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KHACHIMO ATX power supply unit in black finish

KHACHIMO

KHACHIMO PMMK450S-24-E 450W ATX power supply

SKU CH-RH4H-1F9A1

A 450 W ATX power supply tested for reliable operation, first listed in March 2024

  • Product typeATX
  • ATX form factor fits standard desktop cases
  • 450W output powers mid-range system builds
  • Unit tested working before it ships
  • Good quality components support reliable operation
  • First listed by manufacturer on 26 March 2024

450 W ATX power supply

The KHACHIMO PMMK450S-24-E is a 450 W ATX power supply intended for standard desktop builds. It delivers the rated output for everyday computing tasks and office workloads. The unit is supplied new and has been test working by the manufacturer.

Thermals and noise in normal use

The supply operates at typical efficiency levels for its class during regular desktop activity. Fan speed adjusts to the load, keeping acoustic output low while maintaining safe internal temperatures. Power draw from the wall matches the system demand without excessive overhead.

Behaviour under sustained load

During prolonged operation the unit maintains stable voltage rails within ATX specification. Thermal protection engages if internal temperatures exceed safe limits, preventing component stress. The 450 W rating is continuous rather than a peak figure, so output remains consistent over extended sessions.

How it compares

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

Price $407.99
Pricier than about 85% 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 the ATX 450W unit in a standard case?

Align the unit with the rear cutout, secure it with four mounting screws, then connect the 24-pin motherboard and CPU power cables before closing the side panel.

What maintenance will the fan and capacitors require over time?

Dust the intake grill every few months with compressed air; electrolytic capacitors typically last years and need no routine service unless the unit shows voltage instability.

Which limit appears first when the 450W supply runs continuously at full load?

The 450W rated output ceiling is reached before thermal protection triggers, so sustained loads above that rating will cause shutdown or voltage droop.

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