Lenovo Yoga C640-13IML
Type 81UE 2-in-1 laptop, from 2019 18 hardware reports
Memory
Up to 16 GB
2 laptop-size slots
SSD and charger
Coming next
Checked from separate sources
Upgradable
Yes. 2 slots, up to 16 GB seen working.
It takes DDR4-2666 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR4-2666 260-pin SO-DIMM
- Most seen working
- 16 GB in two or more machines
- Firmware says
- 32 GB maximum (often wrong, so we show what machines run)
- How sure
- 18 of 18 reports show this layout
See 8 GB DDR4-2666 SO-DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 18 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
2 laptop-size slots
Illustration Questions
Can I upgrade the RAM in the Lenovo Yoga C640-13IML?
Yes. 2 slots, up to 16 GB seen working. It takes DDR4-2666 laptop-size sticks (SO-DIMM).
What type of RAM does the Lenovo Yoga C640-13IML use?
DDR4-2666 laptop-size sticks (SO-DIMM, 260-pin).
How much RAM can the Lenovo Yoga C640-13IML take?
Machines in the reports run up to 16 GB. The firmware reports a maximum of 32 GB, a figure that is often wrong.
Is this my laptop?
Check the label on the bottom. It should say Yoga C640-13IML, and the type code starts with 81UE.