HP Z620 Workstation
Desktop, from 2012 41 hardware reports
Memory
Up to 192 GB
12 full-size slots
Drives and power
Coming next
Checked from separate sources
20 of 41 machines sold under this name show 8 slots instead of 12. That is usually the smaller case. Count the slots inside yours before you buy.
Depends on the configuration
It depends on the configuration.
The reports show more than one memory layout for this desktop. Check the label or the system information before you buy.
- Slots
- 12 DIMM slots
- Type
- DDR3-1333 240-pin DIMM
- Most seen working
- 192 GB in two or more machines
- Firmware says
- 256 GB maximum (often wrong, so we show what machines run)
- How sure
- 21 of 41 reports show this layout
See 16 GB DDR3-1333 DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 41 hardware reports of this desktop. Sources and method. Updated 9 Nov 2026.
12 full-size slots
Illustration Questions
Can I upgrade the RAM in the HP Z620 Workstation?
It depends on the configuration: the reports show more than one memory layout for this desktop.
What type of RAM does the HP Z620 Workstation use?
DDR3-1333 full-size sticks (DIMM, 240-pin).
How much RAM can the HP Z620 Workstation take?
Machines in the reports run up to 192 GB. The firmware reports a maximum of 256 GB, a figure that is often wrong.
Is this my desktop?
Check the model name on the front or the label of the case. It should read Z620 Workstation.