this post was submitted on 21 Sep 2025
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Just ordered a used HP EliteDesk 800 G3 SFF (3.6GHz Intel Core i7-7700, 8GB DDR4 RAM, 256GB SSD) off EBay to replace my Apple Mac mini "Core i7" 2.3 (Late 2012/Server). Hoping to put 32GB of RAM in it, 1TB NVMe boot drive and maybe a 3.5” HDD for media instead of using an external drive. Might move to NixOS (I’d like to learn how to administer Nix even though it’s very complicated sometimes) and Podman, instead of using Proxmox and Docker Debian VMs and LXC containers.
Any advice and guidance appreciated!
I got two of those for 100$ USD for the purpose of hosting openwrt in proxmox LXC containers. One thing I noticed is they have no cooling. I put a 10 GBe mellanox card in it plus a very low end radeon gpu and it gets quite hot in there. My recommendation, instead of trying to embiggen it as much as possible, by putting 2 more sticks of ram and the biggest cpu, I would recommend just buying another. The performance boost per dollar isn't as much as the performance capacity of a second, third or 4th machine.
Thanks for the recommendation, I got this one for just over $100 after tax. Space is an issue for me, so more machines isn’t the best and I can always keep the Mac Mini chugging if needed. I’ll probably only do the HDD/SSD and RAM upgrade, but it’s definitely worth keeping in mind if I throw a new NIC or GPU in it. I am thinking of putting a Noctua fan on the CPU cooler to keep it quieter and cooler!