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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 550WProven 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:
- 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
4.7 ★★★★★
Based on 11 reviews
Sort
Product Reviews
★★★★★ 3
Less than 30 min
Color: Blue, Color: Blue
Bought for my 8 month old lab. Dog toy said for aggressive chewers. Wrong! Super cute and feels heavy duty, but not for aggressive chewers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 14, 2025
★★★★★ 5
Good for aggressive chewers!
Color: Blue
Smelled awful out of the package and it's way heavier that I expected, but it's one of the only toys that my puppy has not shredded to pieces.
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Reviewed in the United States on May 8, 2026
★★★★★ 4
Solid Toy NOT For Small Breeds
Color: Blue, Color: Blue
Bought this for my Pug puppy because he's always chewing on our shoes and dragging them outside and in every which direction. He doesn't really damage them, it's more of just a pain to chase him around and try and actually get the shoe from him because he thinks we're playing. So, I looked on Amazon for a shoe toy and found this. It has a decent rating of 4.2 stars currently and it looks pretty sturdy. Well, when I got it, I realized that it's VERY sturdy. In fact, it's too sturdy; at least for a smaller breed like a pug. I know in the title is says for medium to large dogs, but when I looked at the demensions I thought it would be fine for him. He played with it for a few minutes, but it's just too big and VERY heavy for him. I was actually surprised how heavy it was. So, I decided to weigh it on a scale I have and it came out to 0.83 pounds. I actually thought it would read heavier than that (at least a pound), but that's what the scale said and I did it twice to be sure. So, if you have a small dog like a Pug, I wouldn't recommend this. Definitely a great toy for a German Shepherd or something in that category because of how heavy and thick it is. I'm guessing, even with a large breed of dog, this toy is probably going to last a long time. There's also a hole in the top where you can put peanut butter (or some kind if dog friendly treat) inside, which is really cool. I tried that with him as well, but he just wasn't interested. He's more into the Kong plushies. Anyway, in all, it's a pretty good product. Just not for a small breed dog. I'm giving it 4 stars. As you can see from the photos I uploaded, it's a rather small toy, but it's very solid and chunky. I also took a few pictures with a Pilot G2 pen next to it to better judge the size. Would buy from this seller again though if they had other toys for smaller breed dogs. Thank you.
💟 Sarah 💟
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Reviewed in the United States on March 2, 2026
★★★★★ 5
Dog toy
Color: Blue
Great toy for tough chewers
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Reviewed in the United States on May 13, 2026
★★★★★ 1
Smells like chemicals
Color: Blue
Good quality toy but it had a chemical smell. even after washing it my dog wouldn't play with it. Not recommended
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Reviewed in the United States on June 1, 2026