So it's interesting you bring this up... I recently purchased a pile of these old servers and am looking for someone skilled enough to upgrade the 3,1 with a new bootrom like what we did for the 5.1 bootrom upgrade.
I found a person that upgraded the fans with much quieter versions that did wonders for the sound.
I also did some research here and found (from this video)
that the Xserve lineup doesn't suck as much power as people think. I may be wrong on that so please share your evidence below.
If we find a way to upgrade the fans for sound, we know they dont suck as much power as people think, we upgraded them to a new custom bootrom with support for the x5690 CPU, 192 GB of RAM and the ability for NVME boot... these things may actually have life still.
Let's check the list real quick...
Loud (New Fans),
Room Heater (Doesn't suck as much power as people think. Probably wrong on that one),
Outdated OS (With the custom bootrom it would support newer versions of macOS),
Easily run lots of VM's (Load it with proxmox and it will do the trick. Which btw is 100% possible)
Does anyone on here have the ability to work on bootroms?