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Author Topic: Avalon A7 announced  (Read 145345 times)
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Vad-Z
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December 20, 2017, 07:35:46 AM
 #2041

Canaan just increased prices on their webpage - 741 is up from 1050,- USD to 1450,- and the 761 up from 1400,- USD to 1860,-  (!)

I wonder if this will affect us who already have pre-ordered??  Shocked
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GuardiollaJosep1259
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December 20, 2017, 08:30:52 AM
 #2042

Does anyone know where you can find replacement  AUC3 I2C 5PIN Cable for the 741.
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December 20, 2017, 11:35:44 AM
 #2043

No idea why you hating Bitmain and their product S9. I have received my first S9 and it is more silent, cooler and hashing slightly over nominal hashrate opposite 741 which hashing below nominal hashrate. And also if I consider price and power efficency it beats Avalon.
So far the only advantage of Avalon seems to be resistance to dusty environment.
Didley1JT
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December 21, 2017, 08:06:45 PM
 #2044

No idea why you hating Bitmain and their product S9. I have received my first S9 and it is more silent, cooler and hashing slightly over nominal hashrate opposite 741 which hashing below nominal hashrate. And also if I consider price and power efficency it beats Avalon.
So far the only advantage of Avalon seems to be resistance to dusty environment.

Benefits of Avalon are:

  • Distributors
  • Reliability
  • Seriously... working through Distributors

The S9 is superior to the 741 in terms of hash rate per watt. But they're known to burn out or arrive with dead boards.

There's no way the S9 is quieter than the 741. And both my 741s hashed above 7.8TH/s when set to normal voltage and mining in a garage with no mechanical ventilation (just open windows).

The 821 is coming out and is far closer to competing with the S9.

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madcow1713
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December 22, 2017, 02:21:12 AM
 #2045

OK trying to set up my first set of 741s (have experience with s9 and e9 miners) and I'm having issues having the controller recognize any modules. I am down to troubleshooting one module with the controller to see what I can do.

Using a 2A usb plug for the controller.
Firmware 20170603
1200W HP server PSU @ 240V

AUC3 converter is blue with green light....
I've tried a couple different converters, cables and usb cables to no avail.... any help would be appreciated.



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December 22, 2017, 02:57:05 AM
 #2046

Problem solved. I had changed the pool info and it was not happy with my settings. A password for whatever pool you are using is necessary or it will not connect. Disregard my issue.
Fantom2k83
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December 22, 2017, 04:17:27 PM
 #2047

anybody get faulty Avalon 741 from last batch? or only me lucky?)
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December 22, 2017, 09:21:28 PM
 #2048

I got a dead fan, two weeks with no operation, Canaan did state yesterday they are sending a new one.

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December 23, 2017, 11:43:35 PM
 #2049

anyone know where the 4-pin cable connecting miner to auc converter can be found. I'm sure if I had the right name for it I can find it at a cable store?
Looks like a 4pin audio cable to a 5-1/2 cdrom.

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December 24, 2017, 12:00:57 AM
 #2050

anyone know where the 4-pin cable connecting miner to auc converter can be found. I'm sure if I had the right name for it I can find it at a cable store?
Looks like a 4pin audio cable to a 5-1/2 cdrom.

It's a five pin cable between the AUC (AvalonMiner USB Converter) and the miner..

Here is a good advice from Phil for a replacement cable.
Does anyone know where you can find replacement  AUC3 I2C 5PIN Cable for the 741. Or even an option that would be a little longer?

https://www.amazon.com/gp/product/B013SY7P2U/ref=oh_aui_detailpage_o02_s00?

https://www.amazon.com/gp/product/B00O9Y80AK/ref=oh_aui_detailpage_o05_s00?


https://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Delectronics&field-keywords=2.54mm+5+Pin+Female+to+Female+F%2FF+Jumper+Cable+Connector+


I have the top two they work.

use the colored ones

make sure the same  color is on the left  on both units



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December 24, 2017, 01:36:35 AM
 #2051

sorry was going to edit it as it was for a Avalon 6 however I found they sell a 4-pin so thank you

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December 27, 2017, 01:07:00 AM
 #2052

Just received a shipment from avalon, it was supposed to contain a new fan.

Instead the package has a fan shroud!

2.5 weeks down on a brand new miner.

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December 27, 2017, 01:13:39 AM
 #2053

Just received a shipment from avalon, it was supposed to contain a new fan.

