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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
4.9 ★★★★★
Based on 1679 reviews
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Product Reviews
★★★★★ 5
Transformative!
Format: Paperback
This book is well written and extremely informative! It has definitely helped me to take the energy work I do to a whole new level I actually recommend all the books in this series!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
★★★★★ 5
A Healer's Book
Format: Paperback
In my opinion, this book is most suited to the "healers". I am only part-way through it right now, but thoroughly agree with what I have read so far because I have either experienced it or it makes logical sense from where I am on my personal journey. The book is slow reading, not difficult, but slow if you really want to understand what Barbara has written as she combines science with metaphysical beliefs. I cannot compare this book to her first book because, although I purchased her first book years ago, I honestly have not read it yet. "Light Emerging" was recommended by my master teacher. Barbara has spent significant time studying the auric fields of people vs. behavior.
I plan to return to this review at a later time and update it with additional information, but I see it as a valuable resource for a healer (for both healing self and healing others). By the way, if you don't know it already, healing is not limited to the physical body. There is emotional healing and spiritual healing as well. ALL are important. The healthiest people are those who are balanced on all levels.
This 342-page book explains a lot about energy, both scientifically and metaphysically. If you have already done significant reading, this book expands on a lot of it, such as explaining the chakras and the movement of energy throughout the system. As Barbara goes through each chakra, she explains how you likely behave if that chakra is fully functioning or if it is blocked. Quite a few illustrations within the book visually show you the energy movements within people who exhibit certain types of behavior, and the movements of energy within groups of 2 people exchanging energies at certain levels. This is one way in which this book is different from many other chakra and energy vibrational books. An example is an illustration of a couple in dispute and how they energetically resolved the dispute. Barbara has the developed ability to see the auric fields, as some do, and she supplements her writing with experiences she has had with clients. In this instance, she explains the energy movement in 3 stages of the therapy between the couple, as well as illustrates it in picture form, so you can follow what is happening energetically between the couple throughout the process.
Here is a little tid-bit for you from the book: Barbara mentions that Dr. Robert Beck, a nuclear physicist, found that all healers exhibit the brain-wave patterns of 7.8 - 8 Hz while they are giving healings, the same fluctuation of the earth's magnetic energy field (the Schumann waves). The assumption is that the healers are synching up with the earth's magnetic field when doing healing. Dr. John Zimmerman, founder and president of Bio-Electro-Magnetics Institute, found through additional research, that once healers have linked with the Schumann waves, the right and left hemispheres of their brain have become balanced with each other and show a 7.8 - 8 Hz alpha rhythm. After they link with the patient for some time through laying on of hands, they are able to link the client in with the same earth's energy magnetic pulsations.
Good book. If you are into metaphysical energy and healing, I think you will enjoy it and find it very informative. If you are NOT into metaphysical energy and healing, you will likely not understand it and may get nothing from it, especially if you are not open to this area of study.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 31, 2008
★★★★★ 5
Sequel to Hands of Light
Format: Paperback
Hands of Light has been widely recognized as the foundational text merging the Eastern approach to healing through cleansing and balancing a person's chakras and auras with the Western approach to healing through re-tuning a person's electromagnetic frequencies by applying the principles of quantum physics.
Barbara's sequel, Light Emerging, further amplifies and extends these concepts. Specifically, she elaborates on the applications of the Holographic Model, the Creative Process and the mechanisms of Spiritual Guidance. She defines and diagrams the four dimensions of humanity at the Physical, Auric, Harac and Core Star levels. Through these four dimensions, average humans, once healed and balanced, can mature to be channels of energy, connecting heaven to earth vertically, and connecting all of humanity horizontally. The whole of Barbara's teaching can be incorporated into these four simple, clear and deeply profound diagrams.
Since her previous book, Barbara set aside her private practice to establish a four-year university-level program to train and accredit healing practitioners to apply these disciplines. This book incorporates the further insights and experiences she gained through developing her School. Light Emerging is written specifically to instruct readers on how to self-heal and to give readers a preview on the commitment required to becoming a healing practitioner. This book is not intended to replace her School's four-year degree in healing. Appendix C offers links to current lists of her practicing graduates, by city and state.
There is no duplication between her books. I personally benefited by reading and studying them side by side. I have also called a number of her graduates here in California and confirm they have both the meticulous training and proper motives to follow in Barbara Ann Brennon's footsteps.
No fiction here. This book exemplifies the theory and practice of genuine physical, psychological and spiritual healing, either through self-study or through a practitioner.
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Reviewed in the United States on August 24, 2011
★★★★★ 5
only you can initiate the healing response
Format: Kindle
We are all divine light and this book gives you the tools to access your own healing response to live your life in light and love.
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Reviewed in the United States on November 5, 2025
★★★★★ 5
Good deal
Format: Paperback
This book is in fine shape. Like new
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Reviewed in the United States on May 10, 2026