Bitcoin Forum

Hello,

Like a lot of other users, I've spent most of my time on this forum as guest user, but decided to create a user today to be more active.

I've been mining since 2013, started with a couple GPU rigs, mined a few LTC and Mintcoin (did it go to the moon ? lol) back in those days and sold the rigs a few months later when BTC was trading for $700, I believe ?

Anyway, earlier this year I rejoined the game and purchased a couple of Avalon 741, then a couple more a month later ... and now I am glad I made that decision.

I have a few more Avalon units to be shipped in that December batch, and just recently purchased a few Whatsminer M3 units (March batch).

Follow some pictures of the setup I have going. The miners are blowing the heat inside the warehouse, which is around 15000sf, so the heat just dissipates. Even if it didnt, its winter now so it would work either way.

I am running the miners off 240V 30amp lines.

Some photos:

https://imgur.com/a/J93vz

Added a few more Avalon 741 units:

https://imgur.com/a/6d8rL

Added a few more units including 821, 741, Pango M3, L3+ and S9.

https://imgur.com/IjGxrvr

https://imgur.com/UJVOCXB

https://imgur.com/IR0KGFP

https://imgur.com/MDwWIgd

https://imgur.com/N40qEtc

Feels like its time to setup the whole room, because the door is full  ;D

As I read it, he is no longer is doing any GPU mining, and only using Avalon A7xx Bitcoin mining hardware.

I was, back in 2013 / 2014. Now I am only mining BTC at the moment.


Correct.

What site did you buy the 741's from?

Minerwarez: https://minerwarez.com/

You can also buy from these official distributors:
https://www.blokforge.com/
https://www.cryptouniverse.at/

More distributors can be found here:
https://canaan.io/official-distributors/

How much BTC have you mined since? Do you think that Avalon 741 is better than Antminer S9 regarding the price/quality ratio (or rather regarding price/efficiency ratio)?


Please keep us updated. There are very few posts in the Mining section recently although many people around the world are interested in this kind of information.


Nice photos. 500 views in 5 days without sharing to the imgur community means there is an interest.

Do you pay a lot for electricity with all those miners running?

0.46 btc since september, most of it already invested back in the venture with pre-orders (just ordered a couple more 741s from cryptouniverse december batch).

I never used the S9. But the decision to buy the Avalon 741 was based on the fact that it was easier to purchase, and all the reviews here said it was way more reliable than the s9 units.

Free electricity :)

Nice! It's always encouraging to see results from enthusiasts, rather than just the large corporate mining operations. Which pool are you on?


"Free" as in rent-subsidized, I assume?

Good luck.  It all starts here! 

I want to start out with 4 741's then progress from there. I missed the pre-order sale on cryptouniverse today but I live in the US so Blokforge should have the same pre-order sale soon. I have heard great things about the reliability of the Avalons. How has your experience been so far?

Good.
2 of the units have been running nonstop since september and 2 since november.
No a single issue so far.

I was under the impression that the 741's are no longer available to buy from distributors or canaan.

That's probably accurate. The new a761 and a8 series are supposed to be rolling out in 4-6 weeks (end of January they say, but they're always late).

They're a little underwhelming, honestly. Off the top of my head they're 9ish and 11t respectively.  The new units from Ebit look a lot more exciting. E9++ and E10. The first one is 10nm running at 18t and I dunno about the other one. They're already available for pre-order. I'm getting mine for 32000CNY each.

I've only run Canaan machines up until now, but I'm definitely ready to move up!

Just wondering why you never touched Bitmain's S9 Antminers when it is obviously more profitable (Bitmain's 13.5-14 TH at 1200watts vs Canaan's 7.3 TH at 110 watts)? Don't get me wrong i'm not telling you what to do or anything like that, i'm just curious about what you think.

Incredible setup.  Thank you for sharing your results with running those miners non-stop.

That's a great set up, with nice results so far, which mining pool do you mine with?

I missed the chance to buy them in november when I had the funds.


Same here.

Hey, sorry for the late reply. I picked the Canaan machines because of how much quieter they are than any other machine.  To begin with, I was running the miners in the spare room in my condo and I've got 2 small kids, so sound is a major concern.  Although I'm underwhelmed by their newest offerings, I'd still recommend Canaan products to anyone wanting to mine at home, strictly due to noise.

I like the cardboard doorway setup.   

I have wondered why the Avalon's don't come pre-packed with the controller but it has to be purchased separately. 

You are right about the noise, however our 6 year old son sleeps with a noisemaker.  I just turned that off and put the ant miner l3+ I have in his room.  closed the heating vent to his room and let that thing heat his room. 

We have an old house (1950's) and so not really insulated.  Our gas heater was running to keep the house at 72 and his room was the most comfortable in the house.  lol. 

I told my wife we should buy one for each room.....yeah.  she said no.

But back to the avalon controller,  have those worked well being separate?

It works great. Cardboard works great for insulation. And it has a really high burning point, so catching on fire because of the miner is not an issue.

Just added a few more units to the setup, first post updated with new photos.

I added 4 more units since my last post and got another one on the way. Will update once that one is installed.

The setup is definitely noisy, you can hear it across the warehouse (15000 sqf).

I had a bunch of those cardboard pieces sitting in storage, so that helped :)

You haven't found any dust issues with it sitting in a warehouse? Compared to a household?

Perhaps a good time to invest in some dust filtration blankets (which also acts as noise cancellation), to replace those cardboard boxes? I've seen some data centers in the past use some sort of material for this application. Not sure where to source it from.

The intake side of the miners is in our server room (AC cooled "clean" room). So no dust issues.

This cardboard thing is temporary. We will eventually build a box in the server room for the miners.

Please keep us posted on how long your free electricity remains free.  I suspect somebody is going to eventually notice the huge jump and initiate a conversation with you about it.

Added a few more units including 821, 741, Pango M3, L3+ and S9.

https://imgur.com/IjGxrvr

https://imgur.com/UJVOCXB

https://imgur.com/IR0KGFP

https://imgur.com/MDwWIgd

https://imgur.com/N40qEtc

Feels like its time to setup the whole room, because the door is full  ;D

@halminer,

To create a hot and a cold area is a really good idea. But I wont use cardboard. Just pure for the safety. It can get on fire really fast.
I also have a small and a big farm. @ the small farm location I use cast walls.
https://ibb.co/nLvePy
https://ibb.co/bsQePy

I am not sure how much heat the Avelon powersupply generate. I did not create a hole for the powersupply because, the bitmain powersupply does not generate a lot of heat.

Anyway good luck with futher improvements.

Now that's a hot basement!  ;D ;D

As good as the same setup i have. What cable size do you use for power? Do you meter it as well?

sheet rock is cheap use it instead.