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Silver rectangular ATX power supply unit with 80 PLUS Gold badge

KHACHIMO

KHACHIMO 12V 250W ATX Power Supply MVAC250-12F 80 PLUS Gold

SKU CH-X5BD-2ERMZ

An 80 PLUS Gold certified ATX unit delivering 250 W of 12 V power with Zero RPM fan mode and Modern Standby support for silent, efficient sleep states

  • TypeATX
  • Modern Standby compatibility enables extremely fast wake-from-sleep
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption
  • Zero RPM fan mode stops the fan at low and medium loads
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power
  • ATX form factor fits standard desktop cases

250 W ATX Power Supply for Modern Standby Systems

This KHACHIMO ATX unit delivers 250 W on the 12 V rail and carries 80 PLUS Gold certification. It targets builders assembling compact or low-power desktops that rely on Modern Standby for instant wake and efficient sleep states. The resonant LLC topology with DC-to-DC conversion keeps output clean while reducing coil whine.

Replaces older low-wattage units lacking Modern

Upgrade when the current supply cannot meet Modern Standby timing requirements or runs its fan constantly at idle. The jump is worth it if the system spends long periods in low-power sleep and the owner values near-silent operation through the Zero RPM fan mode. Older group-regulated designs without DC-to-DC conversion will not provide the same low-load efficiency.

Standard ATX mounting fits most chassis

Installation follows the usual ATX screw pattern and connector layout; no special tools are required. What usually goes wrong is forgetting to enable the Modern Standby option in the motherboard firmware, which leaves the fast-wake capability unused. Ensure the 12 V cable length reaches the motherboard socket in larger cases, and verify that the total system draw stays within the 250 W rating.

Highlights

  • Modern Standby compatibility enables extremely fast wake-from-sleep
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption
  • Zero RPM fan mode stops the fan at low and medium loads
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power
  • ATX form factor fits standard desktop cases

Specifications

TypeATX

Questions about this item

Will the standard ATX form factor fit my existing case mounting points?

The ATX type follows the industry-standard dimensions, so it aligns with the four screw holes and rear cutout found in most mid-tower and full-tower chassis.

Which cables must be connected during installation to enable Modern Standby fast wake?

Attach the 24-pin ATX motherboard connector and the 4-pin or 8-pin CPU power cable; the DC-to-DC topology handles the low-power states automatically once those are seated.

How often should the internal fan be cleaned to keep Zero RPM mode effective?

Use compressed air to clear dust from the fan grille every six to twelve months; a clogged grille forces the fan to spin sooner, reducing the silent operation window.

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