Instead the package has a fan shroud!

2.5 weeks down on a brand new miner.

Just buy a replacement with fast delivery from Amazon, Newegg, etc. whatever shop that is able to ship in your country fast.

It is way more cheaper solution than losing hashing time.

Here is a good replacement fan Delta QFR1212GHE DC12V 2.70A 6000rpm @Newegg.com
Newegg.com: https://www.newegg.com/Product/Product.aspx?Item=9SIAAES6BM1261&cm_re=delta_pwm_fan-_-9SIAAES6BM1261-_-Product

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December 27, 2017, 01:32:16 AM
 #2054

Just received a shipment from avalon, it was supposed to contain a new fan.

Instead the package has a fan shroud!

2.5 weeks down on a brand new miner.

Just buy a replacement with fast delivery from Amazon, Newegg, etc. whatever shop that is able to ship in your country fast.

It is way more cheaper solution than losing hashing time.

Here is a good replacement fan Delta QFR1212GHE DC12V 2.70A 6000rpm @Newegg.com
Newegg.com: https://www.newegg.com/Product/Product.aspx?Item=9SIAAES6BM1261&cm_re=delta_pwm_fan-_-9SIAAES6BM1261-_-Product


Or this:
Sanyo Denki San Ace 120 9GV1212P1J01
3.0 Amp 12 Volt 120mm PWM Fan 224 CFM

https://www.amazon.com/Sanyo-Denki-SAN-Ace-120mm/dp/B00QWB1X3O/ref=sr_1_1?s=electronics&ie=UTF8&qid=1514338179&sr=1-1&keywords=sanyo+pwm+fan

I used to have one with Avalon6 and it was a great quality fan.

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December 27, 2017, 07:26:00 AM
 #2055

Hey by the way, this is the first time I notice that Canaan now has a two-year warranty for the mining hardware.

https://canaan.io/warranty/

Nice.

Not true, 90 days is all they give you on the miners.

90 days  free of charge.  After that you'll get spare parts for a charge

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December 27, 2017, 07:34:02 AM
 #2056

Personally, I am not a fan of the integrated PSU.  PSUs go bad- that is the nature of the beast.  Now when one craps out- the whole unit is dead vs being able to swap it out in 30 seconds. 

    The front of the unit comes off and there are two terminals  to wire a PSU  into the device  in case the  internal PSU  craps
    out.

    This was my biggest concern. PSUs  tend to be less reliable than the miners, so it was imperative that if the Integrated PSU craps out that we be able to quickly supply power from an external one.  Basically 2 screws and your there.

   After a few months in the field  I'll have revised in field failure rates of the integrated PSU.

   For now I'm restricting sales of the 761 ( it sold out ) so I can monitor closely..  Later in 2018  there will be an 861

   

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December 27, 2017, 07:38:17 AM
 #2057

Personally, I am not a fan of the integrated PSU.  PSUs go bad- that is the nature of the beast.  Now when one craps out- the whole unit is dead vs being able to swap it out in 30 seconds. 

Agreed.

Integrating the PS should reduce the cost, but not sure they'll be passing that onto us.

Cost was a wash... added more chips, added more components for PSU, meh

The biggest driver of Price is the Restricted supply and I model the break even time so that it stays in a range
BTC goes up, price goes up  but I try to keep the break even time  within a reasonable zone
Assuming a constant BTC price and 3-5%  compounding difficulty increase every two weeks

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December 27, 2017, 07:43:58 AM
 #2058

I guess after testing A8 they will be splitted in slow 761 for China and fast A8 for rest of the world.

No, if you look at the specs for both machines the A8 is using different chips.

Correct.  Steve has said that they have sold different models to Asia in the past.  I believe the 761 falls into that category.

 ya,  inside china there was a 720, 740...
  761 was suppose to be all my baby,  but... I only got a small portion to sell.
  Since its a new design ( integrated PSU)  and I'm super conservative I didnt want it shipping to 15 different countries
   in small quantities..

   861 will go world wide

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December 27, 2017, 07:45:13 AM
 #2059

Too bad no picture of the miner yet...

same design  only 5cm  longer
same controller
same PSU... although I do have a more powerful PSU  coming...


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StevenMosher
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December 27, 2017, 07:47:09 AM
 #2060

I'm guessing the 761 is just for them to use up their inventory of the old chips.


   nope.  761 has been on the roadmap  through all of 2017.
 
   

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