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
Rectangular ATX power supply unit in matte black finish with cooling fan and modular cable connectors

KHACHIMO

KHACHIMO 740-053351 JPSU-850W-AC-AFI power supply

SKU CH-SAMP-QREC5

An 850W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby compatibility

  • TypeATX
  • Modern Standby compatibility enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption
  • 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, consistent power and reduces coil whine
  • 850 W ATX power supply supports modern energy-efficient sleep states

850 W ATX power module

The KHACHIMO 740-053351 JPSU-850W-AC-AFI is an 850 W ATX power supply built for modern desktop systems. It carries 80 PLUS Gold certification and supports Modern Standby for rapid wake-from-sleep. The unit targets builders who want high efficiency and low noise in a standard form factor.

Installation and common issues

The supply uses a conventional ATX footprint and standard connectors, so it fits most current chassis without modification. Zero RPM fan mode keeps the unit silent at low and medium loads, though the fan will spin up under heavy demand. Resonant LLC topology with DC-to-DC conversion reduces coil whine and delivers clean power. Builders needing non-ATX form factors or higher wattage should look elsewhere.

Practical limits of the ATX standard

ATX dimensions and mounting points dictate case compatibility, so verify clearance before purchase. The 80 PLUS Gold rating guarantees efficiency at defined load points, but actual savings depend on system power draw and local electricity cost. Modern Standby support requires a compatible motherboard and operating system to function. Cabling length and connector count follow the ATX specification, which may limit routing options in very large enclosures.

Highlights

  • Modern Standby compatibility enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption
  • 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, consistent power and reduces coil whine
  • 850 W ATX power supply supports modern energy-efficient sleep states

Specifications

TypeATX

Questions about this item

How can I confirm the 850W Gold unit is operating correctly after installation?

Verify the fan stays off at idle due to Zero RPM Fan Mode, check that the system wakes instantly from sleep with Modern Standby, and monitor voltages for stable rails under load.

What cables and accessories are included with the 740-053351 power supply?

The unit ships with the ATX power module itself; all modular cables, mounting screws and a power cord must be sourced separately.

Which version of the JPSU-850W-AC-AFI should I choose for a high-efficiency build?

The single listed 850W Gold model delivers 80 PLUS Gold efficiency, LLC resonant topology and DC-to-DC conversion for clean power in one configuration.

Also in this aisle

People compared these

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