be quiet! System Power 11 550W
be quiet! System Power 11 550W Review & Specifications
The be quiet! System Power 11 550W by be quiet! is a power supply unit that provides 550 watts of power output. This unit follows the 3.1 standard and comes in a ATX size. It is certified with 80 PLUS Bronze and rated at Bronze efficiency, reaching a peak efficiency of 89%. It features a 120 mm cooling fan , and is actively cooled. This PSU is non-modular . It delivers:
- 45 A on the 12V rail (1 rail(s))
- 20 A on the 5V rail
- 20 A on the 3.3V rail
Power Supply Performance
The be quiet! System Power 11 550W is a mid-range power supply, suitable for mainstream gaming builds and entry-level workstation setups. It offers enough capacity for systems using efficient CPUs and mid-tier graphics cards, striking a good balance between efficiency and power needs.
This PSU achieves a high efficiency of 89% and carries a Bronze certification. It balances cost and performance well and is a reliable choice for mainstream builds. The 5-year warranty reflects good long-term support.
From a cost-efficiency standpoint, this PSU offers low value, with a high cost of $272.8 per kilowatt. Given that it lacks exceptional performance and efficiency, users may find better alternatives at a lower price, making this PSU less attractive for budget-conscious builders.
General Information
| Manufacturer | be quiet! |
|---|---|
| Power Supply Name | be quiet! System Power 11 550W |
| Current Price Amazon | $150 |
| Amazon Price Updated | 1Â day, 13Â hours ago. |
| Power Supply Available | True |
Specification
| Power Output | 550 W |
|---|---|
| ATX Version / Form Factor | 3.1 / ATX |
| Certifications | 80 PLUS Bronze |
| Efficiency Rating | Bronze |
| Modular / Fanless | False / False |
| Fan Size / Fan Stop | 120 mm / False |
| Dimensions | 150 x 140 x 86 mm |
| Warranty | 5 years |
Performance
| Input Voltage | 200-240 V |
|---|---|
| Number of 12 V Rails | 1 |
| Output 12V / 5V / 3.3V | 45 A / 20 A / 20 A |
| Maximum Efficiency | 89% |
| Price per kW | 272.8 USD/kW |
be quiet! System Power 11 550W Compared to Similar Performance PSUs
Power Supply Price / Performance Table
| Power_Supply (Desc) | Price (Desc) | Quality_&_Perf (Desc) | Q&P/Price (Desc) | USD/Kilowatt (Desc) |
|---|---|---|---|---|
|
$80
|
↑
33.3%
|
57.2%
|
71.5%
|
123.1
123.1
|
|
|
$120
|
↑
100.0%
|
57.2%
|
47.6%
|
184.6
184.6
|
|
|
$60
|
0.0%
|
57.2%
|
95.3%
|
92.3
92.3
|
|
|
$92
|
↓
-11.1%
|
57.2%
|
62.2%
|
141.4
141.4
|
|
|
$150
|
↑
0.0%
|
56.6%
|
37.7%
|
272.8
272.8
|
|
|
$69
|
↓
-1.4%
|
56.2%
|
81.5%
|
125.5
125.5
|
|
|
$43
|
0.0%
|
55.3%
|
128.6%
|
79.6
79.6
|
|
|
$48
|
0.0%
|
55.1%
|
114.9%
|
87.3
87.3
|
|
|
$64
|
0.0%
|
55.1%
|
86.3%
|
116.1
116.1
|
PSU Comparison and Detail Specifications Table
| Specification | Perf Chart | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Price |
