HP DC5800

Desktop, from 2008 2 hardware reports

Memory

Listed by the firmware

Only one machine has reported its memory so far, so this answer rests on a single example. Check the label or open the panel before you buy.

Upgradable

Yes. 4 slots, up to 8 GB seen working.

It takes DDR2-800 full-size sticks (DIMM).

Slots: 4 DIMM slots
Type: DDR2-800 240-pin DIMM
Most seen working: 8 GB in the one machine reported
How sure: 1 of 1 report show this layout

See 8 GB DDR2-800 DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 1 hardware report of this desktop. Sources and method. Updated 10 Nov 2026.

4 full-size slots

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SSD

Check the drive you have.

The reports don't show this model's drive type yet. Look at the drive in it: a 2.5-inch box, about 7 by 10 cm, is SATA. A small stick is M.2, and its label says NVMe or SATA and its length (2230, 2242 or 2280).

Drive type: Check your current drive

HP DC5800 SSD on AmazonOpens an Amazon search by model. Match the type and length to your drive.

How to tell a drive's type. Sources and method. Updated 10 Nov 2026.

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Power supply

Check the label on the power supply.

We don't have this model's power supply rating. It is printed on the supply's sticker, inside the case next to its fan. Prebuilt desktops often use a supply shaped for their case, so match the shape and the plugs as well as the watts. Small cases take a slim supply.

Rating: On the supply's label

HP DC5800 power supply on AmazonMatch the shape, the plugs and the watts to the supply you have.

How to read a power supply label. Sources and method. Updated 10 Nov 2026.

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Processor

It takes processors for the LGA775 socket.

Prebuilt desktops often only take processors from the generation they shipped with, so stay with the ones listed.

Socket: LGA775
How sure: From 0 report

See LGA775 processors on AmazonOpens an Amazon search for this socket. Check the board's CPU support list.

From the processor records in 0 hardware report. Sources and method. Updated 10 Nov 2026.

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Graphics card

It has a full-length (x16) slot for a graphics card.

100% of these machines report a small case. A small case takes low-profile cards only, and its power supply may not feed a card that needs its own power cable.

x16 slots: At least 1, listed by the firmware
Case: 100% report a small case

See low-profile graphics cards on AmazonMeasure the slot and the power supply first.

From the firmware's slot table. Sources and method. Updated 10 Nov 2026.

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Questions

Can I upgrade the RAM in the HP DC5800?

Yes. 4 slots, up to 8 GB seen working. It takes DDR2-800 full-size sticks (DIMM).

What type of RAM does the HP DC5800 use?

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

How much RAM can the HP DC5800 take?

Machines in the reports run up to 8 GB.

What processor can I put in the HP DC5800?

It takes processors for the LGA775 socket. Prebuilt desktops often only take processors from the generation they shipped with, so stay with the ones listed.

Can I add a graphics card to the HP DC5800?

It has a full-length (x16) slot for a graphics card. 100% of these machines report a small case. A small case takes low-profile cards only, and its power supply may not feed a card that needs its own power cable.

Is this my desktop?

Check the model name on the front or the label of the case. It should read DC5800.