Just got a batch in of the S19 Jpro+'s and the suns of bitches have gone back to solder on heat sinks.   One arrived with a heat sink jingling in the case with a piss poor solder and chip guts on it.

Guess I'll find out, power'd up a couple weeks ago.

We've got another small spot that can handle 50 miners or so.   Its at 480/277 though and the S19J Pro+'s would plug right in and would cost very little infrastructure to speak of.

Yet I'm really struggling with buying miners at 27.5J/T vs the 21.5 for the XP's. 

My gut is telling me at the rate of difficulty adjustment for all this fucking hash that keeps coming out of the woodwork that you better be at 21.5 or better or your just going to get squeezed out.

Anyone put any spreadsheets together proving it?    Sure bitcoin blasts off who cares but I'm just not feeling it.

https://eshop.powerfactoryinc.com/
100% SCAM.  Avoid at all cost.

So am I understanding it right Vnish.net is the real deal and Vnish-firmware.com is the knock off?
We put the Vnish-firmware on a dozen machines as a test and they are all on top of the leader board on my pool account.

But I might as well support the actual developer.   Well my wife is a Russian national so biased a bit I suppose.

If keeping hash boards in these things wasn’t enough I managed to brick a couple control boards!
I did a SD card flash and the lights went off and then to blinking like I’ve done many times before and then replugged it and now no IP and it won’t take a SD flash again.

Anyway to recover these?   They were working fine.   After doing 2 in a row I quit! 

First post here and just wanted to say what a wealth of information here!   I'm a large agricultural farmer in northern SK and have access to a large 3 phase supply at .06 and under from hydro electric and this seems like a good fit.  Up front very little experience when it comes to mining other than internet research.

Immersion makes sense on a couple fronts, we can use the free heat to heat large building's here during the winter months and  at some point is probably going to be ultimately necessary to stay on top of the hash rate race.  Winter heating alone would net 25-30k.  

\Flame suit on.\   So I've got a line on used S17's from China in 50 lots knowing full well that we'll be taking each one apart on arrival and going through each hash board.   A PITA but the cost point is so attractive compared to new gear right now and used gear for immersion would be coming apart and getting cleaned anyways. Got some used S19's on the way too but they're harder to come by.

We'll start filling the tubs with S19XP's when I can get my grubby hands on them but this will get us rolling now.

That said, if there was any machine that looks like immersion would keep it running its the S17's and just wondering if there's other folks on here running that model in immersion and if it's been stable knowing their issues.