Lenovo ThinkPad T400 (2769) - RAM Upgrade Guide

The Lenovo T400 (model 2769) laptop supports RAM upgrades with two available memory slots. It can handle a maximum of 8GB of memory. The type of RAM used is DDR3 SDRAM, and it comes in a SODIMM format, which is a compact memory module designed for laptops. For best performance, the recommended RAM speed is 1066MHz, often labeled as PC3-8500.
Lenovo ThinkPad T400 (2769) Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo ThinkPad T400 (2769) |
| Total memory slots | 2 |
| Maximum RAM | 8GB |
| Memory type | DDR3 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 1066MHz (PC3-8500) |
| Voltage | 1.35V - 1.5V |
| Number of pins | 204-pin |
FAQ about Lenovo ThinkPad T400 (2769) RAM
How much RAM can I put in a T400?
Maximum is 8GB total - that's 4GB per slot since you've got 2 memory slots to work with.
What type of memory does the T400 use?
You need DDR3 SODIMM modules. Make sure it's SODIMM (the laptop version) not regular desktop RAM which won't fit.
What speed RAM should I get for my T400?
1066MHz (also labeled as PC3-8500) is the recommended speed. Higher speed RAM will work but will just run at 1066MHz anyway.
Can I mix different RAM sizes in my T400?
Yes you can mix sizes like 2GB + 4GB, but for best performance try to match them. The system will still work with mismatched sizes though.
Do I need to upgrade both RAM slots at once?
No, you can upgrade one slot at a time. If you've got 2GB now, just add another 2GB or 4GB stick in the empty slot.
Will faster RAM like 1333MHz work in my T400?
It'll work but will automatically slow down to 1066MHz to match what the T400 supports. Save money and just get 1066MHz.