Topic: Avalon 851 on its way. (Read 1570 times)

I can not tell people to get this over the 841

I can get 97 watts a th on the 841

So far I can't top 120 watts a th on the 851

even though I can go to 14.9 th with this one  the 851  power 1750 watts

I can do 13.5 th on the 841  power about 1400 watts

Unless btc is to the moon   that extra hash  of around 1.4th  is simply not worth  about 350 watts of power.

.13 is horrible efficiency, why would anyone buy these?

The reliability doesnt make up for all that extra power being burnt versus the competition. I sure hope the 9 series lives up to its advertised specs, it would be nice to see Avalon not behind the pack on efficiency which has been the case the entire time I have been in this industry.

I am going to fill in this chart

0.0 tested
-0.9 tested >  8hours > 28072 gh  1710+ 1661= 3371 watts = .1200 watts a gh or 120 watts a th  at 88f
-1.0 tested
-1.1 tested > 36hours> 21933 gh  1410 + 1429 = 2839 WATTS = .1294 WATTS A GH OR 129.4 WATTS A th at 91f test ended at 10 pm the 15th of Aug
-1.3 tested
-1.4 tested > 7hours > 21900gh.   1417+1398=2815 watts = .1289 watts a gh or 1289 watts a th at 86f
-2.0 tested
-2.7 tested >14hours >19300gh    1332 + 1309 = 2641 watts = 0.1368 a gh or 136.8 watts a th at 85f
-3.0 tested
-4.0 tested
-5.0 testing> I will try a low watt low noise setting over night



235-240 volts
So two meters

this : https://www.amazon.com/gp/product/B07CKSTBX5/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

that :  https://www.amazon.co.uk/dp/B01DSQ30FO/ref=sxts_kp_bs_1?

2 avalon 851's

1 my rig psu

1 corsair psu  atx 1500

room has been 85f to 88f







-0.9   has the best efficiency  but runs hot at 43/92 and 39/88 with 100% fans.







I have some test limits  I do not want to go over 1800 watts   so 0.0  does that  I won't be testing that setting again

think  14.9 th and 1800-1825 watt in a warm room is close

yep   I just checked  this  morning.

and with the -1.4 setting I am at 2820 watts and  21900 or .1287  per gh  128.7 watts per th

now at stock or 0  I did push  14.9  and 14.7  which is 29.6   but that was with about 3700 watts  that comes out to  .125 per gh or 125 watts per th


The  psu  needs to beefy  to do 1800 watts I have a delta 2400 watt and a hp 2450 watt  that will do it.

the only  case it makes to burn power like that is if btc moons  to 12000 or more really fast

also the units ran hot at stock.

results over night:

https://i.imgur.com/GqMkJ2E.png
https://i.imgur.com/tojDIrI.png
http://solo.ckpool.org/users/1JdC6Xg3ajT3rge3FgPNSYYFpmf53Vbtje


So far I prefer the 841 over this 851

but it is nice to find that  numbers like -1.5 ,-1.4  do work to fine tune

I will setup -1.3  now and test for 12 hours.

Room is hot 90f  

-1.3  did boot I will get back with  numbers tonght

GAVE UP ON that setting it was about the same as -1.4

I am now on -0.9

and these are finally getting some where

http://solo.ckpool.org/users/1JdC6Xg3ajT3rge3FgPNSYYFpmf53Vbtje

about 27.1  th and around  3220 watts  in a 90f room

that is 0.1188 a gh or 118.8 a th

I taking these measurements to find a threshold

-1.3 or -1.4  do 21.5 to 21.9 at about 2825 watts  lets say .1289 per gh or 128.9 per th

I am looking to get  a steady 1500 watts at the meters or just under 3000 watts for 2 units

may be the -1 or -1.1 setting will work best.

based on my tests so far  power cranks up  but efficiency actually improved a tiny bit on this -0.9 setting.

I ran the -0.9   for about 8 hours  

topped out at 14th x 2 = 28th


https://i.imgur.com/rruEgwH.png
https://i.imgur.com/0RVYO2s.png
http://solo.ckpool.org/users/1JdC6Xg3ajT3rge3FgPNSYYFpmf53Vbtje

I know I can push just a bit more.

If I go to 0  my meters may burn  as they did over the weekend.

so

 0.0 tested
-0.9 tested >  8hours > 28072 gh  1710+ 1661= 3371 watts = .1200 watts a gh or 120 watts a th  at 88f
-1.0 tested
-1.1 testing
-1.3 tested
-1.4 tested > 7hours > 21900gh.   1417+1398=2815 watts = .1289 watts a gh or 1289 watts a th at 86f
-2.0 tested
-2.7 tested >14hours >19300gh    1332 + 1309 = 2641 watts = 0.1368 a gh or 136.8 watts a h at 85f
-3.0 tested
-4.0 tested



-0.9   has the best efficiency  but runs hot at 43/92 and 39/88 with 100% fans.

will drop to -2.7 now  which did boot.  going to do an 8 hour test  






I have some test limits  I do not want to go over 1800 watts   so 0.0  does that  I won't be testing that setting again

think  14.9 th and 1800-1825 watt in a warm room is close

Looks like 21.3 th/s last hour from my read. Two 851's you said?

