Lenovo ThinkPad T400 (2773) - RAM Upgrade Guide
The Lenovo T400 (2773) laptop has two slots available for memory upgrades, allowing for a maximum capacity of 8GB. It uses DDR3 SDRAM as the type of memory, which comes in a small outline dual inline memory module (SODIMM) format. For optimal performance, the recommended clock speed for the RAM is 1066MHz, often labeled as PC3-8500.
Lenovo ThinkPad T400 (2773) Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo ThinkPad T400 (2773) |
| 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 (2773) RAM
How much RAM can I put in a T400?
Maximum is 8GB total - that's 4GB per slot since there are 2 slots. Pretty decent for an older machine.
What type of memory does the T400 use?
DDR3 SODIMM - the laptop-sized sticks, not the full desktop ones. Make sure you don't accidentally buy desktop RAM.
What speed RAM should I get?
1066MHz (PC3-8500) is recommended. You might find 1333MHz sticks work too, but they'll just run at 1066 anyway.
Can I mix different RAM sizes?
Yeah, you can do like 2GB + 4GB if you want 6GB total. Just try to match speeds if possible for best performance.
Do I need to replace both sticks at once?
Nope, you can upgrade one at a time. Check what's already in there first - might already have one 4GB stick and just need another.
Is the RAM upgrade worth it on this old laptop?
If you're running less than 4GB, absolutely. Going from 2GB to 4GB or 8GB makes a huge difference for web browsing and multitasking. Above 4GB helps if you keep lots of tabs open or run heavier programs.