well here is one example:

 
i finally finished this two month old project and i gotta say
 


 
it feels great knowing that what was once simply a passionate hobby can now become something much more.
 
now a little into the details, each machine follows my guide i posted a while back though with some slight differences in software. this time i am using a different flavor of linux coupled with custom code to automate and monitor the process, which is still under development. but internally each machine is virtually identical and look like this:
 

 
each tower is plugged into 208V source as the subpanel is 120V 3 phase and all together they are pulling ~7.2 KW. the higher voltage nearly halves the amperage going to each power supply allowing for better efficiencies. the towers are against an air wall, where fresh cooler air is blown in and exhausts out the back of all the towers for uniform airflow to prevent recirculation of hot air. they are not under A/C and rely strictly on lots of airflow, enough fan noise to be over 80dB. and with an empty rack beside the populated one i can easily double production with very little effort.
 
that random VGA monitor is one i had lying around for years and finally came in handy as i needed a VGA monitor to connect to my 32 port KVM Switch i got off ebay for $40. this thing is awesome and allows me to individually control any machine via a single mouse/keyboard/monitor. the racks themselves are cheap things from lowes and make great shelves for holding the towers as well as a lot of ways to manage all the power/network/KVM cables.

Wow man that's awesome, I hope it all works out well with no issues!

mrhankey946
Wow man that's awesome, I hope it all works out well with no issues!

the only real issue i am constantly running into are the F@H clients stalling on an upload/download and needing to be restart every now and again. really wish we would get a new and improved client...
 

bcavnaugh
"well here is one example:" Still Ming IMO  Should have gone under Cryptocurrency

well that pic with them all on the boxes was for a hardware test to making sure there wasn't any parts to RMA before i put it all into the towers. but even so i had to RMA two parts after the fact anyway.

Be sure to show us what a 30 million PPD electric bill looks like if you can, if you're drawing from the grid.

Nice!

yea, those towers alone cost ~$208 to run a month.

Its actually 28x 1080ti as one of those boxes is a dedicated control box. The case itself is the same on my linux guide where it has 360mm front intake, so all air goes in the front out the back, easy to see on the inside case pic above. I also use high cfm delta fans and because of this no case really runs any hotter than the others.

That air wall is basically a box with a screen on the face of it with a large blower pressurizing the whole thing. The air is then pulled into the cases from the intake fans and out the back. Normally you do not put things like this against a wall but I had no choice and i needed to find a good way to control the airflow.

1x slots DO bottleneck F@H at least somewhat - and I don't want to THINK about what the CPU bottleneck would be like trying to run more than about 8 x 1080ti cards on it.
 
You HAVE to go with a "riser" rig type build to make that particular motherboard worthwhile.
 
I just ordered one to experiment with as the base of a mining rig - though the initial planned build-out it's kinda overkill for, I like the built-in multi power supply management and I do have a longer-term plan to more fully use the 1x slots.
 
 

oh that control box is much more than simply a F@H client. its my access to the farm from the outside world and it'll be access to a webapp for monitoring/control. i am working on writing a lot of fancy code to make running it simple and convenient.