KHACHIMO R515 R525 770W ATX Power Supply AC-066A

ATX 770W for modern builds

This ATX power supply delivers 770 watts of continuous power for desktop systems that demand stable output. It targets builders who need efficient energy conversion and quiet operation in a standard form factor. The unit carries an 80 PLUS Gold certification, confirming high efficiency across typical load ranges. It is suited for workstations and gaming rigs that prioritise low heat and reduced electricity draw.

Sustained load behaviour with Gold efficiency

Under prolonged load the resonant LLC topology combined with DC-to-DC conversion maintains tight voltage regulation and limits ripple. The design supports modern standby states, allowing the system to enter and exit sleep quickly while drawing minimal power. At low and medium loads the fan remains completely stationary, eliminating audible noise during everyday tasks. Efficiency stays high even during extended sessions, keeping internal temperatures lower than less certified alternatives.

Quiet build with modern standby support

The zero RPM fan mode engages automatically, so the power supply runs silently until thermal demand requires active cooling. Resonant LLC architecture reduces coil whine, contributing to a quieter chassis overall. Modern Standby compatibility means wake-from-sleep times are extremely short, improving daily responsiveness. Builders who need a second high-wattage unit for dual-PSU configurations or who require modular cabling not described here should look elsewhere.