Chieftec GPB-400S power supply unit 400 W 20+4 pin ATX PS/2 Silver

The Chieftec GPB-400S 400W is a fixed 230V desktop power supply unit designed for reliable everyday PC use. It delivers 400 W of total power with an 85% efficiency rating, a standard 20+4 pin ATX motherboard connector and a single 120 mm cooling fan. The compact silver housing (150 × 140 × 87 mm) and non-modular cabling make it suitable for straightforward system builds where cost-efficiency and dependable power delivery are priorities.

Advantages

The GPB-400S combines a modern PCB design with quality components to provide stable output while maintaining a competitive price. Its 85% efficiency supports reasonable energy use, and the fixed 230V operation with wide frequency compatibility (47–63 Hz) suits standard European mains. The included 120 mm fan ensures consistent cooling and the compact form factor fits most standard enclosures.

Suitable for

• Office and home PCs with modest power demands
• System builds requiring a compact, budget-friendly PSU
• Upgrades of older desktops needing a reliable 400W supply

Key specifications

• Total power: 400 W
• Efficiency: 85%
• Motherboard connector: 20+4 pin ATX
• Input voltage: 200–240 V (fixed @230V)
• Frequency range: 47–63 Hz
• Cabling type: Non-modular
• Fan diameter: 120 mm
• Dimensions: 150 × 140 × 87 mm
• Colour: Silver

How to use

Install the Chieftec GPB-400S into a compatible ATX case and secure it with the supplied screws. Connect the 20+4 pin ATX connector to the motherboard and attach necessary peripheral and drive connectors according to your system layout. Ensure the mains input matches the fixed 230V specification and that the case provides adequate airflow for the 120 mm fan to operate effectively.

Recommendations

Use the GPB-400S in systems whose total component power draw stays well below 400 W to preserve longevity and stability. Keep the PSU and case vents free of dust, and confirm that your build’s connectors are compatible with the non-modular cabling before purchase.