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Rectangular metal PSU unit with matte black finish and cooling fan grille

KHACHIMO

KHACHIMO GW-2UR550 550W 80 PLUS Gold Power Supply

SKU CH-D2D2-9CJZ0

ATX 550 W unit with 80 PLUS Gold efficiency, zero-RPM fan mode and LLC resonant topology for quiet, low-heat operation

  • TypeATX
  • Faster wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stops at low loads for silent running
  • Resonant LLC with DC-to-DC gives clean, stable power
  • 550 W output fits 2U server chassis

KHACHIMO 550W Gold ATX PSU

The KHACHIMO GW-2UR550 is a 550W ATX power supply certified 80 PLUS Gold for high efficiency. It uses a resonant LLC topology with DC-to-DC conversion to deliver clean, consistent power. Modern Standby compatibility enables extremely fast wake-from-sleep times and improved low-load efficiency. A zero RPM fan mode stops the fan at low and medium loads for near-silent operation.

Suits builds needing Gold efficiency

This unit fits systems that benefit from high efficiency, lower power draw and reduced noise at idle. The Modern Standby support suits PCs using low-power sleep states. Builds requiring higher wattage than 550W or non-ATX form factors should look at alternative units. The specific server model compatibilities listed may not apply to standard desktop cases.

Standard ATX installation

Installation follows standard ATX mounting and cabling procedures in compatible chassis. The zero RPM fan mode activates automatically at low and medium loads, so the fan may remain off during light use. Coil whine is reduced by the resonant LLC and DC-to-DC design. Ensure the 550W capacity matches the total system power requirement before fitting.

Points forts

  • Faster wake-from-sleep with Modern Standby support
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Fan stops at low loads for silent running
  • Resonant LLC with DC-to-DC gives clean, stable power
  • 550 W output fits 2U server chassis

Caractéristiques

TypeATX

Questions sur cet article

Does this 550W unit fit a standard ATX case?

Yes, the type is ATX so it mounts in any chassis built for that form factor.

Will the Zero RPM Fan Mode still work if I pair this supply with an older motherboard that does not support Modern Standby?

The fan stops at low and medium loads regardless of the motherboard sleep state; Modern Standby only affects wake speed, not the zero-RPM threshold.

How can I verify the 80 PLUS Gold efficiency after installation?

Use a wall power meter to compare AC draw with DC load; at typical loads the unit should show efficiency at or above the Gold tier.

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