$80
↑
33.3%
|
$120âť—
↑
100.0%
|
$60
0.0%
|
$92
↓
-11.1%
|
$150
↑
0.0%
|
$69
↓
-1.4%
|
$43
0.0%
|
$48âť—
0.0%
|
$64âť—
0.0%
|
| Price per kW | 123.1 USD/kW | 184.6 USD/kW | 92.3 USD/kW | 141.4 USD/kW | 272.8 USD/kW | 125.5 USD/kW | 79.6 USD/kW | 87.3 USD/kW | 116.1 USD/kW |
| Manufacturer | Thermaltake | Thermaltake Technology Co., Ltd | MSI | Thermaltake | be quiet! | Corsair | Thermaltake USA Direct | MSI | Thermaltake |
| Wattage | 650 W | 650 W | 650 W | 650 W | 550 W | 550 W | 540 W | 550 W | 550 W |
| Ver. / FF | 3.0 / ATX | 2.3 / ATX | 2.3 / ATX | 3.1 / ATX | 3.1 / ATX | 2.3 / ATX | 2.3 / ATX | 2.3 / ATX | 3.1 / ATX |
| Efficiency | Bronze (85%) | Bronze (85%) | Bronze (85%) | Bronze (85%) | Bronze (89%) | Gold (88%) | 80 PLUS (86%) | Bronze (85%) | Bronze (85%) |
| 12V Rails | 1 / 54 A | 1 / 54 A | 1 / 54 A | 1 / 54 A | 1 / 46 A | 1 / 44 A | 1 / 42 A | 1 / 45 A | 1 / 46 A |
| 12V/5V/3.3V | 54 A / 18 A / 18 A | 54 A / 20 A / 20 A | 54 A / 20 A / 20 A | 54 A / 18 A / 18 A | 45 A / 20 A / 20 A | 44 A / 20 A / 24 A | 42 A / 17 A / 22 A | 45 A / 20 A / 20 A | 46 A / 16 A / 16 A |
| Fan Size | 120 mm | 140 mm | 120 mm | 120 mm | 120 mm | 120 mm | 120 mm | 120 mm | 120 mm |
| Modular | ✔️ | ✔️ | ✔️ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| Fan Stop | ✔️ | ❌ | ❌ | ✔️ | ❌ | ❌ | ❌ | ❌ | ✔️ |
| Fanless | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| Dimensions | 150mm(W)x86mm(H)x140mm(D) | 150mm(W) x 86mm(H) x 160mm(D) | 140mm x 150mm x 86mm | 150mm(W)x86mm(H)x140mm(D) | 150 x 140 x 86 mm | 4.92 x 5.91 x 3.39 inches | 150 x 85 x 140 mm | 150 x 140 x 86 mm | 150mm(W)x86mm(H)x140mm(D) |
| Warranty | 5 years | 5 years | 5 years | 5 years | 5 years | 5 years | 5 years | 5 years | 5 years |
Power Supply Specification Table
| Power_Supply (Desc) | Wattage (Desc) | ATX Ver / FF / Modular | Efficiency | 12V Rails / Amp | Output 12V/5V/3.3V | Warranty |
|---|---|---|---|---|---|---|
| 650 W | 3.0 / ATX / True | Bronze, 85% | 1 / 54.00 A | 54 A / 18 A / 18 A | 5 years | |
| 650 W | 2.3 / ATX / True | Bronze, 85% | 1 / 54.00 A | 54 A / 20 A / 20 A | 5 years | |
| 650 W | 2.3 / ATX / True | Bronze, 85% | 1 / 54.00 A | 54 A / 20 A / 20 A | 5 years | |
| 650 W | 3.1 / ATX / False | Bronze, 85% | 1 / 54.00 A | 54 A / 18 A / 18 A | 5 years | |
| 550 W | 3.1 / ATX / False | Bronze, 89% | 1 / 45.83 A | 45 A / 20 A / 20 A | 5 years | |
| 550 W | 2.3 / ATX / False | Gold, 88% | 1 / 44.00 A | 44 A / 20 A / 24 A | 5 years | |
| 540 W | 2.3 / ATX / False | 80 PLUS, 86% | 1 / 42.00 A | 42 A / 17 A / 22 A | 5 years | |
| 550 W | 2.3 / ATX / False | Bronze, 85% | 1 / 45.00 A | 45 A / 20 A / 20 A | 5 years | |
| 550 W | 3.1 / ATX / False | Bronze, 85% | 1 / 46.00 A | 46 A / 16 A / 16 A | 5 years |
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