They will both need a motherboard, a drive, a chassis and a PSU as well to get the build moving forward and even powering up. Jokes aside, what does the rest of your system build look like? List specs like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
How much are you spending for all of the components and where are you located?