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Rectangular black ATX power supply unit with fan grille and cable connectors

KHACHIMO

KHACHIMO FSP800-20ERM-H 800W ATX power supply

SKU CH-G3S7-MRWWS

ATX power supply delivering 800 W for desktop builds, first listed by the manufacturer in 2024

  • Product typeATX
  • 800 W output powers demanding ATX builds
  • Tested working so it arrives ready to install
  • Good quality components support stable operation
  • Standard ATX form factor fits typical cases
  • Listed by the manufacturer in March 2024

KHACHIMO FSP800-20ERM-H 800W ATX

This power supply is a new ATX unit rated at 800W. It is intended for desktop builders who need a standard form-factor PSU for a typical system. The unit has been test working and is described as good quality by the supplier. It suits general-purpose PC assembly.

800W capacity and headroom

An 800W rating provides comfortable headroom for mid-range graphics cards and modern multi-core processors under load. It handles typical gaming or workstation components without running near its limit. The supply runs out when total system draw approaches the rated maximum, so very high-end dual-GPU builds would exceed its capability.

ATX type specification

The single specification that decides fit is the ATX type designation. This confirms compatibility with standard ATX cases and motherboards. Builders using SFX, TFX or proprietary small-form-factor chassis cannot use this unit. Verify your case supports ATX power supplies before purchase.

How it compares

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

Price $323.99
Pricier than about 80% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

Will the FSP800-20ERM-H fit and power an older ATX chassis I already own?

The unit follows the ATX form factor, so it mounts in standard ATX cases and provides the usual 24-pin, CPU and peripheral connectors for legacy builds.

How can I confirm the FSP800-20ERM-H is operating correctly once installed?

The supplier test-works every unit before dispatch; after fitting, a successful POST and stable voltages in the BIOS or monitoring software show it is running as intended.

What cables come with the FSP800-20ERM-H and what must I source separately?

The power supply ships with its fixed ATX cable set; any specialised adapters — such as extra PCIe 12-pin or proprietary motherboard connectors — would need to be purchased separately.

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