I got a stack of PCS that are very similar if not identical. Third gen i7, 8 gigs of ram, one terabyte hdd, all but one are the same HP model with the same motherboard, etc too. I upgraded the RAM in a few of them, and I have enough spare TB hard drives to put an extra in each. Two have Nvidia GeForce 210 gpus, and the unique one out of the bunch I’ll probably throw in a spare RX 570 I have.
But, what to do with them? Easiest answer is probably sell them all for $75 each but that’s not what we do here, right? Right now I’m assuming they all support w o l and I can easily set up ansible/awx for orchestration. I’m just looking for some fun experiments, projects, or actual uses for this Tower of PC towers
Openstack cluster!
Make a fort
Kubenetes or k3s and some volunteer computing programs. Or mine monaro to offset the power bill of your other servers.
Build a proxmox cluster and teach yourself about high availability services. Tear it down and do it again with xcp-ng. Repeat using more and more complex architectures
Sell them and buy something newer
Seriously though the going rate for old hardware isn’t that different from the newer stuff. Try price matching 3rd gen to 6th or 7th gen.