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Compact SFX power supply unit with black metal casing and visible cooling fan grille

KHACHIMO

KHACHIMO ZJD-650FP 500W SFX power supply

SKU CH-1DJG-9ZF47

SFX power supply delivering 500W with 80 PLUS Gold efficiency, Zero RPM fan mode for silent low-load operation, and Modern Standby compatibility for fast wake times

  • TypeATX
  • Modern Standby compatibility enables rapid wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for lower consumption, less noise and cooler temperatures
  • 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 power and reduces coil whine
  • DC-to-DC conversion enables more energy-efficient sleep states for improved standby efficiency

Compact SFX power supply for small-form-factor

The KHACHIMO ZJD-650FP is a 500W SFX unit designed for Mini-ITX and other space-constrained chassis. It delivers ATX-standard power in a reduced footprint, making it suitable for compact gaming rigs, workstations or home-theatre PCs where a full-size PSU will not fit. Builders who need more than 500W of continuous output should consider a higher-wattage model.

Sustained-load behaviour

The 80 PLUS Gold certification means the unit maintains high efficiency across typical loads, reducing waste heat and keeping internal temperatures lower during extended sessions. Resonant LLC topology with DC-to-DC conversion provides stable voltage regulation under continuous demand. At low and medium loads the Zero RPM mode stops the fan completely, so sustained idle or light workloads remain near-silent.

Straightforward SFX installation

The SFX form factor uses the same ATX connector layout as larger units, so cable routing follows familiar patterns in compatible cases. An SFX-to-ATX bracket is not included, so verify that your chassis accepts native SFX mounting before purchase. The short cables typical of SFX designs may require careful planning in deeper cases, and builders needing extra length will have to source extensions separately.

Highlights

  • Modern Standby compatibility enables rapid wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for lower consumption, less noise and cooler temperatures
  • 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 power and reduces coil whine
  • DC-to-DC conversion enables more energy-efficient sleep states for improved standby efficiency

Specifications

TypeATX

Questions about this item

How loud does the 500W SFX unit run when the system is under load all day?

The Zero RPM fan mode stops the fan completely at low and medium loads for near-silent operation, while the resonant LLC topology with DC-to-DC conversion reduces coil whine for quieter performance under sustained load.

Which cables or connectors must I already have to install this SFX power supply?

The unit follows the standard ATX pin-out, so it works with the 24-pin motherboard, 8-pin CPU and PCIe cables that come in the box; no extra proprietary connectors are required.

Will this 500W SFX supply work reliably with an older motherboard that lacks Modern Standby support?

Yes, Modern Standby compatibility is backward compatible — the supply delivers clean power via its resonant LLC and DC-to-DC design on any ATX board, simply without the faster wake-from-sleep benefit.

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