be quiet! Straight Power 11 550W Platinum power supply unit 20+4 pin ATX ATX Black
- 80 PLUS® Platinum certification with an outstanding efficiency of up to 93.8%
- Virtually inaudible operation thanks to a Silent Wings 3 135mm fan
- Big funnel-shaped fan opening of the PSU case for high airflow intake
- Wire-free on the DC side inside the PSU for enhanced cooling and longevity
- Modular cables for maximum build flexibility
- Advanced stability and voltage regulation thanks to LLC, SR and DC-to-DC
- Four high-performance 12V rails
- Powerful multi-GPU support with two PCI-Express connectors
- Japanese 105°C-rated capacitors ensure stability and reliability
- Power signal stability unmatched in its class
- ErP and Energy Star 7.0 ready
- Product conception, design and quality control in Germany
be quiet! Straight Power 11 Platinum 550W raises the bar for systems that demand virtually inaudible operation and outstanding efficiency.
| Power |
| Power protection features |
Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage |
| Hold time |
17.7 ms |
| Efficiency |
93.8% |
| Max output current (+5Vsb) |
3 A |
| Max output current (-12V) |
0.3 A |
| Max output current (+5V) |
22 A |
| Max output current (+12V3) |
20 A |
| Max output current (+12V4) |
20 A |
| Max output current (+12V2) |
18 A |
| Max output current (+12V1) |
18 A |
| Max output current (+12V) |
45.8 A |
| Max output current (+3.3V) |
22 A |
| Combined power (+5Vsb) |
15 W |
| Combined power (-12V) |
3.6 W |
| Combined power (+5V) |
110 W |
| Combined power (+12V) |
549.6 W |
| Combined power (+3.3V) |
110 W |
| Power Factor Correction (PFC) type |
Active |
| Power factor |
0.99 |
| Input current |
8/4 A |
| AC input frequency |
50 – 60 Hz |
| AC input voltage |
100 – 240 V |
| Peak power |
600 W |
| Total power |
550 W |
| Ports & interfaces |
| Cabling type |
Fully-Modular |
| Floppy drive power connector |
1 |
| PCI Express power cable length |
60 cm |
| PCI Express power connectors (6+2 pin) |
2 |
| EPS power connector (4+4 pin) |
Yes |
| Number of PATA power connectors |
3 |
| Number of SATA power connectors |
9 |
| Motherboard power cable length |
60 cm |
| Motherboard power connector |
20+4 pin ATX |
| Performance |
| Mean time between failures (MTBF) |
100000 h |
| Bearing technology |
FDB |
| Noise level |
14.9 dB |
| ATX version |
2.51 |
| 80 PLUS certification |
80 PLUS Platinum |
| Power supply unit (PSU) form factor |
ATX |
| Purpose |
PC |
| Design |
| Fan location |
Top |
| Fan speed |
0 – 1200 RPM |
| Number of fans |
1 fan(s) |
| Fan diameter |
13.5 cm |
| Cooling type |
Active |
| Product colour |
Black |
| Certificates |
| Certification |
CE, CB, TÜV, FCC, cTUVus, RCM (Australia), BSMI, CU (Russia), CCC |
| Compliance certificates |
RoHS |
| Weight & dimensions |
| Weight |
1.66 kg |
| Height |
86 mm |
| Depth |
160 mm |
| Width |
150 mm |
| Packaging data |
| Package type |
Box |
| Package weight |
2.84 kg |
| Package height |
102 mm |
| Package depth |
328 mm |
| Package width |
248 mm |
| Manual |
Yes |
| Technical details |
| Sustainability certificates |
ENERGY STAR |
| Logistics data |
| Master (outer) case gross weight |
20.6 kg |
| Harmonized System (HS) code |
84733020 |
| Master (outer) case height |
346 mm |
| Master (outer) case length |
651 mm |
| Master (outer) case width |
282 mm |
| Other features |
| Parallel processing technology support |
Dual Graphics |
| Noise level (full-load mode, 100%) |
14.9 dB |
| Noise level (quiet mode, 50%) |
9.6 dB |
| Noise level (silent mode, |
9 dB |
| Cable ties included |
Yes |
| Screws included |
Yes |
| EPS cable length |
70 cm |
- manual pdf
- leaflet
- Performance curve
- Cables
