I´ve recently bought the new MicroBT WhatsMiner M64 and trying to find the best/most efficient Liquid cooling/heating Solution.
The main (expensive) idea is:
using only stainless steel components. steel pump, pex pipes, uv-light (anti-bacteria), heat exchanger (fully steel as well) to connect to existing heating system.
The purpose is to deliver 80 degrees hot water for daily usage.
Second (cheaper) idea is to use cheaper components like normal 100$ pump and copper heat exchanger.
The liquid will be distilled water with anti corrosion fluid anyway.
what do you think about these two ideas?
or is it necessary to get a hydro server rack like HeatCore HS05 which has everything integrated already?
cheers!
Satoshi Nakamoto
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I’m pretty sure those require 3phase input though. I’m pretty this what the rep said in Nashville last year. From what he said it would be able to operate fine at 80C output with only like a 70C input and be stable. Imagine though you’d need a pretty good flow rate to achieve this. They are the hottest running water cooled rigs that I’ve found.
I have not ran them myself though may consider it if I get a pool I need to heat because they take like 5kw. Currently working on a offgrid living box and I’m pretty sure I’ll be going with a 3 phase setup though I’d go broke buying the panels to run it lol.
Thanks for your reply!
We got the normal 220V model one phase actually.
let’s see how it will work. we will probably built our own system to test and use this one.
cheers
Has anyone successfully powered a M64 using a 20A C19 PDU outlet?
Thinking about how to best power this thing up without a specialized cooling cabinet.
You could definitely build your own solution with the right pump and heat exchanger. I think the beauty of the HeatCore H series is the complete package is already setup for this use case.
What I’m curious about is how the system ramps down power or cycles on and off to match your heat demand.
For example, in a hot water heater setup, as the tank heats up, the miner MUST reduce it’s wattage or total heat delivery (on vs off time) or else it will start to choke, as the heat can no longer be absorbed by the tank.
I’ve been thinking about trying this heat radiator with an integrated pump to use the M64 in an air based heating system.
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Seems like a pretty affordable way to test. You can only control the fan speed though. To get consistent 80C output (for research & testing) some kind of thermal regulation would be needed.
I think the HS05 has this, but its pretty expensive just for testing.
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Just got my hands on a M64 as well and looking to build out the integrated solution… Didn’t know you could get your hands on a HS05 yet? What was the price point your seeing?
I would say you would be fine with a plastic hot water pump for the hydro loop as for heat exchangers yes no copper is the word on the street, trying to find a good solution to this apart from TI…
Tyler hits the nail on the head with all these solutions is how do the control work to maximize heat and profit with minimizing mining with no heat demand…
If you don’t have a PDU with the SA2-30 plug I think your only option is to splice in a c20 plug… Haven’t found a c20 to sa2-30 converter yet could be another option!
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Thank you guys for all the replies!
we didn’t try the C20 to sa2-30 converter yet but this is probably the way to go!
the hashrate demand/power usage is still pretty interesting (also the whole software and device). We will see and let you know once we tested.
maybe someone else is faster 
looking forward to see this bad boy finally in action
cheers
C20 is typically rated for 16A (CEE) and max 20A.
The M64 is labeled for up to 25A, which seems high.
Our PDUs safely deliver 20A, giving us ~4600W peak — should be enough, but not 100% sure why the M64 is rated that high, given its peak power is 4099W.
Hopefully, splicing in our own adapter will work — let’s see.