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Amazon.com: CPU Cooling Fan with Heatsink for Lenovo IBM ThinkPad T420 T420i 04W0408 UDQFVZR01FFD 04W0410 04W0628 : Electronics
![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
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