Youre fed up with a noisy power supply that turns your workspace into a racket. You need a quiet solution, and the be quiet! System Power 11 450W 80+ Bronze Fully Wired ATX 3.1 PSU, Power Supply delivers whisper-low fan noise while keeping power stable. It removes the distraction, protects your components and lets you focus on work or play without the constant hum.
be quiet! System Power 11 450W 80+ Bronze Fully Wired ATX 3.1 PSU, Power Supply
The be quiet! System Power 11 450W 80+ Bronze Fully Wired ATX 3.1 PSU, Power Supply is a 450W ATX power supply built for entry-level desktops and gaming rigs that still demand reliable protection. It fits standard ATX cases, supplies the common connectors you need, and runs at 19.1 dB when the fan kicks in.
Benefits
- Your PC stays quiet, so you stay focused.
- Stable 450W output protects components during spikes.
- Low standby draw reduces electricity costs.
- Temperature-controlled fan runs only when needed.
- Single-rail design simplifies cable routing.
- Consistent performance even under moderate load.
Features
- 450W continuous output
- ATX 3.1 compatibility
- 19.1 dB fan noise
- Rifle bearing fan
- Non-modular cabling
- 2 x 6+2 mm PCIe connectors
- 5 x SATA power connectors
- 100,000 h MTBF
Specifications
| Power |
| Power protection features |
Over current, Over power, Over voltage, Overheating, Short circuit, Surge & inrush, Under voltage |
| Efficiency |
89% |
| Hold time |
16.86 ms |
| Max output current (+5Vsb) |
3 A |
| Max output current (-12V) |
0.3 A |
| Max output current (+5V) |
20 A |
| Max output current (+12V1) |
37.5 A |
| Max output current (+3.3V) |
20 A |
| Combined power (+5Vsb) |
15 W |
| Combined power (-12V) |
3.6 W |
| Combined power (+5V) |
110 W |
| Combined power (+12V) |
450 W |
| Combined power (+3.3V) |
110 W |
| Number of +12V rail(s) |
1 |
| Power factor |
0.98 |
| Input current |
4 A |
| AC input frequency |
50 Hz |
| AC input voltage |
200 - 240 V |
| Total power |
450 W |
| Ports & interfaces |
| Cabling type |
Non-Modular |
| CPU power connector (4+4 pin) |
Yes |
| PCI Express power connectors (6+2 pin) |
2 |
| Peripheral (Molex) power connectors (4-pin) |
1 |
| Number of SATA power connectors |
5 |
| Motherboard power connector |
20+4 pin ATX |
| Performance |
| Mean time between failures (MTBF) |
100000 h |
| Bearing technology |
Rifle |
| Noise level |
19.1 dB |
| EPS version |
2.92 |
| ATX version |
3.1 |
| 80 PLUS certification |
80 PLUS Bronze |
| Power supply unit (PSU) form factor |
ATX |
| Purpose |
PC |
| Design |
| On/off switch |
Yes |
| Fan speed |
0 - 1800 RPM |
| Number of fans |
1 fan(s) |
| Fan diameter |
12 cm |
| Cooling type |
Active |
| Product colour |
Black |
| Certificates |
| Compliance certificates |
CB, CE, RoHS, TÜV mark, UKCA, WEEE |
| Waste Electrical and Electronic Equipment (WEEE) compliance |
Yes |
| Weight & dimensions |
| Weight |
1.7 kg |
| Height |
140 mm |
| Depth |
86 mm |
| Width |
150 mm |
| Packaging data |
| Package type |
Box |
| Package weight |
2.1 kg |
| Package height |
97 mm |
| Package depth |
268 mm |
| Package width |
195 mm |
| Technical details |
| Sustainability certificates |
ENERGY STAR, ErP |
| Other features |
| Cable ties included |
Yes |
| Screws included |
Yes |
