Power Supply 1stCOOL Zdroj White Storm SFX 400, 400W

The 1stCOOL Zdroj White Storm SFX 400 is a compact 400W SFX power supply intended for small form-factor desktop systems. It delivers up to 400 watts with an efficiency around 85% and includes multiple built-in protections to keep connected components safe. The unit is designed for quiet operation and fits SFX-compatible chassis while providing common connector types for modern PC builds.

Advantages

The power supply offers a compact SFX form factor suited to small cases, stable 400W output and approximately 85% efficiency to reduce wasted energy. It includes protection features such as over-voltage and short-circuit protection and operates with low noise levels. The design provides a range of connectors for CPU, GPU, motherboard and storage devices while maintaining durable construction for regular use.

Suitable for

• Compact SFX desktop builds and small form-factor gaming PCs
• Home or office systems requiring a quiet power supply
• Systems with a single GPU or low-to-mid power components

Key specifications

• Output power: 400 W
• Form factor: SFX
• Efficiency: approximately 85%
• Cooling: silent operation (low-noise design)
• Protection features: over-voltage protection, short-circuit protection (and other standard protections)
• Connectors: ATX 24-pin motherboard, 8-pin CPU (1x), PCIe 6-pin, PCIe 8-pin, SATA 15-pin, Molex

How to use

Install the 1stCOOL White Storm SFX 400 into an SFX-compatible case following the case manufacturer’s mounting instructions. Connect the ATX 24-pin cable to the motherboard, attach the 8-pin CPU connector to the CPU power header, and use the supplied PCIe, SATA and Molex connectors for graphics cards, drives and peripherals as required. Ensure all connectors are fully seated and route cables to avoid airflow obstruction. Verify voltage selection if applicable and power on the system to check stable operation.

Usage recommendations

Use this power supply in cases that explicitly support SFX units and pair it with components whose combined power draw stays comfortably below 400 W. Keep ventilation clear and periodically check connections; for high-end multi-GPU or heavily overclocked systems, consider a higher-capacity PSU.