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Rectangular ATX power supply unit with matte black metal casing and rear fan grille

KHACHIMO

KHACHIMO 420W ATX Power Supply CP-1356R2

SKU CH-HAW8-NZVNE

An 80 PLUS Gold ATX unit delivering 420 W with Modern Standby support, zero-RPM fan mode and resonant LLC DC-to-DC topology for quiet, efficient power

  • Product typeATX
  • Faster wake from sleep with Modern Standby support
  • Lower power draw and cooler running via 80 PLUS Gold efficiency
  • Near-silent operation at low loads with Zero RPM fan mode
  • Clean, stable power delivery through resonant LLC and DC-to-DC topology
  • Reduced coil whine for quieter overall system acoustics

Power for Modern Standby Builds

The KHACHIMO CP-1356R2 is a 420W ATX power supply built for systems that use Modern Standby sleep states. Its 80 PLUS Gold certification delivers high efficiency across typical loads, reducing waste heat and electricity draw. The resonant LLC topology with DC-to-DC conversion provides clean, consistent power rails for stable component operation. It suits office PCs and quiet home rigs that prioritise low idle consumption and fast wake times.

Check Connectors and Clearance First

Verify that your motherboard and graphics card power connectors match the cables supplied with this unit before ordering. Ensure the standard ATX form factor fits your chassis and that no oversized CPU cooler or drive cage blocks the PSU mounting area. Confirm the total system power draw stays within the 420W rating, especially if you plan a discrete GPU or multiple drives. The unit carries model references SSG520M and SSG550M alongside the CP-1356R2 code for cross-reference.

Sustained Load Behaviour

Under continuous load the 80 PLUS Gold platform maintains its rated efficiency, keeping internal temperatures lower than less certified units. The Zero RPM fan mode stays active at low and medium loads, so the fan only spins when thermal demand rises during prolonged heavy work. Resonant LLC topology with DC-to-DC conversion suppresses coil whine and holds voltage regulation steady over long sessions. This combination suits workloads that run for hours rather than short benchmark bursts.

How it compares

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

Price $388.99
Pricier than about 84% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

Does the KHACHIMO 420W ATX PSU include all cables needed for a typical build?

The unit is an ATX form-factor power supply certified to 80 PLUS Gold efficiency, featuring Modern Standby compatibility, Zero RPM fan mode and a resonant LLC topology with DC-to-DC conversion for clean power delivery and quiet operation.

Which of the listed model codes — CP-1356R2, SSG520M or SSG550M — matches the 420W unit?

The product carries the specific model designation CP-1356R2 and is rated at 420W; the other codes refer to different wattage units in the same series.

What does the 80 PLUS Gold rating mean for daily use in a PC?

It guarantees at least 80% efficiency at typical loads, which reduces wasted electricity, lowers heat output and helps the fan stay off longer under light workloads.

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