How much RAM does the Dell OptiPlex 390 Desktop support?

The OptiPlex 390 Desktop supports up to 8GB of memory across 2 slot(s), up to 4GB per slot.

What storage drives fit the Dell OptiPlex 390 Desktop?

Compatible drive types: SATA 2.5" Hard Drive, SATA 2.5" SSD.

Your system

Dell OptiPlex 390 DesktopStorage Upgrades

Change system Auto-detect

8 guaranteed-fit options

Internal drives

Matched to this machine's drive bays and slots.

SATA 2.5" SSD

This option is out of stock.

The drive bay size is inferred from the system's reported storage interface.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

SATA 2.5" Hard Drive

This option is out of stock.

The drive bay size is inferred from the system's reported storage interface.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

System specifications for Dell OptiPlex 390 Desktop

Specifications reported for the Dell OptiPlex 390 Desktop.

Memory type: DDR3
Memory slots: 2
Maximum memory: 8GB
Max per slot: 4GB
Rated speed: 1333 MT/s
Chipset: Intel® H61
Processor: i5-2400

Software

Free tools from Seifelden — no purchase needed.

Seifelden Upgrade AssistantFree

Checks the drivers on your Dell OptiPlex 390 Desktop, installs the safe updates Windows offers, guides the rest to the official download — and confirms exactly which of the upgrades above your machine has room for.

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Your system

Dell OptiPlex 390 DesktopStorage Upgrades

Change system Auto-detect

8 guaranteed-fit options

Internal drives

Matched to this machine's drive bays and slots.

SATA 2.5" SSD

This option is out of stock.

The drive bay size is inferred from the system's reported storage interface.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

SATA 2.5" Hard Drive

This option is out of stock.

The drive bay size is inferred from the system's reported storage interface.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

System specifications for Dell OptiPlex 390 Desktop

Specifications reported for the Dell OptiPlex 390 Desktop.

Memory type: DDR3
Memory slots: 2
Maximum memory: 8GB
Max per slot: 4GB
Rated speed: 1333 MT/s
Chipset: Intel® H61
Processor: i5-2400

Software

Free tools from Seifelden — no purchase needed.

Seifelden Upgrade AssistantFree

Dell OptiPlex 390 DesktopStorage Upgrades

Choose your upgrade

Internal drives

SATA 2.5" SSD

SATA 2.5" Hard Drive

System specifications for Dell OptiPlex 390 Desktop

Software

Dell OptiPlex 390 DesktopStorage Upgrades

Choose your upgrade

Internal drives

SATA 2.5" SSD

SATA 2.5" Hard Drive

System specifications for Dell OptiPlex 390 Desktop

Software