[Question] What should I look for in a mini PC to upgrade

Howdy All! I've been self hosting some services on a pi 4 for a year or two now and have been fiddling with new services lately. I realized I'm pushing 60% or so of RAM and maxing out the SWAP file while fiddling with things. I currently just set up a nightly reboot as a temporary solution but I'm thinking about picking up a...