Previous post: https://monero.town/post/279294
Finished building and setting up my 4 3900 builds, read my previous post for more details. Figuring out the best way to build them into the shelf was a lot of trial and error, especially with cable management. Took a few hours, but I’m glad it worked out in the end. I was satisfied with my undervolt on the first rig, but unfortunately I was not able to transfer it to the second. I ended up just using dcop and keeping all the cpus stock for uniformity instead of individually overclocking all the machines. Right now they’re doing 12.2-12.4kh/s at 80-84c which is making the room quite toasty, should be nice in the winter (not so much in the summer). Would ROI in about 3 years at the current rate. The top machine is a 5600x which I use as a home server, running monerod and p2pool. I used to run nixos but I eventually switched back to alpine like the other 5 machines. Currently using docker-compose and nixery.
Sorry the text is so dense, feel free to ask questions.
Congrats! Looks quite dapper and clean!
Oh yeah, I wrote a service to change the LED colors based on system temperature so I could easily tell if xmrig crashed or something, but I think the breathing orange just looks better. I then had the idea to have the LEDs dim if CPU temps dropped but it was a lot more complicated that simply changing colors.
Let me know if you know openrgb-rs ig
Super cool setup! It’s giving me a lot of ideas for one I might build later. Thanks for sharing this!
+1 home miner
What’s the total power consumption?
Unfortunately I don’t have a way of measuring it. The CPUs have a 65w tdp so each system is probably pulling a little more than that. I have gold PSUs.
a clamp meter would help assess the amperage drawn*voltage at the wall plug
This is awesome, surprised that you have this low of a ROI. When I looked for parts a year or two ago I couldn’t get lower than 4,5 years and that might have been with free power :P
I live in a US suburb, electricity is thankfully cheaper than most places. As detailed in my first post, I could’ve cut a lot more corners to cut down on costs.
I think electricity is a major factor though, roughly 1/4 of my earnings go to it. Many places have much pricier electric which will easily add years, if not making roi impossible.
Time well spent, looks great!
Thanks!
you should share how you completed this for more educational content online