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Rectangular ATX power supply unit with 8-pin connector and fan grille

KHACHIMO

KHACHIMO 3020 7020 9020 3670 1700 8Pin 290W power supply

SKU CH-EF39-6VHVP

ATX power supply with 80 PLUS Gold efficiency, 290 W output, 8-pin connector, Zero RPM fan mode, Modern Standby support and resonant LLC topology with DC-to-DC conversion

  • TypeATX
  • 80 PLUS Gold efficiency lowers power draw and heat
  • Zero RPM fan mode stops the fan at low loads for silence
  • Modern Standby support gives faster wake-from-sleep times
  • Resonant LLC with DC-to-DC conversion delivers clean power and reduces coil whine
  • 290 W ATX unit fits 3020 7020 9020 3670 1700 systems with 8-pin connector

KHACHIMO 290W ATX power supply for Dell OptiPlex

The KHACHIMO 290W ATX unit is built as a direct replacement for Dell OptiPlex 3020, 7020, 9020, 3670 and 1700 small-form-factor desktops. It fits the proprietary chassis and connector layout used across those five model families. Buyers who need a standard ATX PSU for a custom build or a non-Dell chassis cannot use this unit.

Single 8-pin connector matches the motherboard

The only output that matters for compatibility is the single 8-pin connector wired to the Dell-specific pinout found on the listed OptiPlex boards. If your motherboard uses a 24-pin ATX header or requires additional PCIe power cables, this supply will not connect.

80 PLUS Gold efficiency

At 80 PLUS Gold certification the unit maintains high efficiency across the load range, reducing waste heat inside the compact case. The Zero RPM fan mode stops the fan completely at low and medium loads, while the resonant LLC topology with DC-to-DC conversion delivers clean power and suppresses coil whine during sustained operation.

Points forts

  • 80 PLUS Gold efficiency lowers power draw and heat
  • Zero RPM fan mode stops the fan at low loads for silence
  • Modern Standby support gives faster wake-from-sleep times
  • Resonant LLC with DC-to-DC conversion delivers clean power and reduces coil whine
  • 290 W ATX unit fits 3020 7020 9020 3670 1700 systems with 8-pin connector

Caractéristiques

TypeATX

Questions sur cet article

What does the 290 W rating mean for a real build?

The 290 W rating is the maximum continuous power the unit can deliver across all rails, so it suits small-form-factor PCs with modest CPUs and no discrete graphics card.

Which ATX standard does this PSU follow and what does that limit?

It follows the ATX form factor, which fixes the physical dimensions and the 24-pin main connector layout, limiting it to cases and motherboards built for standard ATX power supplies.

What clearance and mounting holes does the unit need to fit?

The supply uses the standard ATX chassis footprint with four rear mounting holes, so it fits any case designed for an ATX power supply without extra brackets.

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