
Efficiency (%) at 230V, 100% load 86.6 Bronze

Fan and cooling technology

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

dB(A) at 10% load
10.4

dB(A) at 20% load
10.8

dB(A) at 50% load
11.0

dB(A) at 100% load
24.2

Output

Multi-rail operation (12V rails)
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 and connectors

Modular cables
No

Sleeved cables
P24

Flat cables
P4+4, P4, PCIe, drives

Maximum cable length (cm)
55

Cable length to motherboard (cm)
79

No. of cables
7

ATX-Motherboard (20+4-pin)
1

P4+4 (CPU)
1

P8 (CPU)
No

P4 (CPU)
1

12V-2x6 cables
1

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

PCI-e 6-pin (GPU)
No

SATA
5

PATA
1

FDD (Floppy)
No

Protection

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

Safety certification

BSMI
No

CB
No

CCC
No

CE
Yes

cRUus
No

cTUVus
No

CU
Yes

FCC
No

RCM
No

TUV
Yes

UKCA
Yes

IRAM
No

Environmental directives

ErP
Yes

WEEE
Yes

RoHS
Yes

Triman
No

Scope of delivery

Thumb screws
No

Screws
Yes

Cable ties
Yes

Velcro cable ties
No

User manual languages
No

OCK slot bracket with switch / OCK jumper
No

SFX-to-ATX adapter bracket
No

Casing

Dimensions without cable (L x W x H), (mm)
86 x 150 x 140

Weight (kg)
1.92

Color
Black

Logistics data and RRP

Dimensions, package (L x W x H), (mm)
268 x 195 x 97

Gross weight, package (kg)
2.3

Pieces per packaging unit
6

Dimensions, shipping box (L x W x H), (mm)
556 x 311 x 218

Gross weight, shipping box (kg)
14.9

Service

Warranty (Years)
5


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 68553996326

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 77 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Amazon Customer
Bozeman, US
★★★★★ 5
I love it for my workspace! Hot tea all day
Color: Wood Grain
I love this item. The size is perfect, as I prefer something less bulky for my work desktop. It isn't as fancy as others that has the digital display screen, which is fine by me, because I don't necessarily need that. The knob and different colors that indicate the temperature range works fine. The temperature on this thing works fantastically well for me. Using it on the lowest setting keeps my drink nice and hot in a cold office. I use a heatproof glass teapot with this and its a good fit. It keeps my tea hot throughout the day, so I am able to pour smaller amounts of drink and take my time sipping it throughout the day without worrying that it will get cold. At point I almost forgot that it has an automatic shut-off safety feature when I noticed it was off. So that is a good feature to have. I highly recommend this.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026
M
Verified Purchase
MB
Battle Creek, US
★★★★★ 4
Requires a very specific mug to be useful.
Color: Black
The hotplate itself gets hot enough on its highest setting where it would burn your finger if you left it one there for more then a couple seconds. However when it come to what mug you can use to transfer that heat to your drink, this WILL NOT work with just any old ceramic, metal or glass mugs. You absolutely need to have a perfectly flat bottom on it. If the center of the bottom of the mug does not make direct contact with the very center of the warmer, it will not transfer heat. So straight way plan of spending another $15 to $20. Amazon has some available with good reviews all be it not a very big selection. I'm giving this 4 stars because the description needs to be very clear about this and its not.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
K
Verified Purchase
Kevin Finn
Dallas, US
★★★★★ 5
Great mug warmer with temp control
Color: Black
I replaced a cheap mug warmer with a couple of these for the house, and for almost the same price this is a lot more functional. I really like the temperature control and silicone surface protector. In combination with the carafe below, this has changed my life - no more microwaving coffee all morning. https://www.amazon.com/GiNT-Stainless-Thermal-Thermos-Retention/dp/B07MW5N7MS
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
E
Verified Purchase
Esmeralda
Draper, US
★★★★★ 5
Super Satisfied Customer Here!
Color: Gold, Color: Gold
I purchased the gold/black mug warmer. I always spend a good about of money for great coffee products and I take my time to perfect my coffee for my mornings at work. However, I get pulled into urgent meetings and just something urgent and I always leave more than half of my coffee behind. When I come back it’s cold and that’s very disappointing considering the money and time I spent to make it bc I then have to toss it. I don’t believe in microwaves and I refuse to use one. When I found this, I was super excited! It looks perfect at my desk and it works perfect! I would have liked it to be more on the brass gold like my pen holder, but it’s just as pretty! As you can see, my mug had a layer on the bottom and that made me think it may not work well, but it did the job. My coffee was super warm and it got even hotter as I left it there tearing it. I turned it one before making my coffee, so I’m not sure exactly how long it took to warm up but for me, by the time I got back, it was the peg temperature. I highly recommend this to anyone who has the same struggles. No more cold coffees! Thank you!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2026
T
Verified Purchase
Timothy Mousseau
Port Orchard, US
★★★★★ 5
Neat gadget
Color: Gold
Neat little gadget. Works great, easy to use and has a light indicator for temperature range. Keeps a cup of liquid hot right to the bottom.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026

recommand products