be quiet! System Power 11 450W ATX 3.1 PSU, PCIe 5.1, 80+ Bronze

be quiet! System Power 11 450W PSU – ATX 3.1, PCIe 5.1 Ready, 80 PLUS Bronze

The be quiet! System Power 11 450W is a premium ATX 3.1 power supply designed for modern PC builds, supporting PCIe 5.1 graphics cards and offering quiet, stable performance with high efficiency. Built with German engineering precision, it delivers exceptional reliability and low-noise operation, all backed by a 5-year manufacturer’s warranty.

✅ Key Features & Benefits

🟢 ATX 3.1 & PCIe 5.1 Ready
Supports next-gen GPUs with a 12V-2x6 600W connector plus up to 3 PCIe 6+2-pin connectors.

🟢 Ultra-Quiet Operation
Temperature-controlled 120mm rifle-bearing fan with only 10.4 dBA at 10% load.

🟢 Stable Power Delivery
Strong 12V single rail design with 45.83A output ensures rock-solid stability under load.

🟢 High Efficiency
80 PLUS Bronze certified – up to 90% efficiency reduces energy waste and heat.

🟢 Low Standby Drain
Consumes less than 0.15W in standby mode for energy-conscious builds.

🟢 German Engineered Reliability
Over 100,000 hours MTBF and full suite of protection features including OCP, OVP, UVP, SCP, and OTP.

🟢 5-Year Manufacturer’s Warranty
Long-term peace of mind from a trusted brand.

⚙️ Technical Specifications

• Model: System Power 11 450W

• Form Factor: ATX 3.1 / EPS 12V v2.92

• Total Continuous Power: 550W

• 12V Rail: Single, 45.83A

• Efficiency: 80 PLUS Bronze (Up to 90%)

• Fan: 120mm silence-optimised rifle bearing

• Noise Level: As low as 10.4 dBA (10% load)

• Input Voltage: 200 – 240 Vac

• Hold-Up Time: 16.86 ms @ 100% load

• Standby Power: < 0.1W

🔌 Connectors

• 1 × 20+4 Pin ATX

• 1 × 4+4 Pin CPU

• 1 × 4 Pin CPU

• 1 × PCIe 12V-2x6 (PCIe 5.1)

• 2 × PCIe 6+2 Pin

• 5 × SATA

• 1 × Molex (PATA)

📦 What's in the Box

• be quiet! System Power 11 450W PSU

• Screws & Cable Ties

• User Manual

🛡️ Certifications & Protections

• Certifications: CE, TÜV, UKCA

• Protections: OCP, OVP, UVP, SCP, OPP, OTP, SIP

• Environmental: ErP, RoHS, WEEE compliant

Whether you're building a high-efficiency office machine or a quiet gaming rig, the System Power 11 450W offers the perfect balance of performance, silence, and future-ready connectivity.