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Rectangular black metal ATX power supply unit with cooling fan and cable bundle

KHACHIMO

KHACHIMO ATX-1245GA1 450W 80 PLUS Gold power supply

SKU CH-0PDR-Y7SX6

An 80 PLUS Gold ATX unit delivering 450 W with Modern Standby support, zero-RPM fan mode and LLC resonant topology for clean, quiet power

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and heat via 80 PLUS Gold efficiency
  • Near-silent operation at low loads with Zero RPM fan mode
  • Clean, stable power delivery from resonant LLC and DC-to-DC design
  • Reduced coil whine for quieter performance under load

Modern Standby Ready PSU

The KHACHIMO ATX-1245GA1 is a 450W ATX power supply certified 80 PLUS Gold for high efficiency. It targets builders who want lower power draw and cooler, quieter operation in a modern desktop. Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power and supports energy-efficient sleep states. The unit is new and designed for standard ATX installations.

Upgrade from lower efficiency units

Replacing an older or uncertified power supply with this Gold-rated model cuts waste heat and reduces coil whine through its advanced topology. The jump is worthwhile when building a system that uses Modern Standby for instant wake and deeper low-power states. Zero RPM fan mode keeps the unit silent at low and medium loads, removing fan noise during everyday tasks. It does not suit builds that need more than 450W of continuous output.

ATX form factor and Gold limits

The ATX form factor fits standard cases but offers no modular cabling, so unused cables remain inside the chassis. Gold certification guarantees 80% efficiency at typical loads, yet efficiency drops at very light or peak loads beyond the certified range. Zero RPM mode depends on internal temperature thresholds and may not activate in poorly ventilated cases. Modern Standby support requires a compatible motherboard and operating system to function.

Highlights

  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and heat via 80 PLUS Gold efficiency
  • Near-silent operation at low loads with Zero RPM fan mode
  • Clean, stable power delivery from resonant LLC and DC-to-DC design
  • Reduced coil whine for quieter performance under load

Specifications

TypeATX

Questions about this item

Will the ATX-1245GA1 fit a standard ATX case?

Yes, the unit follows the ATX form factor so it mounts in any standard ATX chassis using the four rear screws.

Which cables must be connected during installation, and what is the common mistake?

Connect the 24-pin motherboard cable and the 4+4-pin CPU cable; the frequent error is leaving the CPU power unplugged, which prevents the system from posting.

Does the 450W Gold unit have any user-serviceable parts that will need replacement?

No user-serviceable parts exist; the fan uses a Zero RPM mode that stops at low load, reducing wear, so no scheduled maintenance is required.

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