be quiet! Straight Power 12 1200W PSU
£251.94
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About This Item
- 1200W continuous power with 1270W peak capacity
- 13.5 cm Silent Wings fan with FDB bearing technology
- 80 PLUS Platinum certified with 92.4% efficiency
- Fully modular cabling with 9 SATA and 4 PCIe 6+2-pin connectors
- ATX 3.0 standard with 20+4 pin ATX motherboard connector
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be quiet! Straight Power 12 1200W | Platinum Efficiency ATX 3.0 PSU
The be quiet! Straight Power 12 1200W is a high-performance ATX 3.0 power supply unit designed for demanding PC builds. With 80 PLUS Platinum certification and virtually inaudible operation, this PSU delivers exceptional efficiency and reliability for your system.
Key Specifications
| Metric | Spec |
|---|---|
| Power Output | 1200W |
| Efficiency | 80 PLUS Platinum |
| ATX Version | 3.0 |
| Fan Type | Silent Wings FDB |
| Warranty | 10 years |
Future-Proof ATX 3.0 Performance
The Straight Power 12 1200W is built to meet all ATX 3.0 specifications, making it ready for next-generation hardware. It features two 12VHPWR connectors for PCIe 5.0 graphics cards and four PCIe 6+2-pin connectors for current-gen GPUs. This versatility ensures compatibility with both today’s powerful systems and tomorrow’s hardware requirements.
Platinum Efficiency for Cooler Operation
With 80 PLUS Platinum certification and up to 92.4% efficiency, this PSU reduces power consumption and heat generation. The high efficiency translates to lower electricity bills and a cooler system overall. The power factor of 0.99 ensures optimal power delivery to your components.
Silent Wings Fan Technology
The high-end Silent Wings fan features fluid-dynamic bearings and an optimised blade design that produces virtually no noise during operation. With a noise level of just 32.2 dB and fan speeds ranging from 0 to 2600 RPM, the PSU maintains excellent cooling while remaining inaudible in most environments.
Advanced Protection and Reliability
Built with Japanese 105°C capacitors and featuring comprehensive protection systems including over current, over power, over voltage, overheating, short circuit, and under voltage protection, this PSU offers exceptional reliability. The mean time between failures (MTBF) of 100,000 hours demonstrates its long-term durability.
Modular Cable Management
The fully-modular design with sleeved cables up to 100cm in length simplifies installation and reduces cable clutter inside your case. This improves airflow and cooling performance, particularly in larger PC cases where cable management is crucial.
In the Box
- be quiet! Straight Power 12 1200W PSU
- CPU power cable
- SATA power cables
- Cable ties
- User manual
Things to check first
- Confirm your case has sufficient space (150mm x 180mm x 86mm)
- Verify your graphics card’s power connector requirements match available outputs
- Check that your system’s total power draw is within the 1200W continuous limit
- Ensure your motherboard supports ATX 3.0 power delivery specifications
Frequently Asked Questions
Is this PSU compatible with PCIe 5.0 graphics cards?
How many SATA devices can I connect?
What is the warranty period?
Does it support micro ATX and Mini-ITX motherboards?
What is the efficiency rating?
Our take
The be quiet! Straight Power 12 1200W is an excellent choice for enthusiasts and professionals building high-end gaming rigs or workstations. Its combination of ATX 3.0 readiness, Platinum efficiency, silent operation, and comprehensive protection makes it a future-proof investment for any powerful system. Covered by the applicable manufacturer warranty.
| Cooling | |
|---|---|
| Fan diameter | 13.5 cm |
| Number of fans | 1 fan(s) |
| Fan speed | 0 - 2600 RPM |
| Cooling type | Active |
| Performance | |
| On/off switch | Yes |
| Power supply unit (PSU) form factor | ATX |
| 80 PLUS certification | 80 PLUS Platinum |
| Purpose | PC |
| ATX version | 3.0 |
| EPS version | 2.92 |
| Noise level | 32.2 dB |
| Mean time between failures (MTBF) | 100000 h |
| Bearing technology | FDB |
| Supported motherboard form factors | ATX, micro ATX, Mini-ATX |
| Design | |
| 80 PLUS certification | 80 PLUS Platinum |
| Product colour | Black |
| Fan diameter | 13.5 cm |
| On/off switch | Yes |
| Number of fans | 1 fan(s) |
| Fan speed | 0 - 2600 RPM |
| Cooling type | Active |
| Power | |
| Total power | 1200 W |
| Peak power | 1270 W |
| AC input voltage | 110 - 240 V |
| AC input frequency | 50/60 Hz |
| Input current | 15/7.5 A |
| Power factor | 0.99 |
| Combined power (+3.3V) | 150 W |
| Combined power (+12V) | 1200 W |
| Combined power (+5V) | 150 W |
| Max output current (+3.3V) | 25 A |
| Max output current (+12V1) | 100 A |
| Max output current (+5V) | 25 A |
| Max output current (-12V) | 0.5 A |
| Max output current (+5Vsb) | 3 A |
| Power protection features | Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage |
| Hold time | 23 ms |
| Efficiency | 92.4% |
| Ports & interfaces | |
| Motherboard power cable length | 60 cm |
| SATA power cable length | 550,700,850,1000 mm |
| Peripheral (Molex) power cable length | 1000,850 mm |
| PCI Express power cable length | 60 cm |
| CPU power cable length | 70 cm |
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 9 |
| Number of PATA power connectors | 2 |
| EPS power connector (8-pin) | Yes |
| PCI Express power connectors (6+2 pin) | 4 |
| Cabling type | Fully-Modular |
| EPS power connector (4+4 pin) | Yes |
| PCI Express power connectors (16-pin) | 2 |
| Operational conditions | |
| Operating temperature (T-T) | 0 - 40 °C |
| Technical details | |
| Shipping (inner) case width | 28.2 cm |
| Shipping (inner) case net weight | 17 kg |
| Shipping (inner) case length | 44.7 cm |
| Shipping (inner) case height | 34.6 cm |
| Products per shipping (inner) case | 4 pc(s) |
| Sustainability compliance | Yes |
| Sustainability certificates | Triman, ENERGY STAR, ErP |
| Warranty period | 10 year(s) |
| Compliance certificates | RoHS, Federal Communications Commission (FCC), UKCA, WEEE, CE |
| Packaging content | |
| Cables included | CPU, SATA |
| Cable tie(s) included | Yes |
| Weight & dimensions | |
| Width | 150 mm |
| Depth | 180 mm |
| Height | 86 mm |
| Weight | 2.04 kg |
| Packaging data | |
| Cables included | CPU, SATA |
| Package depth | 328 mm |
| Package width | 248 mm |
| Package height | 102 mm |
| Package type | Box |
| Package weight | 3.89 kg |
| Certificates | |
| 80 PLUS certification | 80 PLUS Platinum |
| Logistics data | |
| Shipping (inner) case width | 28.2 cm |
| Shipping (inner) case net weight | 17 kg |
| Shipping (inner) case length | 44.7 cm |
| Shipping (inner) case height | 34.6 cm |
| Products per shipping (inner) case | 4 pc(s) |
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