Lenovo ThinkPad T400 (2766) - RAM Upgrade Guide
The Lenovo T400 (model 2766) supports RAM upgrades with two memory slots available. It can handle a maximum of 8GB of memory. The type of RAM compatible with this laptop is DDR3 SDRAM, and it comes in the SODIMM format, which is a compact design used in laptops. For optimal performance, the RAM should have a clock speed of 1066MHz, often referred to as PC3-8500.
Lenovo ThinkPad T400 (2766) Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo ThinkPad T400 (2766) |
| 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 (2766) RAM
How much RAM can I put in a T400?
The T400 maxes out at 8GB total. It's got 2 slots, so you can do 2x4GB sticks. Don't bother trying to put in more - the motherboard won't recognize anything beyond 8GB.
What type of memory does the T400 use?
It takes DDR3 SODIMM - that's the smaller laptop memory, not the big desktop sticks. Make sure you get DDR3, not DDR2 or DDR4. They physically won't fit and could damage the slots if you try to force them.
What speed RAM should I get for the T400?
The recommended speed is 1066MHz (also called PC3-8500). You can technically use faster RAM like 1333MHz or 1600MHz, but it'll just run at 1066MHz anyway. So save your money and stick with 1066MHz.
Can I mix different RAM sizes in the T400?
Yeah, you can mix sizes like 2GB + 4GB if you want 6GB total. Just try to match the speed and timings if possible. The system will run, but mixing matched pairs gives better performance.
Do I need to upgrade both RAM slots at once?
Nope, you can upgrade one stick at a time. If you've got 2x2GB and want 8GB, you could replace one 2GB stick with a 4GB first, then do the other one later when you have more cash.