Lenovo Thinkstation P620's make excellent #homelab machines.

This one has a 64 Core Threadripper Pro (128 threads) & 256 GB ram. it also has other cool features such as dedicated management and some awesome internal modular cable management.

I managed to score this pretty cheap of eBay (it's based on the older 3995 WX CPU) and have another one due this coming week (for a HA pair). I'm pairing these with a mellanox 25 GigE fibre card, aggregation switch and a 25 GigE capable synology providing NFS exports for VMs n such.