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1  Alternate cryptocurrencies / Mining (Altcoins) / Re: Bitmain launches the Z9 Equihash miner on: May 03, 2018, 03:05:15 PM
regardless, all antminers purchased can be resold on like ebay and such for higher than you paid if you buy batch 1

its almost no risk, if when received the profit has dropped off -> dump the miner to some idiot on ebay for more than you paid

Hi all

Well, I cannot agree with you on that, too much risks with Bitmain nowadays as they price per value and not cost..
The X11 Batch 1 was at 11K USD and now they sell at 1500 and no one would buy afaik.. while the E3 were the most profitable, Batch 1 at 800$ now >2100usd
Same for A3, difficulty skyrocketed there and miners went from 2300$ to <1K$

Mike


all A3 batches have been massive profitable to mine with. X11 would have been massively profitable is CN did not hard fork. Top equihash coins have already stated they won't be doing a hard fork for ASIC's.

Even when these all hit the networks, should still result under 100 day ROI

Well, the A3s unless you got them on day 1 out of all customers you wouldn't have got your ROI yet, their price was 2300$, difficulty went up from ~0.5M TH afaik to 11M TH in 1 week, at 40$ per 1K sia that would still have made 1K usd, but prices of sia went down afterwards to 20$ then 9$.. you had to mine 120K coins at 40$ to return your 2300$ which till now none of Batch 1 miners did, afaik most should be around 100K coins

I have batch 1 A3's running right now in my farm.. paid themselves off in about 2.5months and have been making 8-10$ of profit daily since. A better ROI than GPU's have been recently.

Yup, mined about 125k SC since receiving it 97 days ago.
Cost per A3+PSU =~ 1.45BCH at purchase time
1.45BCH =~ 80k SC at todays price for both BCH and SC

Do you factor shipping and duties in your A3 costs? I'm closer to $2800 if you count everything.
2  Alternate cryptocurrencies / Mining (Altcoins) / Re: 30kW mining farm - need ventilation advice [Reward] on: February 02, 2018, 07:28:25 PM


10k CFM seems pretty overkill to me. Im running a single exhaust fan: https://www.amazon.com/gp/product/B002TXL5P0/ref=oh_aui_detailpage_o04_s01?ie=UTF8&psc=1

1.6k CFM for ~ 15kw worth of miners. Temps are about 10 degrees above outside.
[/quote]

Agreed. I'm running roughly the same but using a single exhaust fan with a max of 3560 CFM. http://www.airkinglimited.com/page/window-fan.html

It's doing a great job so far. Will prob have to add a second soon as I add more miners.
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