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be quiet! Straight Power 11 550W Platinum power supply unit 20+4 pin ATX ATX Black
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- 550 W
- ATX-Motherboard/P4+4/PCI-e 6+2-pin/PATA 4-pin/SATA 15-pin/FDD
- 14.9 dB
- 160 x 150 x 86 mm
SKU #: BN305
EAN #: 4260052187364
UNSPSC #: 39121004
- 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
| Purpose | PC |
|---|---|
| Total power | 550 W |
| Power supply unit (PSU) form factor | ATX |
| SKU | BN305 |
| EAN | 4260052187364 |
| Manufacturer | be quiet! |
| Availability | Out of Stock |
| Product Videos |
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| PDF URLs |
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| Cooling | |
|---|---|
| Fan diameter | 13.5 cm |
| Number of fans | 1 fan(s) |
| Fan speed | 0 - 1200 RPM |
| Fan location | Top |
| Cooling type | Active |
| Design | |
| 80 PLUS certification | 80 PLUS Platinum |
| Certification | CE, CB, TÜV, FCC, cTUVus, RCM (Australia), BSMI, CU (Russia), CCC |
| Product colour | Black |
| Fan diameter | 13.5 cm |
| Number of fans | 1 fan(s) |
| Fan speed | 0 - 1200 RPM |
| Fan location | Top |
| Cooling type | Active |
| Power | |
| Total power | 550 W |
| Peak power | 600 W |
| AC input voltage | 100 - 240 V |
| 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 (+12V4) | 20 A |
| Max output current (+12V3) | 20 A |
| Max output current (+5V) | 22 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 3 A |
| Power protection features | Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage |
| Hold time | 17.7 ms |
| Efficiency | 93.8% |
| Ports & interfaces | |
| Motherboard power cable length | 60 cm |
| PCI Express power cable length | 60 cm |
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 9 |
| Number of PATA power connectors | 3 |
| PCI Express power connectors (6+2 pin) | 2 |
| Floppy drive power connector | 1 |
| Cabling type | Fully-Modular |
| EPS power connector (4+4 pin) | Yes |
| EPS cable length | 70 cm |
| Performance | |
| Power supply unit (PSU) form factor | ATX |
| Noise level (quiet mode, 50%) | 9.6 dB |
| Noise level (silent mode, <30%) | 9 dB |
| Noise level (full-load mode, 100%) | 14.9 dB |
| 80 PLUS certification | 80 PLUS Platinum |
| Purpose | PC |
| ATX version | 2.51 |
| Parallel processing technology support | Dual Graphics |
| Noise level | 14.9 dB |
| Mean time between failures (MTBF) | 100000 h |
| Certification | CE, CB, TÜV, FCC, cTUVus, RCM (Australia), BSMI, CU (Russia), CCC |
| Bearing technology | FDB |
| Harmonized System (HS) code | 84733020 |
| Weight & dimensions | |
| Width | 150 mm |
| Depth | 160 mm |
| Height | 86 mm |
| Weight | 1.66 kg |
| Packaging data | |
|---|---|
| Screws included | Yes |
| Cable ties included | Yes |
| Package depth | 328 mm |
| Package width | 248 mm |
| Package height | 102 mm |
| Package type | Box |
| Package weight | 2.84 kg |
| Manual | Yes |
| Technical details | |
| Sustainability certificates | ENERGY STAR |
| Compliance certificates | RoHS |
| Certificates | |
| 80 PLUS certification | 80 PLUS Platinum |
| Certification | CE, CB, TÜV, FCC, cTUVus, RCM (Australia), BSMI, CU (Russia), CCC |
| Packaging content | |
| Screws included | Yes |
| Cable ties included | Yes |
| Manual | Yes |
| Logistics data | |
| Master (outer) case width | 282 mm |
| Master (outer) case length | 651 mm |
| Master (outer) case height | 346 mm |
| Master (outer) case gross weight | 20.6 kg |
| Harmonized System (HS) code | 84733020 |
| Other features | |
| Screws included | Yes |
| Cable ties included | Yes |
| Noise level (quiet mode, 50%) | 9.6 dB |
| Noise level (silent mode, <30%) | 9 dB |
| Noise level (full-load mode, 100%) | 14.9 dB |
| Parallel processing technology support | Dual Graphics |
| Manual | Yes |
| Harmonized System (HS) code | 84733020 |
| EPS cable length | 70 cm |
be quiet! Straight Power 11 Platinum 550W raises the bar for systems that demand virtually inaudible operation and outstanding efficiency.
