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Rectangular ATX power supply unit in matte black finish

KHACHIMO

KHACHIMO Z2 800 880 G4 G5 G6 4Pin 550W power supply

SKU CH-0KCA-FED1K

An 80 PLUS Gold ATX power supply delivering 550 W with Zero RPM fan mode and Modern Standby compatibility for fast wake times and silent low-load operation

  • Product typeATX
  • Modern Standby support enables rapid wake-from-sleep
  • 80 PLUS Gold certification delivers high efficiency and cooler running
  • Zero RPM fan mode stops the fan at low loads for silent operation
  • Resonant LLC with DC-to-DC conversion provides clean power and reduces coil whine
  • ATX form factor fits standard desktop cases

ATX 550 W Gold power supply

The KHACHIMO Z2 550 W unit is an ATX power supply built for desktop PCs that need reliable, efficient power delivery. It carries 80 PLUS Gold certification and uses a resonant LLC topology with DC-to-DC conversion for stable output. Modern Standby support allows extremely fast wake-from-sleep times and better low-load efficiency. A zero-RPM fan mode keeps the system near-silent at low and medium loads.

Check ATX fit and connector needs

Before ordering, verify that your case accepts a standard ATX power supply and that your motherboard uses a 24-pin ATX power connector. Confirm the CPU power requirement matches the available 4-pin or 8-pin EPS connector on the unit. Ensure the graphics card power connectors supplied meet your GPU's needs. Check that the physical dimensions suit your chassis clearance.

Replaces older Bronze or unrated units

This supply replaces older 80 PLUS Bronze, White or unrated ATX units when you want higher efficiency, lower heat and quieter operation. The jump is worth it if your current PSU lacks Modern Standby compatibility or runs its fan constantly at idle. It also upgrades systems where coil whine or inconsistent voltage rails cause instability. Builders needing more than 550 W or additional PCIe connectors should look elsewhere.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $183.99
Pricier than about 60% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

What cables and connectors are included with the KHACHIMO Z2 550W unit?

The power supply ships with the standard ATX cable set for motherboard, CPU and peripheral connections; no extra adapters or mounting screws are supplied.

How do I decide between the Z2 800 and Z2 880 model numbers for my build?

Both identifiers refer to the same 550W platform; choose the SKU that matches your region or retailer listing.

What does the 80 PLUS Gold badge mean for everyday use in my PC?

It certifies high-efficiency conversion across typical loads, lowering electricity draw, reducing waste heat and allowing the fan to stay off longer.

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