Refurbished Grade A Dell Precision 5810 Tower - Xeon E5-1607 v4 - 3.10ghz/ 32gb Ram / 4 x 500gb HDD / Nvidia Quadro M2000 4gb / No OS

Picked up one of these for work from ComputersInLeeds (now ComputerHive) - paid about £140 and came with 64GB DDR4 ECC RAM, use it at work, added a half-decent GPU to drive multiple monitors and upgraded the CPU to an E5-2690v4 for £20. They don't use a lot of power at idle, lots of space inside to work on too. Definitely wants an SSD, not 4x 500GB HDD for the OS at least.

Actually quite good as a starter workstation for learning how to video edit or make music.
Cost is low if you consider most people try to spend thousands for max performance to start something they abandon a month later and are left with pricey equipment to check mail and watch YT.
For 90% of people this deal is bad and they are right depending on how they going to use it,
for other 10% this deal will be even better to not break a bank.
Some of us spend £10k or more for a car, and others will spend less than a £1k to have a transport from point A to B.
Voted HOT, thanks OP

Would this run the original Tomb raider?

Lab box with a bare metal hypervisor like Proxmox or VMWare ESXi. Set it up to wake with WoL and then use a script to shut it down or use the control page of the hypervisor. NVMe PCI card and a single stick for primary builds and SSDs for secondary, spinners for backups. Given that it's only powered on when you're actually using it for lab work its overall power draw isn't as critical as one would normally expect especially if you factor in £/w Vs cost of newer hardware or other solutions. This can give you access to a range of OS builds, auxiliary processing grunt or a range of uses if this suits your needs. Good for anyone playing with builds or technical concepts (for instance just found a nasty problem involving Debian, Docker, OpenSSH and networking this way, prototypes took days less to set up overall).
Spin up time for a VM can be much lower and you can snapshot, you can also run this separately to your main system so you can run something in the background (e.g. recompression, compilation, etc.) while you game on your main rig. The split system solution like this really works well for certain use cases, been doing this over 15 years myself.

Not bad if you sell the GPU & downgrade a fair bit. However I'd personally look on eBay - managed to score a HP Z640 with an 18-core Xeon E5-2695 v4 for ~£170. CPU TDP not far off this one either.

Better deals are out there if you're after CPU performance on the cheap.