KHACHIMO MATX 300W ATX Power Supply FSP300-50SNV FSP300-60GNV

300 W ATX Power Supply for Micro-ATX Builds

This 300 W ATX unit delivers Modern Standby compatible power with 80 PLUS Gold efficiency. The resonant LLC topology and DC-to-DC conversion provide clean voltage rails for stable system operation. Zero RPM fan mode keeps acoustics low during light workloads. It fits standard Micro-ATX chassis and supports RTX 1050 and 1060 class graphics cards.

Upgrade from Lower Efficiency or Noisy Units

Replacing a bronze-rated or group-regulated supply reduces heat output and eliminates coil whine thanks to the LLC resonant design. The jump is worthwhile when building a modern standby system that demands fast wake times and low idle draw. Zero RPM operation benefits offices or bedrooms where silence matters. Builders needing more than 300 W for higher-tier GPUs or multi-drive arrays should look elsewhere.

Limits of the ATX 300 W Standard

The 300 W ceiling restricts use to entry-level GPUs and modest CPU configurations. Modern Standby support requires a compatible motherboard and operating system to function. Gold efficiency peaks at typical loads; very light or maximum loads sit lower on the curve. Zero RPM mode disengages once temperatures rise past the internal threshold, so sustained heavy loads will spin the fan.