Lenovo ThinkPad T400 (2765) - RAM Upgrade Guide
The Lenovo T400 (model 2765) laptop has two memory slots available for RAM upgrades. It can support a maximum of 8GB of memory. The type of RAM compatible with this laptop is DDR3 SDRAM, and it uses a SODIMM form factor, which is a compact design suited for laptops. For best performance, the RAM should have a clock speed of 1066MHz, often labeled as PC3-8500.
Lenovo ThinkPad T400 (2765) Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo ThinkPad T400 (2765) |
| 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 (2765) RAM
How much RAM can I put in a T400?
Maximum is 8GB total - that's using both slots with 4GB sticks each. The laptop has 2 memory slots available.
What type of RAM does the T400 use?
It uses DDR3 SODIMM modules - the smaller laptop-sized memory sticks, not the full-size desktop ones.
What speed RAM should I get for the T400?
Go with 1066MHz (also labeled as PC3-8500). The system might accept faster RAM but it'll just run at 1066MHz anyway.
Can I mix different RAM sizes in the T400?
Yes, you can mix sizes like 2GB + 4GB, but for best performance try to match them. Dual channel works better with identical sticks.
Do I need to upgrade both RAM slots at once?
No, you can upgrade one at a time. If you already have some RAM installed, just add to the empty slot or replace the smaller stick first.
Will faster DDR3 like 1333MHz or 1600MHz work?
It'll physically fit and work, but the T400 will downclock it to 1066MHz. Save money and just get 1066MHz rated sticks.