https://www.8bitmammoth.com/hp-compaq-dx2420-microtower-computer-dual-core-to-core-2-duo-cpu-upgrade/
HP Compaq dx2420 Microtower Computer Dual-Core to Core 2 Duo CPU Upgrade - 8Bit Mammoth
Nov 8, 2019 - This blog post is about a HP Compaq dx2420 microtower computer Dual-Core to Core 2 Duo CPU upgrade.