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Rectangular ATX power supply unit with matte black metal casing and visible cooling fan grille

KHACHIMO

KHACHIMO YM-2821G 820W ATX Power Supply

SKU CH-8J3V-Y7R3D

An 820W ATX power supply with 80 PLUS Gold efficiency, Zero RPM fan mode and Modern Standby support for silent, efficient operation

  • TypeATX
  • Modern Standby support for fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certified for 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 delivers clean power and reduces coil whine
  • 820 W ATX output capacity for demanding system builds

820W ATX Power Supply for Modern Standby PCs

The KHACHIMO YM-2821G delivers 820W of continuous power through an ATX form factor. It targets desktop builders who want efficient, quiet operation and full compatibility with Modern Standby sleep states for near-instant wake times.

80 PLUS Gold efficiency and LLC resonant topology

The single specification that decides fit is the 80 PLUS Gold certification paired with resonant LLC topology and DC-to-DC conversion. This combination guarantees high efficiency at typical loads, clean voltage regulation, and the low-load performance required by Modern Standby without coil whine.

Standard ATX installation with Zero RPM fan mode

Installation follows ordinary ATX mounting and cabling procedures; no special tools or adapters are required. The Zero RPM fan mode stops the fan completely at low and medium loads, so the only common issue is confirming that the case provides adequate airflow when the fan does spin up under heavy load.

Pluspunten

  • Modern Standby support for fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certified for 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 delivers clean power and reduces coil whine
  • 820 W ATX output capacity for demanding system builds

Specificaties

TypeATX

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What does the 820 W rating mean for my build?

It indicates the maximum continuous power the unit can deliver to all components combined, so the total draw of CPU, GPU, drives and peripherals should stay below that figure.

What does the 80 PLUS Gold badge tell me about the power supply?

It certifies high efficiency at typical loads, which reduces waste heat, lowers electricity use and helps the fan stay off longer in semi-passive mode.

Will the ATX form factor fit my case?

Yes, the unit follows the standard ATX dimensions used by most mid-tower and full-tower chassis, so it mounts with four screws at the rear.

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