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Rectangular silver ATX power supply unit with ventilation grille and fan visible

KHACHIMO

KHACHIMO YM-2651B 650W ATX Power Supply

SKU CH-43YS-KG4V0

An 80 PLUS Gold 650W ATX unit with Modern Standby support, Zero RPM fan mode and resonant LLC plus DC-to-DC topology for clean, quiet power

  • TypeATX
  • Modern Standby support for extremely fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency, lower power draw, less noise and cooler temps
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 650W ATX design compatible with PowerEdge C1100, C200M1 and C210M1 systems

ATX 650W power supply for modern builds

This ATX power supply delivers 650W of continuous output for desktop systems that demand stable rails and efficient operation. It fits standard tower layouts and supports the sleep-state requirements of current platforms. Builders seeking Gold-class efficiency without excess cabling will find it a practical match.

Gold efficiency with silent low-load operation

The unit carries 80 PLUS Gold certification, reducing waste heat and lowering overall power draw during typical workloads. A Zero RPM fan mode stops the cooling fan completely at low and medium loads, eliminating audible noise while the system idles or handles light tasks. Resonant LLC topology with DC-to-DC conversion keeps voltage regulation tight and suppresses coil whine.

Modern Standby support and cleaner rails

Modern Standby compatibility enables near-instant wake-from-sleep transitions and improves efficiency in deep sleep states. The DC-to-DC secondary stage delivers cleaner minor rails for sensitive components, while the resonant primary reduces electromagnetic noise that can affect audio or recording gear. No software suite or RGB lighting is bundled.

Highlights

  • Modern Standby support for extremely fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency, lower power draw, less noise and cooler temps
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • 650W ATX design compatible with PowerEdge C1100, C200M1 and C210M1 systems

Specifications

TypeATX

Questions about this item

How do I install the KHACHIMO YM-2651B 650W ATX power supply into a compatible server chassis, and which step is commonly missed?

Mount the unit in the PowerEdge C1100, C200M1, or C210M1 bay, connect the main and CPU power cables, then verify the 80 PLUS Gold efficiency rating sticker faces outward for airflow — installers often forget to seat the latch fully.

What maintenance or replacement will the YM-2651B need after extended use?

The Zero RPM fan mode reduces wear at low loads, but the cooling fan bearings will eventually require cleaning or replacement once dust buildup prevents silent operation under medium loads.

Which limit appears first when the 650W supply runs at sustained high load?

Thermal protection engages before the 650W output limit, as the Resonant LLC topology with DC-to-DC conversion prioritises stable voltages over maximum sustained current.

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