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Author Topic: Avalon 8 official specs released  (Read 29681 times)
W15ER69
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December 30, 2018, 09:46:06 AM
 #401

How i can overclock 841? can i change freq or something else?
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HagssFIN
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January 19, 2019, 02:50:28 PM
Last edit: January 20, 2019, 10:21:42 AM by frodocooper
Merited by frodocooper (1)
 #402

^ You can change the settings by using the command line options. It is recommendable for advanced users only.



Btw,
Canaan has now released the technical specs for the mining heater A851H, and they say that it is for sale now. Smiley
Link: https://www.twitter.com/canaanio/status/1086171527601680384

Specs:


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January 19, 2019, 03:09:57 PM
Last edit: January 20, 2019, 10:22:41 AM by frodocooper
 #403

Btw,
Canaan has now released the technical specs for the mining heater A851H, and they say that it is for sale now...

If only it  was 80 watts a th not 95 to 120 watts a th Undecided

I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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January 19, 2019, 03:12:27 PM
 #404

Yeah it would be cool if the 'low power firmware' could also be implemented for the A851H.

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January 19, 2019, 04:05:41 PM
Merited by frodocooper (1)
 #405

Great concept, though I don't ever see products like this having efficiencies in a tolerance range for users here. I see this as a great way for average person to reduce the cost of residential power use. Also, the hash rate is higher than I was expecting, HF is probably on point with firmware to help in the future.

Might have to talk to some apartment managers/building developers about installing these. Portland is growing pretty fast. Wink

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January 19, 2019, 04:11:12 PM
Merited by minefarmbuy (1)
 #406

It's a perfect product for tech geeks who need to heat their apartment with electric heating!  Cheesy

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January 20, 2019, 03:35:39 AM
Last edit: January 20, 2019, 10:24:17 AM by frodocooper
 #407

^ You can change the settings by using the command line options. It is recommendable for advanced users only.

what command line options you mean?
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January 20, 2019, 03:46:29 AM
Last edit: February 26, 2019, 12:38:22 AM by frodocooper
Merited by frodocooper (1)
 #408

what command line options you mean?

If you do not know that answer you don't have full command of mining with the avalon 841

I have complete instructions.

give me 1 minute

this all is for just the A841

https://bitcointalk.org/index.php?topic=3375954.msg37014814#msg37014814

overclocking means loud hot running

underclocking means quiet cooler running.

overclocking  with current prices  means you lose more money  since the gear is not efficient.

under clocking with current prices means you lose less money since the gear is more efficient.

you need a powerful psu to over clock  say 2000 watts
you need  a cold room to over clock

you can have a weaker psu to under clock say 1200-1400 watts  

if your power is lower then 3 cents a kwatt
if your power psu is strong 2000 watts
if your room is cold
if you don't give a shit about noise

Over clock  the gear.

if your power cost is 3 to 7 cents  underclock

if you power cost is 8 cents or more this gear loses money right now.

I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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February 23, 2019, 09:16:46 PM
 #409

Looks like some pricing changes form canaan on the 851 and 911. Embarrassed to say I'm not sure how long they've been like this though I know our pricing had been based on the $200 promotion anyway.

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April 05, 2019, 01:26:41 AM
Merited by philipma1957 (2), Steamtyme (1), PassThePopcorn (1)
 #410

Canaan has published new OpenWrt and MM releases for the A821, A831, A841, and A851.

AvalonMiner
OpenWrt
MM
821
831
841
851

There are no published changelogs for each miner's 20190404 OpenWrt release at the time of writing.

The published changelogs for each miner's 2019-04-04 MM release are identical to each other. Here is the changelog for the A851's MM release:

Code:
Version 8511904-1ab9760

* Add support for HighPerformance/Balanced/Low power mode selection. Refer "Power Mode" item in luci "CGMiner Configuration" page.

The publication of these OpenWrt and MM releases correspond to Canaan's addition of new commits on April 4, 2019 to the avalon8 branch of their cgminer repository.

The most noteworthy of the new commits is commit b2356a1, which adds user-selectable power modes. The new modes are set by the --avalon8-power-mode command-line option, with values ranging from 0 to 5:

Code:
OPT_WITH_ARG("--avalon8-power-mode",
     set_int_0_to_5, opt_show_intval, &opt_avalon8_power_mode_sel,
     "Set Avalon8 power mode, range 0-5. 0: HighPerformance, 1: Balanced, 2: Low:."),

Values 3 to 5 appear to be unassigned as of this commit.

The high-performance mode appears to specify a target temperature of 87°C, a default voltage level of 10, and a maximum core clock of 875 MHz.

The balanced mode appears to specify a target temperature of 85°C, a default voltage level of 5, and a maximum core clock of 750 MHz.