@ yankees  it does   14.6 to 14.9  at 0 setting   but uses  at least 1600 watts in a cooler room say 77 f

in a hot room  92f

 it pulled over 1850 watts on the hp gold  1450 psu
it pull  1790  on a corsair  1500 titanium  I shut that done asap due to fear of killing the psu

I killed one kwatt meter as they like to do under  1800 watts on long tests.

I did discover the -1.5 setting   this has me under 1400 watts  say  1350 to 1375 watts  on each meter  and around 22th

\\
early tests show as of today

If you want an avalon  I would say buy the 841 ..

the 851  seems  to need more power  as much as 1850 watts at  stock in a warm room

I am going to point the two to solo.ckpool  and try -1.4 setting

it does boot and does hash  be back in 2 hours with a report.


here are the 2 miners.

I would hope for 22-23th  at  2800 watts  or better

http://solo.ckpool.org/users/1JdC6Xg3ajT3rge3FgPNSYYFpmf53Vbtje

So  the 851  does 14.5 to 14.9  th at 1750 to 1850 watts on stock setting?

new meter link from amazon

https://www.amazon.com/gp/product/B07CKSTBX5/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

Yes  I have been testing for about an hour.

I thought of trying a different approach to clocking the volts.

The new results are decent.  They also bring about a new idea others may want to try.

1) on the stock settings of 0           the 851  hashes as high as 14.9t but uses insane power  more then 1850 watts  which kills most of my meters

--avalon8-voltage-level -1
--avalon8-voltage-level -2
--avalon8-voltage-level -3
--avalon8-voltage-level -4

So I tried all of the above with the 841 and the 851

I like the results  on the 841  but the 851  hashes lower  and burns more power on those  underclock settings

So I started to think outside the box  and opened a whole new world  of clock settings

--avalon8-voltage-level -1.5       works   which means many others like that may work

my meters show 1350 + 1380 = 2730 watts  that ls .13  watts at the wall or 130 watts per th

at maybe 21000 gh which still sucks  but room is hot  90f

and it now opens  clocks like -1.1 , -1.2 ,-1.3, -1.4   to testing  many more for that matter.

+1 to -4   by tenths  is about 50  settings

Did the meters come today?

Okay I have this squared away for overnight test I am pointing two units to solo.ckpool

Using -2 offset.

Doing about 24 th and cant measure watts on both units until I get a new meter.

The 851 seems to be okay and a bit more power hungry on -2

I need new meters to be sure.

So I attached a second miner and did setting -3  and something is wrong.

Going to try -2 setting

edit:
the mm files were different one was older then the other they are now both the newest one



both mm files the same and we are working!

I deleted this info as it was based on the wrong idea about the 851

The Correct info is the 851 is a stand alone miner that needs your psu.

---

this was wrong it is just like the 841  and does not use a built in psu

---

this was wrong based on an error

---

this was also wrong

okay at -4

--avalon8-voltage-level -4

settled in at 1260 watts on the corsair 1500ax tit model

have to wait on hash rate to settle it is maybe 12202.40

and 1260/12202 is okay  right near 103 watts a th

that is  spec as this is supposed to be a bit more power hungry

I am going to add a second unit and see what happens.

with 2 of three meters burnt out  and 1 left I can only meter 1 unit not both

3 meters will show tomorrow I can post power use then.

Wow that's a significant drop in power consumption; almost 1/3. Hopefully the hash hasn't dropped off to much.

Did you get any results at -3?

And yay, it didn't fry another power meter.

Finally some down clock numbers that look okay

under more options this setting

--avalon8-voltage-level -4

is using only 1305 watts

this is 841 info  I am going to try these two settings for the 851

--avalon8-voltage-level -4
--avalon8-voltage-level -5   lowest numbers      8500 hash at 950 watts runs very cool

I have endless psu's  not that one but   the issue is watts and efficiency.

the gold hp does 2500 watts zero issues.
the plat delta I have does 2500 watts zero issues.

The 851 seems to spend way more power for an extra 1 to 1.5 th

the 841  sets lower  to 12.9 th and burns 1310 watts in a hot room when down clocked

this unit won't get under 1400 watts or even 1500 watts   and it gives me 14.2 to 14.9 th

I don't mind the higher hash rates I do mind the much higher power use-age

my meters tend to overheat and die at 1850 watts plus .

I will try with remaining meter to see what I do at stock setting.

Just grab the bitmain APW5+ off ebay for like $150-$175 they work great and are rated up to 2600w

okay so using this psu this morning I killed my power meter

https://www.ebay.com/itm/2450W-Power-Supply-Server-PSU-Plug-n-Play-Wiring-ASIC-GPU-Mining-Rig-10x-PCIe/332624669561?

and before the meter died it was showing 1850 watts for 14900

so far I can't get gear to down clock I get 14200 to 14900  and use 1500 to 1850 watts

I have a second meter will hook it up

But what I want to see is can i get this gear to run at 13500 and 1350 on some kind of a down clock

14.2 to 14.9 th is nice but  not at all the extra power use.

I also ordered a few more meters to test gear.

stock settings below

Tired tonight.   I have six or seven ways to try. I will do so on Sat