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Author Topic: Quick Avalon A721 Review  (Read 3359 times)
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yxt
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November 17, 2016, 02:50:35 AM
 #1

Luckily I have been able to play with the new A721 for a few days.
I do not have much time right now. Therefore only a quick overview.
Let me know what you want to know.

It comes in a nice  card box.
unboxing video: https://youtu.be/aFzLT7yx1aM

Packing content:
- Thank you card / quick start guide
- Avalon 721
- USB Converter 3 (AUC3)
- AUC3 I2C 5PIN cable

first impressions:
- Very good build quality, as we are used from the A6.
- works stable with 6 Th/s
- same webinterface as the A6

I measured the power consumption with slightly <1000W.
But this will may change with the next/final firmware. They working hard on it Smiley
I have measured with an Enermax Platimax EPM1000EWT as PSU and an intermediate plug, not with a fluke.
So it is only a good approximation  ;-)


Yes, the efficiency is currently not as good as that of Bitmain.
But since the 16nm hardware lifetime will be longer, I rate the build quality and customer service as more important.
And hope for a firmware update.

2 A721 pointed at kano.is
https://kano.is/address.php?a=13EUsKGmdZNvo2zfeAasShgty8GB4hA23E


useful links:
https://github.com/Canaan-Creative/avalon7-docs/wiki
https://canaan.io/downloads/software/avalon7/

You will be able to buy them from within the EU soon.
check asicminer-shop.de for that... (down for maintance at the moment)


Anyone who gets an A7, I would suggest a change on the advanced web configuration page:
More Options: --avalon7-nonce-mask 26
It should speed up the hash rate ramp up.

some quick pictures:





















Disclaimer: This information is only my private opinion and does not constitute expert advice. No warranty is provided.
I have a business relation with canaan, but neither got the A7 or anything else for the review.





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November 17, 2016, 03:17:04 AM
 #2

Really nice! Wish they will accept bitcoin as a payment!  Wink

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November 17, 2016, 06:14:51 AM
 #3

Efficiency is about 50% higher compared to S9? Too bad
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November 17, 2016, 08:34:55 AM
 #4

Glad you got to play around with it.  How are the heat and noise levels?
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November 17, 2016, 03:41:58 PM
 #5

I assume thats 2 A7's in the cgminer webgui pic? Its showing 12TH/s avg...

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November 17, 2016, 08:58:57 PM
 #6

I assume thats 2 A7's in the cgminer webgui pic? Its showing 12TH/s avg...
Yes, it shows two devices A711-S-0-1 and A711-S-0-2.

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November 17, 2016, 11:29:31 PM
 #7

Uh oh...I dont see a section in the GUI for error codes anymore. Those were so helpful with the A6

Stop buying industrial miners, running them at home, and then complaining about the noise.
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November 18, 2016, 12:17:17 PM
 #8

Glad you got to play around with it.  How are the heat and noise levels?

As it is the same cooling solution is, more or less the same. Sch
Have the feeling that the fan is more constant. No up/down spinning, thereby it appears slightly quieter
But the ambient temperature is also quite low...



I assume thats 2 A7's in the cgminer webgui pic? Its showing 12TH/s avg...
Yes, it shows two devices A711-S-0-1 and A711-S-0-2.

right


Uh oh...I dont see a section in the GUI for error codes anymore. Those were so helpful with the A6

wow, I have not noticed that, thanks for the hint.
I will ask them to bring it back/for the reasons

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November 21, 2016, 10:25:41 AM
 #9

Hi mate,
when will your shop be up? And at what price will be the avalon (including VAT) ?

Also I didn't see any mention of noise output ?

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November 30, 2016, 12:47:04 PM
 #10

Hi mate,
when will your shop be up? And at what price will be the avalon (including VAT) ?

Also I didn't see any mention of noise output ?

shop is online again: http://asicminer-shop.de/Avalon-A721-6-TH-s

Noice is depending on the ambient temperature
Volume is very subjective. But I would say quieter than S7/9, the same as the A6

Can anyone with a unit comment on their noise level?
I would call these only moderately loud, whereas the S7 was extremely loud. Not quiet enough to have in your bedroom but okay in another part of your house. I've never had an S9 so cannot comment, but presumably the S9 is just as bad as the S7.



Anyone who gets an A7, I would suggest a change on the advanced web configuration page:
More Options: --avalon7-nonce-mask 26
It should speed up the hash rate ramp up.


I have deleted all posts in which was only speculated about the payment method and reasons. There is already a lot of it in the other topics.
Let us focus on the device.

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March 21, 2017, 04:45:56 AM
 #11

Its a good miner. But the company is the issue. One page says 3 month warranty. another page says 2 year warranty. i bought 2 avalont 721 and one went out after 2 months. i contacted them about the warrant 3/15/2017. they asked for more info and i got back to them the same day. its now 3/21/2017 and i emailed them 2 more times and then requested an RMA (per their site info) and i have not heard back from them. I dont think they honor  their warranty. stay away!!!
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March 21, 2017, 11:24:59 AM
 #12

pretty sure they will, please post your ticketID

and please provide a link to the page with the 2 years warranty, thx

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April 03, 2017, 07:37:25 AM
 #13

Efficiency is about 50% higher compared to S9? Too bad

I thought exactly the same, until I started to replace the thermal grease on Avalon6s of my fellow. The PCB is looking to be much more religiously designed than Bitmain's PCBs...

And then I found this: https://bitcointalk.org/index.php?topic=1836179.0

So If I will not be lucky enough to buy X6 upgrade kits from Hotmine.io, I'll buy an Avalon 741.

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April 03, 2017, 09:00:12 AM
 #14

I run one A721 down clocked to solo with, (set and forget lotto ticket)

 Voltage Offset: -2
 Minimum Fan%: 22
 More Options: --avalon7-smart-speed 0 --avalon7-freq 396

With those settings it's really quiet.

8  )

8 )
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