52 boxes across 3 providers. This one was my oldest, bought 2014 from some guy on a forum that does not exist anymore. Paid $89/month for 32GB ECC, 2x3TB, 1Gbps. Ran pfsense, then proxmox, then it just sat there doing backups for 6 years.
The math finally killed it. $89 for 32GB DDR3, 125W idle, versus $24 at RackNerd for a N100 with 16GB DDR5, 8W idle. The N100 is slower per thread but the power savings alone... I pay 14c/kWh. 125W * 24 * 365 * 0.14 = $153/year just to keep the thing warm. The N100 costs $25/year.
Still sad though. That E3 never failed. Not once. Rebooted every 6 months for kernel updates and that was it. Gave it to my little brother for his first server. He is 16 and thinks 32GB is "huge". Kids.