Power supply unit CHIEFTEC GPB-350S 350 W, ATX 2.3, 20+4 pin, 120 mm fan, 85% efficiency

The Chieftec GPB-350S 350 W is a compact desktop power supply unit designed for standard ATX systems. It delivers 350 W total power, provides a 20+4 pin ATX motherboard connector and operates from AC 200–240 V at 47–63 Hz. The unit uses a fixed, non-modular cable set and an active cooling solution with a 120 mm fan. Built with modern PCB design and components, it meets RoHS requirements and is offered in resource-efficient bulk packaging.

Advantages

The GPB-350S combines moderate efficiency (85%) with a competitive price and reliable components derived from CHIEFTEC's iARENA design approach. Its fixed 20+4 pin ATX connector ensures compatibility with a wide range of motherboards, while the 120 mm fan supports effective heat dissipation for sustained operation. RoHS compliance and fixed 230 V-ready design simplify deployment in regions with 200–240 V mains.

Suitable for

• Office desktop PCs with standard ATX motherboards
• Home computers for web browsing, media playback and light productivity
• System builders seeking cost-effective, RoHS-compliant PSUs in bulk

Key specifications

• Total power: 350 W
• Efficiency: 85%
• Motherboard connector: 20+4 pin ATX
• AC input: 200–240 V, 47–63 Hz
• Fan diameter: 120 mm
• Product colour: Silver
• Modularity: Non-modular cabling
• Compliance: RoHS

How to use

Install the Chieftec GPB-350S into a compatible ATX case, secure it with the mounting screws and connect the 20+4 pin ATX cable to the motherboard. Attach any peripheral connectors required by your drives and components. Ensure mains voltage is within 200–240 V before powering on. Maintain unobstructed airflow around the 120 mm fan to allow effective cooling during operation.

Recommendations

Use this PSU in systems with modest power requirements up to its 350 W rating, avoid heavy overclocking or high-end graphics card combinations that exceed total output, and keep the interior of the PC free of dust to preserve cooling and component longevity.