![T420 CPU upgrade to i7 2860QM quad core. Paste is Thermal Grizzly Kryonaut. More info about upgrade and passive cooling upgrade in comments. : r/ thinkpad T420 CPU upgrade to i7 2860QM quad core. Paste is Thermal Grizzly Kryonaut. More info about upgrade and passive cooling upgrade in comments. : r/ thinkpad](https://preview.redd.it/9smnx2ajcfd71.jpg?auto=webp&s=3f87793d45de729068ac8d17f107079fe6a6b79d)
T420 CPU upgrade to i7 2860QM quad core. Paste is Thermal Grizzly Kryonaut. More info about upgrade and passive cooling upgrade in comments. : r/ thinkpad
![Lenovo Thinkpad T420: Another excellent, inexpensive Linux laptop | Open-Source Routing and Network Simulation Lenovo Thinkpad T420: Another excellent, inexpensive Linux laptop | Open-Source Routing and Network Simulation](https://i0.wp.com/www.brianlinkletter.com/wp-content/uploads/2016/01/lenovo-thinkpad-t420-small.jpg?resize=450%2C334&ssl=1)
Lenovo Thinkpad T420: Another excellent, inexpensive Linux laptop | Open-Source Routing and Network Simulation
![My labour of love. Upgraded T420 with FHD screen + i7-3740QM CPU + AC 7260HMW WiFi/Bluetooth + 500 GB SSD + more : r/thinkpad My labour of love. Upgraded T420 with FHD screen + i7-3740QM CPU + AC 7260HMW WiFi/Bluetooth + 500 GB SSD + more : r/thinkpad](https://i.redd.it/72phl2q4qx861.jpg)
My labour of love. Upgraded T420 with FHD screen + i7-3740QM CPU + AC 7260HMW WiFi/Bluetooth + 500 GB SSD + more : r/thinkpad
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