We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
KHACHIMO 620W ATX power supply unit in black metal casing

KHACHIMO

KHACHIMO 620W ATX Power Supply YM-6621B 80 PLUS Gold

SKU CH-E5P7-VYQB7

ATX 620 W unit with 80 PLUS Gold efficiency, Zero RPM fan mode and Modern Standby support for quiet, low-power sleep

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • High efficiency operation with 80 PLUS Gold certification
  • Near-silent operation via Zero RPM fan mode
  • Clean power delivery using Resonant LLC topology
  • 620W ATX power supply model YM-6621B

Modern Standby ATX Power Supply

The KHACHIMO YM-6621B is a new 620W ATX power supply built with Resonant LLC topology and DC-to-DC conversion. It carries 80 PLUS Gold certification for high efficiency and lower heat output. Modern Standby compatibility ensures extremely fast wake-from-sleep times and improved low-load efficiency. The Zero RPM fan mode stops the fan entirely at low and medium loads for near-silent operation.

Builders prioritising quiet, efficient sleep states

This unit suits system builders who want clean, consistent power delivery with reduced coil whine and silent running during everyday tasks. The fast wake capability benefits users who rely on Modern Standby sleep states. Buyers who need higher wattage for demanding multi-GPU configurations or extreme overclocking headroom should look at higher-capacity units.

80 PLUS Gold certified 620W capacity

The single specification that decides fit is the 620W rated output combined with 80 PLUS Gold efficiency. This power level supports mainstream gaming PCs and workstations with single high-end graphics cards. Verify that your component peak draw stays within this limit before purchase.

Highlights

  • Fast wake-from-sleep with Modern Standby support
  • High efficiency operation with 80 PLUS Gold certification
  • Near-silent operation via Zero RPM fan mode
  • Clean power delivery using Resonant LLC topology
  • 620W ATX power supply model YM-6621B

Specifications

TypeATX

Questions about this item

Which capacity of this KHACHIMO unit should I pick for my build?

The model is rated at 620W, which is the only capacity offered for the YM-6621B.

What does the 80 PLUS Gold rating actually deliver inside my PC?

It guarantees high-efficiency operation that lowers power draw, reduces heat output and helps keep fan noise down.

How does the ATX form factor limit where this supply can be used?

ATX sizing fits standard desktop chassis and motherboards, so it will install in any case designed for regular ATX power supplies.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.