be quiet! Straight Power 11 Platinum 550W raises the bar for systems that demand virtually inaudible operation and outstanding efficiency.
Ports & interfaces | Motherboard power connector | 20+4 pin ATX |
 | Motherboard power cable length | 600 mm |
| Number of SATA power connectors | 9 |
| Number of PATA power connectors | 3 |
| EPS power connector (4+4 pin) | Yes |
| PCI Express power connectors (6+2 pin) | 2 |
| PCI Express power cable length | 600 mm |
| Floppy drive power connector | 1 |
| Cabling type | Fully-Modular |
Power | Total power | 550 W |
| AC input voltage | 100 - 240 V |
| Peak power | 600 W |
| AC input frequency | 50 - 60 Hz |
| Input current | 8/4 A |
| Power factor | 0.99 |
| Power Factor Correction (PFC) type | Active |
| Combined power (+3.3V) | 110 W |
| Combined power (+12V) | 549.6 W |
| Combined power (+5V) | 110 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 15 W |
| Max output current (+3.3V) | 22 A |
| Max output current (+12V) | 45.8 A |
| Max output current (+12V1) | 18 A |
| Max output current (+12V2) | 18 A |
| Max output current (+12V3) | 20 A |
| Max output current (+12V4) | 20 A |
| Max output current (+5V) | 22 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 3 A |
| Hold time | 17.7 ms |
| Efficiency | 93.8 % |
| Power protection features | Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage |
Packaging data | Manual | Yes |
| Package width | 248 mm |
| Package depth | 328 mm |
| Package height | 102 mm |
| Package weight | 2840 g |
Logistics data | Master (outer) case width | 282 mm |
| Master (outer) case height | 346 mm |
| Harmonized System (HS) code | 84733020 |
Performance | Purpose | PC |
| Power supply unit (PSU) form factor | ATX |
| 80 PLUS certification | 80 PLUS Platinum |
| ATX version | 2.51 |
| Noise level | 14.9 dB |
| Bearing technology | FDB |
| Mean time between failures (MTBF) | 100000 h |
| Certification | CE, CB, TÜV, FCC, cTUVus, RCM (Australia), BSMI, CU (Russia), CCC |
Technical details | Sustainability certificates | RoHS, ENERGY STAR |
Design | Product colour | Black |
| Cooling type | Active |
| Fan diameter | 135 mm |
| Number of fans | 1 fan(s) |
| Fan speed | 0 - 1200 RPM |
| Fan location | Top |
Other features | EPS cable length | 700 mm |
| Screws included | Yes |
| Cable ties included | Yes |
| Noise level (silent mode, | 9 dB |
| Noise level (quiet mode, 50%) | 9.6 dB |
| Noise level (full-load mode, 100%) | 14.9 dB |
| Parallel processing technology support | Dual Graphics |
Weight & dimensions | Width | 150 mm |
| Depth | 160 mm |
| Height | 86 mm |
| Weight | 1657 g |