The low-power mode appears to specify a target temperature of 65°C, a default voltage level of -5, and a maximum core clock of 537 MHz.

As stated in the new MM releases' changelogs, these modes appear in the OpenWrt GUI as a drop-down menu, with the high-performance mode being the default.
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April 05, 2019, 06:25:55 PM
Last edit: April 06, 2019, 12:44:02 AM by frodocooper
Merited by frodocooper (5)
 #411

This seems to be one of the better firmware releases recently. Only tested on 851's.

There only seems to be a few issues with this, the power consumption in the "higher" mode is on the verge of 1900watts @ 15th/s the June release was  more around 1700-1800w @ 15th/s.

Balanced seems to give around 13th @ 1400-1500w

Low power is around 9th @ 900w

Trying one of their advanced cgminer-api commands and using their cgminer-monitor bash script there is an issue with cgminer restarting over and over (this is only if you use an advanced command and is fine if you aren't using that specific command), I made a work around bash script that  fixed this and will send it to Avalon for them to clean it up as I macgyvered it to make it work as intended.

The api frequency adjustment works properly in this release as well, instead of using the more options on the configuration section.

Now using the June release you can get similar results for power consumption / efficiency by manually changing the frequency and voltages in the cgminer config, but for a novice that wanted to use the lower power mode or if you want any of their more advanced commands this release would be "better". If you were a novice and just were going to use this in normal operational / high efficiency I would just use the latest June release to have a lower power footprint.

Also gave you some merit as I wasn't aware of an April release, my previous tests were on March and February. This release also fixed two miners that the March release broke.
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April 25, 2019, 05:56:51 PM
 #412

Going to update my 821's at some point today. Best to update controller then units?

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April 25, 2019, 06:45:26 PM
 #413

@minefarmbuy
Yup, that's the way I do it.

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April 25, 2019, 07:25:43 PM
Merited by frodocooper (3)
 #414

This firmware is good if you want to be able to easily switch between regular and low power mode. I installed when it came out and will be shutting down all 8 series today and replacing with S17. With the original low power firmware I was able to have 821 and 841 units on the same controller. With this firmware, I had to put them on their own controllers as the 821 wouldn't show up on 841 controller. No I did not attempt to flash the MM firmware with them all daisy chained and upgraded them individually. There is a bigger hash rate drop on the 841 than the 821. Both will hash around 9 TH/s.
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April 26, 2019, 04:10:29 PM
Merited by frodocooper (3)
 #415

So far on LPM, -2 offset getting 17th/s at 1500w with two 821's fan pretty quiet under 35-50%.

HPM , +1 was hitting 23th/s but pushing 2700w, I didn't leave it there long before swapping to LPM.

Over night getting 17.2th/s from UI, and 16.8th/s pool side at about 1450w.

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April 26, 2019, 06:58:11 PM
Last edit: April 27, 2019, 12:27:20 AM by frodocooper
 #416

Over night getting 17.2th/s from UI, and 16.8th/s pool side at about 1450w.

Cool With good speeds and being fairly quiet looks like I may be able to replace the 2x throttled down 721's I have running in our inspection room with 2x LPM 821's and gain around 7THs at the same time Smiley

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April 26, 2019, 08:50:42 PM
 #417

Yea, really happy with the new fw. Been mining at a loss with my power rate and now that was cut in half. Let me know if you want to look at a live stream.

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May 16, 2019, 01:56:17 PM
Last edit: May 17, 2019, 01:22:15 AM by notabeliever
Merited by frodocooper (3)
 #418

Just updated one miner  with new MM firmware 2019-4-30. Working good for anyone wishing to update their miner. Left my RPI controller alone Avalon Firmware for avalon8 - 20181123.

Also working on 1200 w psu.

Code:
--avalon8-voltage-level 5  --suggest-diff 65532

EDIT.....nope went back to MM20181129.

Fine just second miner needed more power

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May 16, 2019, 02:22:24 PM
Last edit: May 17, 2019, 12:07:47 AM by frodocooper
 #419

As an FYI, unless you have a very specific reason for setting diff it is almost always best to let the pool decide what diff is used by your miner(s).

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May 16, 2019, 03:12:46 PM
Last edit: May 17, 2019, 12:08:36 AM by frodocooper
Merited by frodocooper (3)
 #420

As an FYI, unless you have a very specific reason for setting diff it is almost always best to let the pool decide what diff is used by your miner(s).

There is a reason, if you have a full rpi the pool will provide a difficulty based on the total hashrate being submitted by the pi. Each individual miner's optimal difficulty is much lower than that. While in the end the hashrate should equal out, you'll see some drastic spikes on the pool. Setting a manual difficulty that matches each miners hashrate has keep the pool graph as a nice straight line, it also helps when monitoring units as they don't have any huge jumps in either direction.
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