| Cooling | |
|---|---|
| Fan diameter | 13.5 cm |
| Number of fans | 1 fan(s) |
| Fan speed | 0 - 1200 RPM |
| Fan location | Top |
| Cooling type | Active |
| Design | |
| 80 PLUS certification | 80 PLUS Platinum |
| Certification | CE, CB, TÜV, FCC, cTUVus, RCM (Australia), BSMI, CU (Russia), CCC |
| Product colour | Black |
| Fan diameter | 13.5 cm |
| Number of fans | 1 fan(s) |
| Fan speed | 0 - 1200 RPM |
| Fan location | Top |
| Cooling type | Active |
| Power | |
| Total power | 550 W |
| Peak power | 600 W |
| AC input voltage | 100 - 240 V |
| 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 (+12V4) | 20 A |
| Max output current (+12V3) | 20 A |
| Max output current (+5V) | 22 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 3 A |
| Power protection features | Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage |
| Hold time | 17.7 ms |
| Efficiency | 93.8% |
| Ports & interfaces | |
| Motherboard power cable length | 60 cm |
| PCI Express power cable length | 60 cm |
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 9 |
| Number of PATA power connectors | 3 |
| PCI Express power connectors (6+2 pin) | 2 |
| Floppy drive power connector | 1 |
| Cabling type | Fully-Modular |
| EPS power connector (4+4 pin) | Yes |
| EPS cable length | 70 cm |
| Performance | |
| Power supply unit (PSU) form factor | ATX |
| Noise level (quiet mode, 50%) | 9.6 dB |
| Noise level (silent mode, <30%) | 9 dB |
| Noise level (full-load mode, 100%) | 14.9 dB |
| 80 PLUS certification | 80 PLUS Platinum |
| Purpose | PC |
| ATX version | 2.51 |
| Parallel processing technology support | Dual Graphics |
| Noise level | 14.9 dB |
| Mean time between failures (MTBF) | 100000 h |
| Certification | CE, CB, TÜV, FCC, cTUVus, RCM (Australia), BSMI, CU (Russia), CCC |
| Bearing technology | FDB |
| Harmonized System (HS) code | 84733020 |
| Weight & dimensions | |
| Width | 150 mm |
| Depth | 160 mm |
| Height | 86 mm |
| Weight | 1.66 kg |
| Packaging data | |
|---|---|
| Screws included | Yes |
| Cable ties included | Yes |
| Package depth | 328 mm |
| Package width | 248 mm |
| Package height | 102 mm |
| Package type | Box |
| Package weight | 2.84 kg |
| Manual | Yes |
| Technical details | |
| Sustainability certificates | ENERGY STAR |
| Compliance certificates | RoHS |
| Certificates | |
| 80 PLUS certification | 80 PLUS Platinum |
| Certification | CE, CB, TÜV, FCC, cTUVus, RCM (Australia), BSMI, CU (Russia), CCC |
| Packaging content | |
| Screws included | Yes |
| Cable ties included | Yes |
| Manual | Yes |
| Logistics data | |
| Master (outer) case width | 282 mm |
| Master (outer) case length | 651 mm |
| Master (outer) case height | 346 mm |
| Master (outer) case gross weight | 20.6 kg |
| Harmonized System (HS) code | 84733020 |
| Other features | |
| Screws included | Yes |
| Cable ties included | Yes |
| Noise level (quiet mode, 50%) | 9.6 dB |
| Noise level (silent mode, <30%) | 9 dB |
| Noise level (full-load mode, 100%) | 14.9 dB |
| Parallel processing technology support | Dual Graphics |
| Manual | Yes |
| Harmonized System (HS) code | 84733020 |
| EPS cable length | 70 cm |