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ATX power supply unit with fan and mesh grille

KHACHIMO

KHACHIMO HK500-58FP 400W 500W ATX Power Supply

SKU CH-85DT-7V0AC

ATX power supply rated 400W continuous and 500W peak with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support

  • Product typeATX
  • Modern Standby support delivers rapid wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification ensures high efficiency, lower power draw and cooler operation
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent running
  • Resonant LLC topology with DC-to-DC conversion provides clean power and reduces coil whine
  • 400 W rated and 500 W peak output handles typical ATX system demands

Modern Standby ATX Power Supply

The KHACHIMO HK500-58FP is a 400 W continuous-rated ATX power supply designed for desktop builders who want efficient power delivery and support for Modern Standby sleep states. It suits systems where fast wake-from-sleep and low idle power draw are priorities.

80 PLUS Gold Zero RPM Fan Mode

The unit carries 80 PLUS Gold certification, reducing waste heat and overall power consumption during normal operation. A Zero RPM fan mode stops the cooling fan entirely at low and medium loads, keeping acoustics near silent until higher thermal demand requires active airflow.

Resonant LLC DC-to-DC Topology

Resonant LLC topology paired with DC-to-DC conversion delivers clean, consistent voltage regulation and reduces coil whine. This design enables deeper, more energy-efficient sleep states without extra cables or software, simplifying the build while improving long-term reliability.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $68.99
Cheaper than about 80% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

How do I install this ATX power supply and which connector do builders often miss?

Mount the unit with four screws, connect the 24-pin ATX and CPU power cables; the 4+4-pin CPU connector near the socket is the step most builders forget.

What maintenance will this PSU need over time?

The Zero RPM fan mode keeps the fan off at low and medium loads, reducing wear; clean dust from the intake grill periodically to maintain airflow when the fan does spin.

Which limit appears first during sustained heavy loads?

The 400 W continuous rating is the ceiling; exceeding it trips protection before the 500 W peak figure is reached.

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