Every motherboard I've used resets the ram speed, and everything else back to default when I've swapped the CPU (or even just removed it sometimes). But if your board supports saving "profiles" those may be saved, and if you can save them to a flash drive then even better.
But honestly just take a picture on your phone of the memory timings screen.
I drove a Nissan Almera (basically altima but with a 1.6 liter engine) on roads worse than most pickups have ever driven.