Avalon 851 is coming soon

DHL just updated me that my Avalon 851 will be here on Tuesday the 7th. I'll share my thoughts on it here and even put together a YouTube video.

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Can't wait!!

i hope canaan made something about the rising power consumption at growing ambient temp...

it is supposed to help this.  I have all the youtube videos and tests on the 841's  and under highest temps and settings it can be more then 100 extra watts as you go past 80f up to 97f 97f was max temp test I did. here are the 841 numbers https://bitcointalk.org/index.php?topic=3375954.0

That is not just a Canaan issue. The s9's also increase power consumption as temps rise. The Bitmain & Sorcerer PSU's and probably most others drop efficiency as well.

yes the apw3 + does not fare well past 85f But even corsair 1500 titanium atx has heat creep issues.  it did the best of the 6 psu's I tested. all psu's I used had heat creep they all want to be under 80f  and they all liked 65f or close to it best. One thing the 841's can run in a 97f room for days on end they did this during our heat wave. both the s9's and the T1's dropped boards not the 841's

100% truth! During these 100-112 days we had here in Texas my 2 S9s and 1 S9i used up to 4700 watts total when room temp was 108-109 F. Usage would drop down to around 43-4500 in the evenings as it cooled down. All 3 PSUs were APW3+++. Also meant to say my Whatsminer M3's would use up to 2400 watts each in high temps!

Is Avalon 851 the 7nm miner or a faster 841? I have not seen official announcements of the 851, and on twitter the 7nm miner leak was called Avalon A9. https://twitter.com/redtheminer/status/1024307705006022657

Within any Avalon family all use the same chip so the 851 has same 16nm chips as the 821/841's do.

What are the specs? I'll probably hold out for the 7nm unless the 851 is $1k or less. Seems like a repeat of 821 and first batch buyers will just get burned again when they release more efficient model shortly after that will probably be cheaper. 821 preorder was $2899 and shipped about 2 weeks before 841, which was $1999. I'd imagine not many other than first batch buyers bought the 821. They do have an opportunity to sell a lot of these if specs are equal or better than T2 Turbo and pricing is better than Inno; $1350 currently and shipping in 2 weeks.

Yep, waiting this time around.  Those 821's are good but not that good.   7nm needs to be priced right.

The 851 seems to be 14.5 th at 1350 watts.  edit more like 1550 watts All lower powered gear below It looks like innosilicon drops its gear first at 70-75 watts a th. In 2 weeks. Then pangolin whatsminer m10 due in sept does 65-70 watts a th. Then gmo at 82 watts in October -   This was a long preorder and buyers will hurt on this one. Then the a9 maybe nov.   Doing about 65 watts a th. One question where is the new bitmain?

Cool to hear these news, can't wait for you to receive it

IIRC  this one has  the psu built in  somewhat like the  Innosilcion  Edit not true.  it looks just like the 841 in every way but can go to about 14.8th using more power.

i know but avalons are veryyyyy sensitive. s9 not so hard. i made efficiency  tests with PSUS and rising ambient temp, PSU almost make no difference in efficiency.. canaan sorcerer psu and bitmains..not much difference bit apw3++ stops working at certain temperature. APW7 can withstand higher temperature --> efficiency with rising temp: its all about the miner

The apw5 is better and 2600w and the apw7 is pretty good with heat creep now too.

No  it is a combination  of multiple factors. psu miner load on psu  ie  1500 watts on a 1600 watt psu   is worse then  1500 watts on a 2400 psu. I also  set the psu's  I tested  next to an ac vent  so that the psu  was ac cooled  in every case with every miner efficiency was better. My tests with: s9 avalon 841 Halong T1 with 2400 watt delta    plat 2500 watt hp        Gld 1500 watt corsair  tit avalon scorcer bitmain apw3 + Halong dell plat all show ac cooling the psu make it more efficient all show heat make  the power draw higher. and the s9  is  less affected by heat as to power draw the halong T1 has  good selections  of speed to avoid power draw but that both of the above are more inclined  to drop boards when ambient air temps go over 95f the avalon 841's  never ever drop boards  even when NJ had a heat wave in early July  and the ambient air  was    June 27  73f >   >  June 28  88f >   >  June 29  90f >   >  June 30  95f >   >  July   1    97f >   >  July   2    95f >   >  July   3    90f >   >  July   4    86f >   >  July   5    88f >   >  July   6    82f Data above is from  https://www.timeanddate.com/weather/usa/freehold/historic?month=6&year=2018 Our setup is in this converted barn I developed a heat shielding method  and the two 1600cfm fans keep the air temps 3 or 4 f lower So that  loft space  was at 92  when it was 97  both the halongs and the s9's drop boards at those temps

So which of the three do you prefer?