NZXT C650 80+ Bronze Semi Modular Power Supply (650 W)

The NZXT C650 is a 650-watt semi-modular power supply aimed at mainstream desktop PC builds that demand reliable, efficient power delivery without unnecessary cable clutter. As a semi-modular unit, the 24-pin ATX motherboard cable and both 4+4-pin CPU power cables are permanently attached, while the remaining connectors — four 6+2-pin PCIe cables, six SATA power leads, and three 4-pin peripheral connectors — are detachable, keeping your chassis tidy and airflow unobstructed. The C650 carries an 80 Plus Bronze efficiency certification, achieving 82% efficiency at 10% load, 83% at 20% load, 87% at 50% load, and 83% at 100% load. These figures represent real-world energy savings compared to non-certified units and translate to lower heat output inside your case. Active power factor correction rated at 0.96 further reduces reactive power draw from the mains. Cooling is handled by a 120 mm fan using a Fluid Dynamic Bearing (FDB), which offers quieter operation and a longer service life than sleeve-bearing alternatives. Fan speed reaches up to 2,400 RPM (±10%), delivering 72.90 CFM of airflow while keeping noise below 44 dBA under load. The +12V rail is rated for up to 54 A (648 W), making the vast majority of the unit’s output available for GPU and CPU demands — an important consideration when pairing with a mid-range discrete graphics card. Voltage regulation is held to ±5% on the 3.3 V, 5 V, and 12 V rails, with ripple and noise suppressed to less than 120 mV peak-to-peak on the 12 V rail. Built to ATX12V v2.4 and EPS12V v2.92 standards, the C650 is compatible with current-generation ATX motherboards and CPU power requirements. The unit is rated for continuous operation between 0°C and 40°C with a quoted MTBF of 100,000 hours. NZXT backs the C650 with a 5-year warranty. Verified Specifications: – Wattage: 650 W total output – Efficiency: 80 Plus Bronze (82% / 83% / 87% / 83% at 10/20/50/100% load) – Modular: Semi-modular – Compliance: ATX12V v2.4 / EPS12V v2.92 – Dimensions (PSU): 150 mm (W) × 140 mm (L) × 86 mm (H) – +12V rail: 54 A / 648 W – 24-pin ATX: 1 | 4+4-pin CPU: 2 | 6+2-pin PCIe: 4 | SATA: 6 | Peripheral: 3 – Fan: 120 mm FDB, up to 2,400 RPM, 72.90 CFM, <44 dBA – PF Correction: Active, 0.96 – MTBF: 100,000 hours – Operating temperature: 0–40°C – Certifications: CB, CE, FCC, TUV, cTUV-SUDus, China CCC, Taiwan BSMI, Australia RCM, EAC, UKCA, WEEE; RoHS & China RoHS compliant – Warranty: 5 years