Avalon 8 official specs released

[W15ER69]

You'll have to flash the relevant OpenWrt image to your Controller's SD card. These instructions should help get you going. (Etcher is a good alternative to Win32 Disk Imager if you're not using Windows.)

Thank you, i thought there was a way, to upgrade the working system. I don't want to re flash sd card.

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[studio_mining]

Canaan has released new OpenWrt and MM firmware for the A821, A841, and A851. They claim in an email (the same email that announced their flash sale) that the new firmware improves efficiency to up to 85 W per TH/s.

OpenWrt firmware

AvalonMiner 821: https://canaan.io/downloads/software/avalon821/openwrt/20181128/
AvalonMiner 841: https://canaan.io/downloads/software/avalon841/openwrt/20181128/
AvalonMiner 851: https://canaan.io/downloads/software/avalon851/openwrt/20181126/

MM firmware

AvalonMiner 821: https://canaan.io/downloads/software/avalon821/mm/2018-11-26/
AvalonMiner 841: https://canaan.io/downloads/software/avalon841/mm/2018-11-26/
AvalonMiner 851: https://canaan.io/downloads/software/avalon851/mm/2018-11-26/

There is no changelog for the OpenWrt firmware at the time of writing.

The changelog for the MM firmware simply states "support for low power."

Anyone report any changes to hashrate w/ the new firmware?  Despite Bitmain using "Low Power Mode" as code for ASICBoost, Canaan's latest firmware is just voltage optimizations, correct?

[mgoz]

My 841 units dropped from 13.7 TH/s to 9.2 TH/s and my 821 units from 11.6 TH/s to 9 TH/s. These are all on the same controller and haven't tried running them on their own. I upgraded MM firmware separately. Voltage level offset set to 0. Claimed .085 J/GH. I don't have meter but that should put them around 750-800 watts. I swapped out some larger PSUs for 1200w HP. Two 841 on this firmware seems like it would be similar to a single 921.

[frodocooper]

Each of my A841s are running — with a voltage level offset setting of -2 — at around 8.8 TH/s after the firmware updates, while drawing approximately 732.5 W. This translates to roughly 82.9 W per TH/s.

[Steamtyme]

I like those numbers especially considering this isn't gear I'd have to order.

Did you happen to run any of them without the offset just to see what they draw for a baseline after upgrading?

[frodocooper]

I like those numbers especially considering this isn't gear I'd have to order.

Did you happen to run any of them without the offset just to see what they draw for a baseline after upgrading?

No. All of them are at a colocation datacenter, and I instructed my service provider to run them with the offset from the get-go. I don't have remote access to the miners.

[gvb]

I see above that the speed drops about 20-25% with the new firmware and the same voltage setting.

Can we really call this efficiency improvement?

I would expect less Watt while keeping the same speed.
It makes sense that less speed would mean less Watt.

It seems more like they used the voltage values of -3 or -4 for -2 now.

Thank you, i thought there was a way, to upgrade the working system. I don't want to re flash sd card.

you can do an inplace upgrade of the controller.

System > Backup/Flash > Flash new firmware > [ x ] keep settings

[minefarmbuy]

Welp, upgrading my 821 finally.

Edit for update.

Well so far no real noticeable change, hash is the same as it was at -2 but temps are lower and fan speed is reduced obviously.

[gvb]

I did the upgrade on 1 machine.

with the -2 setting it dropped from a constant 13.xxTH to 8.3TH. (running for 30 minutes now)

in/out temps are the same as usual but the fan is at 20% instead of 90+%.

I don't know if it is adding 0.1TH every minute now instead of full speed from the start.
I'll keep an eye on it and update this post if it changes a lot.

Edit(s):

0 : 9TH 20% fan (--avalon8-voltage-level-offset 0 --avalon8-temp 75) weird one here... started at 13.5TH for half a minute then dropping to 9TH and stuck there.
-1 : 8.8TH 20% fan (--avalon8-voltage-level-offset -1 --avalon8-temp 75)
-2 : 8.3TH 20% fan (--avalon8-voltage-level-offset -2 --avalon8-temp 75) was 13TH before the update

Oh boy... I just spotted the firmware post on Canaan's site...

We have just released High-Efficiency Firmware for AvalonMiner 8 series. The High-Efficiency firmware can reduce 20% – 30% of power consumption, but it will also reduce about 30% of Hashrate.

no wonder it barely goes above 9TH.

[minefarmbuy]

I wonder if I have the right firmware then. I up clocked to "0" before calling it day about 9 hours ago and they're hashing about 10th/s each on the 821's I have. 

openwrt-brcm2708-bcm2710-rpi-3-ext4-sdcard

and

MM821.mcs

is what I flashed last night.

[gvb]

I did a roll back to 20180306 & 20180305 and I'm back at 13TH.

I tried rolling back...

only the MM
only the controller firmware
keep the latest controller with previous MM

but none of the above worked to get it faster again.

both need to be put back to the previous version.

I tested on a 841 maybe they messed up something altho I doubt it because 13*0.7=9 and that's the max I got beside a burst of 12.5TH once at the start.

[minefarmbuy]

I imagine I did the incorrect firmware?

FC's hashes are consistent with what you were receiving.

I speculate I'm using less power with a hash rate decrease but its just not as substantial. I updated the mm then flashed the controller.

[W15ER69]

System > Backup/Flash > Flash new firmware > [ x ] keep settings

What file i must to flash?

[gvb]

the openwrt-brcm2708-bcm2710-rpi-3-ext4-sdcard  one is the controller/OS.

make sure you have the current and previous one handy as the new speed might not be what you want.

[frodocooper]

I imagine I did the incorrect firmware?

FC's hashes are consistent with what you were receiving.

I speculate I'm using less power with a hash rate decrease but its just not as substantial. I updated the mm then flashed the controller.

Make sure you downloaded from the 20181128 (OpenWrt) and 2018-11-26 (MM) directories. The directories labeled latest have not been updated and therefore still contain OpenWrt and MM firmware from March 2018.

[notabeliever]

Same here the update reduce miners from 13.6 down to 10-11TB

[minefarmbuy]

Make sure you downloaded from the 20181128 (OpenWrt) and 2018-11-26 (MM) directories. The directories labeled latest have not been updated and therefore still contain OpenWrt and MM firmware from March 2018.

I followed the links you gave earlier in the thread. I'm not sure with the performance I'm getting if I'll change anything yet before I get a read on the draw. On another pool I get small drop in hash average about 19th/s and on ck's 21 th/s, at "0".

[W15ER69]

the openwrt-brcm2708-bcm2710-rpi-3-ext4-sdcard  one is the controller/OS.

make sure you have the current and previous one handy as the new speed might not be what you want.

openwrt-brcm2708-bcm2710-rpi-3-ext4-sdcard this is sd card image, i want to upgrade working system without flash image to sd card.

[gvb]

I told you before how to upgrade a working system.

just point to the sd card image from in the controller web interface and it will update the system and keep the current settings if you leave that checkbox ticked.

you don't need to flash it with you pc.

[minefarmbuy]

I wonder if their still in the "vanity" UI? Click "advanced version" to access more controls. 

settings> system > backup/flash firmware.