Lenovo ThinkPad T470s - RAM Upgrade Guide

The Lenovo T470s laptop has two memory slots for RAM, but only one of these slots can be upgraded by the user. The maximum amount of memory the device can support is 20GB, with up to 16GB possible in the accessible slot. It uses DDR4 SDRAM, which comes in a small outline dual inline memory module (SODIMM) format. For optimal performance, the recommended RAM speed is 2133MHz, also referred to as PC4-17000.
Lenovo ThinkPad T470s Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo ThinkPad T470s |
| Total memory slots | 2 (1 not upgradeable) |
| Maximum RAM | 20GB (up to 16GB in user accessible slot) |
| Memory type | DDR4 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 2133MHz (PC4-17000) |
| Voltage | Low - 1.2V |
| Number of pins | 260-pin |
FAQ about Lenovo ThinkPad T470s RAM
How much RAM can I add to a T470s?
You can add up to 16GB in the single accessible slot. The laptop has 4GB soldered on the motherboard that can't be changed, so the maximum total is 20GB (4GB fixed + 16GB you add).
What type of RAM does the T470s use?
It uses DDR4 SODIMM modules - the smaller laptop-sized RAM sticks. Make sure to get 2133MHz speed (also labeled as PC4-17000).
Can I upgrade both RAM slots on the T470s?
No, only one slot is accessible for upgrades. The other slot has 4GB permanently soldered to the motherboard. This is pretty common in thin laptops to save space.
Will faster RAM like 2400MHz or 2666MHz work?
Yes, faster RAM will work but it'll run at 2133MHz anyway. The system will automatically downclock it to match what the processor supports. Save money and just get 2133MHz.
What happens if I install 32GB RAM?
It won't work - the system only recognizes up to 16GB in the upgradeable slot. Installing 32GB would be a waste as the laptop will either not boot or only use 16GB of it.