Lenovo ThinkPad T450s
Type 20BX Laptop, from 2015 29 hardware reports
Memory
Up to 20 GB
2 laptop-size slots
SSD and charger
Coming next
Checked from separate sources
Upgradable
Yes. 2 slots, up to 20 GB seen working.
It takes DDR3-1600 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR3-1600 204-pin SO-DIMM
- Most seen working
- 20 GB in two or more machines
- Firmware says
- 16 GB maximum (often wrong, so we show what machines run)
- How sure
- 29 of 29 reports show this layout
See 8 GB DDR3-1600 SO-DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 29 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 ThinkPad T450s?
Yes. 2 slots, up to 20 GB seen working. It takes DDR3-1600 laptop-size sticks (SO-DIMM).
What type of RAM does the Lenovo ThinkPad T450s use?
DDR3-1600 laptop-size sticks (SO-DIMM, 204-pin).
How much RAM can the Lenovo ThinkPad T450s take?
Machines in the reports run up to 20 GB. The firmware reports a maximum of 16 GB, a figure that is often wrong.
Is this my laptop?
Check the label on the bottom. It should say ThinkPad T450s, and the type code starts with 20BX. Other type codes share this name: 20BW.