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RAM for Dell OptiPlex 5090 Tower (5090)

Model Years: 2021–2022

Max RAM: 128GBRAM Slots: 4RAM Type: DDR4 3200MHz
✓ RAM Upgradeable

Quick answer

Our data matches the Dell OptiPlex 5090 Tower (5090) with Crucial 64GB Kit (2x32GB) DDR4-3200 DIMM (DDR4, DIMM, 3200MHz, 64GB); Crucial 32GB DDR4-3200 DIMM (DDR4, DIMM, 3200MHz, 32GB); Kingston 32GB DDR4-3200 DIMM (DDR4, DIMM, 3200MHz, 32GB), plus 5 more options listed below.

Supported memory profile: DDR4, DIMM, 3200MHz, up to 128GB max, 4 slots.

Before buying, confirm your exact model number, memory generation, form factor (DIMM), speed, and maximum supported capacity. Live eBay listings are shown below and may change.

Compatible RAM for the Dell OptiPlex 5090 Tower

Listings and prices are pulled from eBay and may change. Always verify compatibility before purchase. Listings are updated daily.

Frequently Asked Questions

What RAM fits the Dell OptiPlex 5090 Tower (5090)?

Based on our compatibility data, the Dell OptiPlex 5090 Tower (5090) supports DDR4, DIMM, 3200MHz, up to 128GB max, 4 slots. Matched modules include Crucial 64GB Kit (2x32GB) DDR4-3200 DIMM (DDR4, DIMM, 3200MHz, 64GB); Crucial 32GB DDR4-3200 DIMM (DDR4, DIMM, 3200MHz, 32GB); Kingston 32GB DDR4-3200 DIMM (DDR4, DIMM, 3200MHz, 32GB); Crucial 16GB DDR4-3200 DIMM (DDR4, DIMM, 3200MHz, 16GB); Kingston 16GB DDR4-3200 DIMM (DDR4, DIMM, 3200MHz, 16GB); Crucial 16GB DDR4-3200 SODIMM (DDR4, SO-DIMM, 3200MHz, 16GB); Crucial 8GB DDR4-3200 DIMM (DDR4, DIMM, 3200MHz, 8GB); Kingston 8GB DDR4-3200 DIMM (DDR4, DIMM, 3200MHz, 8GB). Always confirm your exact model number before purchasing.

How do I verify RAM compatibility?

Check that your device label or manual shows 5090 (or OptiPlex 5090 Tower). Confirm memory generation, form factor (DIMM), speed, slot count, and maximum supported capacity match the specs on this page before ordering.

Can I mix RAM speeds or capacities?

Many systems run best with matched pairs (same capacity and speed). Mixing capacities or speeds may work but can force lower speeds or single-channel mode — check your OEM documentation.

Are these listings live and current?

Current eBay listings for compatible RAM modules are shown below. Prices and availability change frequently — verify listing details and seller ratings before you buy.

RAM Upgrade Guide for the Dell OptiPlex 5090 Tower

This device uses DDR4 at 3200MHz. Maximum supported capacity is 128GB.

Always power off and unplug your device before installing RAM. Ground yourself to avoid static discharge.