Lenovo ThinkPad T400 (6473) - RAM Upgrade Guide
The Lenovo T400 (6473) laptop has two slots available for memory upgrades, allowing for a maximum capacity of 8GB. It uses DDR3 SDRAM as the memory type, which comes in a small outline dual inline memory module (SODIMM) format. For optimal performance, the memory should have a clock speed of 1066MHz, often referred to as PC3-8500.
Lenovo ThinkPad T400 (6473) Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo ThinkPad T400 (6473) |
| 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 (6473) RAM
How much RAM can I put in a T400?
Maximum is 8GB total - that's using both memory slots with 4GB modules in each one.
What type of memory does the T400 use?
It uses DDR3 SODIMM modules - the smaller laptop-sized memory sticks, not the full-size desktop ones.
How many memory slots does the T400 have?
Two slots total. You can run with just one populated or fill both for dual-channel performance.
What speed RAM should I get for the T400?
1066MHz (PC3-8500) is the recommended speed. Higher speed modules will work but will just run at 1066MHz anyway.
Can I mix different size memory modules in the T400?
Yes, you can mix sizes like 2GB + 4GB, but for best performance try to match them. Dual-channel only works with matched pairs.
Where are the RAM slots located on the T400?
Under the memory access panel on the bottom of the laptop. Usually just one or two screws to remove.