HP Compaq dx2400 Microtower

Desktop, from 2008 14 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 DDR2-800 full-size sticks (DIMM).

Slots
4 DIMM slots
Type
DDR2-800 240-pin DIMM
Most seen working
4 GB in two or more machines; one machine runs 8 GB
Firmware says
8 GB maximum (often wrong, so we show what machines run)
How sure
14 of 14 reports show this layout
See 8 GB DDR2-800 DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 14 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 HP Compaq dx2400 Microtower?

Yes. 4 slots, up to 4 GB seen working. It takes DDR2-800 full-size sticks (DIMM).

What type of RAM does the HP Compaq dx2400 Microtower use?

DDR2-800 full-size sticks (DIMM, 240-pin).

How much RAM can the HP Compaq dx2400 Microtower take?

Machines in the reports run up to 4 GB, and one runs 8 GB. The firmware reports a maximum of 8 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 Compaq dx2400 Microtower.