I got an free 5810 from work and I'm debating upgrading it and use for my homelab (Unraid Server) or buying a new cpu/mb like the I9-12900K deal from Microcenter.

System Specs

CPU E5-1620 V3 Memory 8 sticks of 4GB DDR (Non ECC) GPU Nvidia Quadro K620 2GB PSU 425 Watt

The MB is AL3610 mode

My old Unraid box is an i7 4770 with 32GB of Ram.

I'm looking at using it for Plex, maybe BlueIris, and storage for the collection of DVD's/CD's I keep telling the wife I need to rip and then will get rid of. I'd like to run Pi-Hole along with a couple Windows Servers for (AD/DNS mostly to learn), and Transmission.

My question is what should I upgrade or would it make more sense to just spend that money on something else.