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Rectangular ATX power supply unit with fan grille and modular cable ports

KHACHIMO

KHACHIMO -48V 550W 800W Power Supply R1CD2551A

SKU CH-64F9-N1YCS

An ATX power supply delivering 550 W continuous and 800 W peak output at -48 V with 80 PLUS Gold efficiency, Modern Standby support.

  • TypeATX
  • Modern Standby support for extremely fast wake-from-sleep
  • 80 PLUS Gold efficiency for lower power consumption and cooler temps
  • Zero RPM fan mode stops fan at low loads for silent operation
  • Resonant LLC topology with DC-to-DC for clean power and reduced coil whine
  • ATX form factor fits standard desktop cases and builds

ATX 550W Gold Power Supply

The KHACHIMO unit is an ATX form-factor power supply rated at 550 watts continuous output with an 800-watt peak capability. It carries 80 PLUS Gold certification for high efficiency across typical loads. The -48V input design suits specialised DC environments rather than standard mains-powered desktop builds.

Modern Standby and Zero RPM Fan

Modern Standby compatibility enables extremely fast wake-from-sleep transitions and improved low-load efficiency. A Zero RPM fan mode stops the cooling fan entirely at low and medium loads for near-silent operation. Resonant LLC topology with DC-to-DC conversion delivers clean power, reduces coil whine, and supports deeper sleep states.

550W Continuous with 800W Peak Headroom

The supply comfortably handles sustained loads up to 550 watts, making it suitable for mid-range components and efficient platforms. Peak headroom reaches 800 watts for short transients, but continuous draw beyond the rated figure is not supported. Builds requiring higher sustained wattage or standard AC input should consider alternative units.

Highlights

  • Modern Standby support for extremely fast wake-from-sleep
  • 80 PLUS Gold efficiency for lower power consumption and cooler temps
  • Zero RPM fan mode stops fan at low loads for silent operation
  • Resonant LLC topology with DC-to-DC for clean power and reduced coil whine
  • ATX form factor fits standard desktop cases and builds

Specifications

TypeATX

Questions about this item

How often will the 80 PLUS Gold certified fan need cleaning if it runs in Zero RPM mode at low loads?

The fan stops completely at low and medium loads, so dust intake is minimal; a light clean once a year is usually enough.

Will the 550 W continuous rating or the 800 W peak limit be reached first during long gaming sessions?

Sustained loads are capped at 550 W; the 800 W figure only applies to short peaks, so the continuous limit appears first.

How loud and hot does the -48V unit get when it runs all day at typical load?

Zero RPM mode keeps it silent at low loads; 80 PLUS Gold efficiency reduces waste heat, so temperatures stay modest under all-day use.

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