Lenovo ThinkStation C20 4263BA7

Desktop, from 2011 4 hardware reports
Memory
Up to 12 GB
12 full-size slots
Drives and power
Coming next
Checked from separate sources
Upgradable

Yes. 12 slots, up to 12 GB seen working.

It takes DDR3-1066 full-size sticks (DIMM).

Slots
12 DIMM slots
Type
DDR3-1066 240-pin DIMM
Most seen working
12 GB in two or more machines; one machine runs 48 GB
Firmware says
384 GB maximum (often wrong, so we show what machines run)
How sure
4 of 4 reports show this layout
See 8 GB DDR3-1066 DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 4 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 Lenovo ThinkStation C20 4263BA7?

Yes. 12 slots, up to 12 GB seen working. It takes DDR3-1066 full-size sticks (DIMM).

What type of RAM does the Lenovo ThinkStation C20 4263BA7 use?

DDR3-1066 full-size sticks (DIMM, 240-pin).

How much RAM can the Lenovo ThinkStation C20 4263BA7 take?

Machines in the reports run up to 12 GB, and one runs 48 GB. The firmware reports a maximum of 384 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 ThinkStation C20 4263BA7.

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