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Rectangular metal PSU in multicolour finish with standard ATX connectors

DELL

DELL 79WPJProduct ATX 12V 200 W Power Supply

SKU CH-TKHE-3QDB5 MPN 79WPJProduct

ATX 12V power supply delivering 200 W with 3.3 V and 12 V rails for Dimension 2400, 4200, OptiPlex GX50 and GX150 desktops

  • Max wattage200 W
  • Product colorMulticolor
  • Product typeATX 12 V
  • Reliable 200 W output for stable system power
  • Dual 3.3 V and 12 V rails support legacy components
  • Fits Dimension 2400 and Dimension 4200 desktops
  • Compatible with OptiPlex GX50 and GX150 workstations
  • Genuine Dell 79WPJ part ensures exact replacement

ATX 12V 200 W Desktop Power Supply

This Dell ATX 12V unit delivers 200 W of power to compatible desktop systems. It provides 3.3 V DC and 12 V DC output rails for internal components. The supply is designed as a direct replacement for specific Dell workstations.

Suits Dimension 2400, 4200, OptiPlex GX50.

This unit fits the listed Dell Dimension and OptiPlex models requiring an ATX 12V form factor. Builders working on other chassis or modern motherboards should verify connector layout and mounting points first. Systems demanding higher wattage or different voltage rails need a different power source.

200 W maximum output power

The 200 W rating defines the total power available for the motherboard, drives and expansion cards. Exceeding this limit will cause instability or shutdown. Confirm your system power draw stays within this ceiling before installing.

How it compares

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

Price $99.99
Cheaper than about 67% of the 10,869 comparable items (median $142.99).
Max wattage 200 W
Lower than about 97% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameDELL
Product colorMulticolor
Product typeATX 12 V
Power
Max wattage200 W

Questions about this item

What does the 200 W rating mean when this unit is installed in a desktop?

It is the maximum continuous output the supply can deliver across the 3.3 V and 12 V rails combined.

Which power standard does the 79WPJ follow and what does that limit in practice?

The unit follows the ATX 12V design, so it provides only the 3.3 V and 12 V outputs required by that specification.

Will this power supply fit a Dimension 2400 chassis?

Yes, the 79WPJ is listed as compatible with the Dimension 2400, Dimension 4200, OptiPlex GX50 and OptiPlex GX150.

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