Look forward to chatting, love to hear from others on how they implemented, even after the fact. My expansion will never grow above 200,000 kh/s for GPUs.
I agree that it'll be a fun time once GPU mining becomes uneconomic, and everyone starts posting photos. For that matter, it would be interesting to get together a group of large mining farm builders over a beer to "shoot the shit" after this is all over. There's a lot of interesting engineering and tricks of the trade that people have developed for large mining farms.
You've never run a farm judging by your comments. Let me give you a clue why it's unique for a single location: Heat & Power.
As best I can tell, most of the people here have just never seen what a ~1MW service entrance looks like, or are imagining something massive and expensive. So here, I ran outside with my camera just before dark in an attempt to educate people on what a service entrance of this size actually looks like. I'm not going to post any mining rig photos for the reasons I noted a few posts back. However, I'll post service entrance photos since there isn't exactly anything in these photos that will help anyone else build a GPU farm. Our service entrance in the below photos has a maximum capacity of 900kW (2500A x 208VAC x 1.73):
The transformers out on the pole. I bet no one would take a second look or think anything was at all unusual if they saw this next to any warehouse or office building:
Electrical distribution room:
The 4th panelboard contains 3 2500A fuses and the disconnect. I can't take a photo of the disconnect and fuses, as this panelboard is sealed by the power company:
The other 3 panelboards contain an assortment of 100A, 200A, 400A, 600A and 1000A breakers that feed the other subpanels throughout the building:
Here's a 400A disconnect ahead of one of the subpanels that fanout power to each row of racks:
Note: I Photoshopped all of these (well, GIMP'd them). I resized them down to a reasonable size, cropped them to the area of interest, and in the case of the power pole photo, removed the PUC tag # for the pole and the serial # on the transformer (I value my privacy, and any lineman in half of the western US could look up the exact location of that power pole otherwise).
And no, I will not post rig photos until after GPU mining of all cryptos becomes uneconomic and the contents of the photos will not aid anyone else in building their GPU farm. However, it's not going to take long for someone to calculate an upper bound of how high our hash rate could be for the amount of power we have available. It's between 0kH/sec and that upper bound, that's all you'll get for now.
That's certainly not in "unlimited budget" territory. I trust that the above photos look significantly different than what everyone else was envisioning when talking about a service entrance in this size range? Were you guys envisioning a substation and switchyard or something?
