Topic: Avalon 6 Vs Antminer S7, which one you will choose? - page 12. (Read 38951 times)

One of the most interesting things is "Note: Minimum order quantity is currently 10.".  On E-Hash I do not remember 4.1's having a minimum quantity.   I liked not having a min quantity.   

I do think S7 lite if it comes out will go head to head with Avalon 6.  And eventually there should be a few more home miners.  But having more then one company selling gear honestly will help us home/hobby miners. 

In Mr.Lees thread I think he mentioned twords end of month being shipped on his 3PH he talked about... so we could see a big jump if to many sales like this with Avalon.

They say they are US seller. I really want Avalon (Canaan Creative) to verify before I would order there.     

I don't think holding off will be a problem at the moment I think they wanted purchase of 10 which means most likely a group buy.  Hopefully it's lowered from 10 once they carry stock.

Ouch.

 $1300 PLUS shipping.

 This thing is bloody near a non-starter, it's priced a bit WORSE than the S7 per TH for slightly lower efficiency, if that's going be Avalon's own price.
 Hopefully there's a good chunck of "dealer markup" in that price, it's totally "no chance of RoI" as is unless your electric is VERY cheap.

 (does quick visit to bitcoinwisdom, does standard RoI calculation)

 Yep, it MIGHT achieve RoI. Barely. At 3cents/KWH. NOT including power supply cost or shipping costs.


 So my answer to the original question remains "I won't chose either one as they're both too expensive".

 Hydrofluid has a tendancy in the long term to leak, and I suspect the lubricant most "fluid" fans use has issues at the RPM level with foaming and such.

 Ball bearing overall is much superior to any hydrofluid-type sleeve bearing design in fan usage if both are well done designs.


 Some miners have lasted longer than 2 years. Depends on your electric rate, there are places that the S3 is still profitable and might be some modded S1s out there churning away at a profit.



 All of the Bitmain miners I have or have seen pictures of use Delta fans, except the C1. That focused flow fin set is a patented design feature IIRC.

Maybe its not the correct thread but i read a lot about noise here.

Consider using acoustic panels for lowering the noise.

check auralex.com for solutions, there are also tons of others. Technically solutions should work any noise generating thing.

I have used their foam absorbing panels on the rack walls before, and they really do the job. Actually I never measured any levels,
but reading so much about noise problems makes me think of doing a bit of research and drop some specs and reached results here.

For the starting minimum i would suggest this:

1. Isolate the miner from the table or whatever surface with a piece of thick foam or something soft and porous. There may be some frequencies that will multiply.

2. Do not put any noise generating equipment in the corners of the room. If you have drywalls around, this rule doubles. Or in case you have no other way, put some carpets or sound absorbing panels or whatever soft and thick on these walls around your equipment. Sound reflections are quite loud, and there are lots of them.

3. Fan is usually not as noisy as the air flow itself, so consider making some kind of air duct made of foam, that needs lots of experimenting,
but can result in quite a drop of db's.

There are lots of other ways, I will do some research and tests and will see what happens in real life.

I run 4.1 avalons in isolated environment so it never was a problem.

I'm not sure either I had good luck with ehash. So if I could stick with them chances are I would.  I'm would really need a announcement to switch companies.

But it is looking like possibly a GB item.

They had posted they were working on making the pi 2 work as a controller in their must do on their wiki, I am sure it will be running by launch, I wonder if I can use the same controller for the 4.1 and the 6.

okay 1300  plus shipping?

why no ehash  I do not know block c.

Hmmmm, probably over 5BTC per after shipping and customs. Yeah i think i'll pass o.O...

I'm not sure whats the math here. Close to the S7 price, yet lower GHs by quite a bit and worse efficiency too?

Yes group buy! But, should probably wait for an official announcement from Avalon?

The only thing is the miner will have what a 2 year lifespan?  I'm guessing something like that.  Then it's at "free" or in a museum.

Deltas are loud and push a lot of air.  But a lot of bitmain gear is not to quiet either.  Home miners who want quiet are fighting a battle I do not envy as when making the gear very few look at noise anymore.

I use my mining area so I'm lucky.  Noise I could care less on I just want it to be a dependable fan with lots of CFM.  Mots deltas seem to do this.  I have had a LOT of delta fan's and only one die.  So overall I think pretty good quality.

And since its now official, here is my source.
http://www.blockc.co/products/avalon-6-3-65-th-s-bitcoin-mining-server

Blockc is the us partner of Avalon. We also now know the price.

Edit: MOQ 10. Lets start some Group Buy 

What i was wondering about is why there were no hydrofluid fan with high RPM. Its nice they can get 80 CFM with under 20dB, so i'm not sure why they could not design some with double the RPM (3k+). Not sure if its a design limit or what.

Exactly, fan modding is honestly a passion mixing that with under clocking I love (and need) to get all my miners quiet or my wife will kill me.

 Delta fans are noisy?

 Well, the high end ones certainly aren't quiet, though none of the 120mm models I've seen on miners can compare to the old 80mm 80CFM screamer - thank goodness!


 There are VERY few companies that make fans that can push anywhere near as much air as the higher-end Deltas though, and they ALL are comparable on noise level - like the YSTech that the SP20 used, it only seemed quieter due to a better mount and default lower % setting than the comparable Delta models.


 I used to prefer Rotron over Delta, but Rotron got cheap over the last 20 years - their metal-frame ball bearing fans were bloody near unbreakable, and I've still GOT some that are 20+ years old in working gear with 150k+ hours on some of them.

Personally with my mining area I don't care about quiet.  I just want a fan that pushes a lot of CFM's and keeps it quiet.  Deltas do this (some models more then others).   If you put it in a living area yes you need to get a different fan.

But overall I think deltas are pretty good.  It's just some people are not set up to have a miner that is loud.  But I don't predict any of the new miners coming out (whenever it is on the 2 or so were waiting on) to be quiet.

I'll take a delta over pretty much anything else on the market, 8 out of 7 days of the week. There aren't many others I would trust to keep a $2k investment from burning itself down.

I'm sure it's due to noise delta's are pretty great fan's as far as CFM's.   I did find I liked the sanyo better on testing with S4 on recommended fans.  It just had even more CFM's going through the machine.

Miners are really not that quiet anymore.    You either have to older older gear or mod new gear it seems.   I do expect power and cost to be bigger factors then sound as far as a business standpoint on most miners sold.

 Delta fans are crap?

 You have a very interesting definition of "crap".

Yes agreed, although I had the advantage of starting from scratch with no prior investment in Miners or PSU's and knowing that I was going to need to undervolt.

So I picked up 4 x 5V 150W PSU's on ebay for $45 delivered. So putting them in pairs gave me adjustment from 9V to 12V. The better solution was the Buck Converters 20 Amp ones, 2 needed / S5, are $15 a pair, 500W 40 Amp ones are $30 so works out the same. I prefer the 20A ones as you can adjust each board separately for best efficiency. They are all very efficient and I have measure as good as 98%.

But agreed this is not for most people & it's expensive compared to a pencil. But it is adjustable and I think that is essential with difficulty going up and BTC price all over the place.

If I was to choose what to have in all honesty I hate the string design with it's one down all down style, and would prefer a digital VRM controlled by software.  But you have to make the best of what is available and you can afford. For me Today that is an undervolted S5.

Rich