Dell OptiPlex GX620
Desktop, from 2005 35 hardware reports
Memory
Up to 4 GB
4 full-size slots
Drives and power
Coming next
Checked from separate sources
Upgradable
Yes. 4 slots, up to 4 GB seen working.
It takes DDR-533 full-size sticks (DIMM).
- Slots
- 4 DIMM slots
- Type
- DDR-533 DIMM
- Most seen working
- 4 GB in two or more machines; one machine runs 8 GB
- Firmware says
- 4 GB maximum
- How sure
- 35 of 35 reports show this layout
See 8 GB DDR-533 DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 35 hardware reports of this desktop. Sources and method. Updated 9 Nov 2026.
4 full-size slots
Illustration Questions
Can I upgrade the RAM in the Dell OptiPlex GX620?
Yes. 4 slots, up to 4 GB seen working. It takes DDR-533 full-size sticks (DIMM).
What type of RAM does the Dell OptiPlex GX620 use?
DDR-533 full-size sticks (DIMM).
How much RAM can the Dell OptiPlex GX620 take?
Machines in the reports run up to 4 GB, and one runs 8 GB. That matches the 4 GB maximum the firmware reports.
Is this my desktop?
Check the model name on the front or the label of the case. It should read OptiPlex GX620.