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Silver metal rectangular PSU with fan grille and power socket

DELL

DELL 265W MT Power Supply GVY79 APFC HIPRO

SKU CH-CEKR-SDCTK

A 265W mini-tower PSU for OptiPlex 390, 790 and 990 with 24-pin ATX, 4-pin P4 and four SATA connectors

  • Genuine Dell PSU for OptiPlex 390 790 990
  • 265W max power supports full MT builds
  • APFC design improves efficiency and stability
  • 24-pin plus 4-pin CPU and four SATA connectors
  • Multiple part numbers YC7TR 9D9T1 GVY79 053N4 D3D1C match original unit

Genuine Dell 265W MT Power Supply

This genuine Dell 265W unit is built for Optiplex 390, 790 and 990 Mini Tower systems. It replaces part numbers GVY79, 053N4, D3D1C, 9D9T1 and YC7TR. The supply delivers 265W maximum power through a standard 24-pin ATX connector, a 4-pin P4 motherboard connector and four SATA power connectors. It fits the original chassis without modification.

Sustained load behaviour

The supply uses active power factor correction to maintain stable output during continuous operation. Rated at 265W maximum, it supports typical office workloads and integrated graphics configurations without voltage droop. Builders running discrete graphics cards or multiple drives should verify total system draw against the 265W limit before deployment.

Installation notes

Mounting holes align with the Optiplex Mini Tower chassis and the connector set matches the factory harness. The 24-pin ATX and 4-pin P4 plugs key to the motherboard, while the four SATA connectors serve drives directly. Systems requiring PCIe power cables or additional 4-pin peripheral connectors cannot use this unit without adapters.

Highlights

  • Genuine Dell PSU for OptiPlex 390 790 990
  • 265W max power supports full MT builds
  • APFC design improves efficiency and stability
  • 24-pin plus 4-pin CPU and four SATA connectors
  • Multiple part numbers YC7TR 9D9T1 GVY79 053N4 D3D1C match original unit

Specifications

BrandDELL

Questions about this item

How much heat and noise does the 265W PSU produce when running continuously in an Optiplex 790?

The unit delivers up to 265W; actual heat and fan noise depend on the load drawn by your specific Optiplex 790 configuration.

Which motherboard power connectors must my Optiplex 390 already have for this PSU to fit?

Your board needs a 24-pin ATX connector and a 4-pin P4 connector, both supplied by the PSU.

Will the four SATA power plugs on this unit run the mechanical drives I kept from my older Optiplex 990?

Yes, the PSU provides four standard 4-pin SATA power connectors compatible with those drives.

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