Got a T400 out of the recycler. CPU upgrade recommendations? T9600 or X9100? Also, I DIY'd the wallpaper for it. : r/thinkpad
Lenovo T400: How to upgrade the RAM - YouTube
Lenovo ThinkPad T400 Hardware and Software Upgrade 2021 - YouTube
Thinkpad T400 CPU Upgrade - YouTube
Amazon.com: wangpeng® CPU Cooling Fan for IBM Lenovo Thinkpad T400 Series : Electronics
Lenovo ThinkPad T400 CPU Heat Sink & Fan 45N6140 45N6141 – LaptopParts.ca
Upgrading a T520-not-so-i with an Intel Core i7 *PICS* - Thinkpads Forum
Upgrading a T520-not-so-i with an Intel Core i7 *PICS* - Thinkpads Forum
AIO-300-Can-I-upgrade-processor - English Community - LENOVO COMMUNITY
New CPU Cooling Fan 3 pin for IBM Lenovo ThinkPad T61 T61P R61 W500 T500 T400 | eBay
Lenovo Thinkpad R61 R61i 42W2677 Laptop Integrated CPU Heatsink With Cooling Fan - WIT Computers
T400 upgrading cpu : r/thinkpad
Ssea New Cpu Fan For Ibm Lenovo Thinkpad T61 R61 W500 T500 T61p T400 Cpu Cooling Fan Mcf-217pam05 42w2461 42w2460 - Laptop Cooling Pads - AliExpress
lenovo thinkpad t400 upgrade ram cpu hard drive and fix cooling system - YouTube
Another Lenovo 3000 N100 bites the dust
Notebook CPU Fan for IBM LENOVO Thinkpad T400 Series | Topmedia BV
Thinkpad-E540-Cpu-upgrade-I3-4000m-to-I5-4340m - English Community - LENOVO COMMUNITY
New CPU and UltraBay battery for the ThinkPad T400 - YouTube
T400/T500 Quad Mod Guide
Lenovo ThinkPad T400 Disassembly (Clean Cooling Fan, Remove Keyboard) | MyFixGuide.com
Nokotion For Lenovo Thinkpad R400 T400 Motherboard Gm45 Ddr3 14 Inch Pc Fru 42w8125 Mainboard Ddr3 Free Cpu - Laptop Motherboard - AliExpress
Amazon.com: New for Lenovo IBM Thinkpad T400 Cooling CPU Fan Heatsink 45N6146 45N6147 : Electronics
Lenovo T510 Upgrades have arrived (CPU + extra memory) | TechPowerUp Forums
UPGRADED Lenovo ThinkPad T400 14" Core 2 Duo, 8GB RAM, 512 GB SSD Samsung – ASA College: Florida
Lenovo ThinkPad T400 Disassembly (Clean Cooling Fan, Remove Keyboard) | MyFixGuide.com
![New to me T400 [advice for upgrades?] : r/thinkpad](https://i.redd.it/koaktk5wip111.jpg "New to me T400 [advice for upgrades?] : r/thinkpad")