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581  Bitcoin / Hardware / Re: [Review] Whatsminer M20S 65 TH on: July 19, 2019, 09:32:11 AM
I don't think that MicroBT is interested in the niche home mining market.
582  Bitcoin / Mining support / Re: Bitmain APW7 PSU fan is spinning normally but has no 12 V output on: July 17, 2019, 05:23:14 PM
Don't fix if you are not a prosessional.

There are deadly electric charges in the capacitors!
583  Bitcoin / Mining speculation / Re: Ebang 11++ // Any user experience needed on: July 16, 2019, 06:58:18 PM
Yep, two words.
Avoid Ebang.
584  Bitcoin / Mining support / Re: S15 - lost IP adress fault/firmware rewrite ? on: July 15, 2019, 09:57:43 PM
@BitMaxz
The third reset method (IP Report button) does not apply with the S15.
585  Economy / Computer hardware / Re: Antminer S9 Pro 56TH/s Available for sale on: July 15, 2019, 09:15:20 AM
Seems fishy to me,
if he can't even spell right what he is selling.
586  Economy / Scam Accusations / Re: MicroBT Scam? on: July 15, 2019, 06:25:19 AM
That's a scam website.

Why did you buy there?

The only official website for MicroBT is www.microbt.com

Their resellera can be found at www.pangolinminer.com and www.whatsminer.net
587  Bitcoin / Hardware / (Review/Guide) AvalonMiner 1041 31.0 Th/s, 1736 W Bitcoin (SHA-256) ASIC miner on: July 11, 2019, 10:43:46 PM
(Review/Guide) AvalonMiner 1041 31.0 Th/s, 1736 W Bitcoin (SHA-256) ASIC miner


Click for a higher resolution image. AvalonMiner 1041.

1) General information, other items needed
2) Unpacking
3) Overview
4) Installation
5) Configuration
6) Testing
7) Power consumption measurement
8] Conclusion
9) How to order
10) Management software


Last updated in: September 29, 2019.

PDF Document: https://mega.nz/#!I5sljCaS!OAk5tEV2RV0DnRiBquMl6mHuh0AxlGQGexVUORBd0h4

1) General information, other items needed
(top)
AvalonMiner 1041 is a Bitcoin (SHA-256) ASIC miner using 16nm ASIC chip technology.
It is manufactured by Canaan Creative (headquarters in Beijing, China).
This miner is a 10th generation AvalonMiner model for the manufacturer Canaan Creative,
and it uses a 3rd gen. 16nm Bitcoin ASIC chip called A3205.

The chip performance and power efficiency has improved a lot compared with the previous Avalon generation.

This is a standalone miner with a built-in controller board and a built-in power supply unit.
It is a big change from setup where you had a separate psu and a Raspberry Pi as a controller unit.
When it comes to network setup, the good news is that the daisy chain is still possible,
this time by daisy chaining the miners with each other using the ethernet port.

The advertised nominal hashrate for this model is 31.0 Th/s with a nominal power consumption of 1736 Watts.
There is also a high performance mode available: 36.9 Th/s with a nominal power consumption of 2361 Watts.

It weights 7.9 kg and the outer dimensions are 190 mm (L) x 190 mm (W) x 292mm (H).

This is a review and also a setup instructions guide for the AvalonMiner 1041.

Canaan Creative
: https://www.canaan.io

Technical specifications:
Code:
AvalonMiner 1041

Hash rate: 31 Th/s, -5% ~ +5%
Power consumption: 1736 W, -5% ~ +15%, 20°C, 220V AC, Wall-Plug
Power efficiency: 0.056 J / Gh/s Wall-Plug
ASIC chip type: A3205 (third gen. 16nm SHA-256 ASIC chip)
ASIC chip quantity per miner: 240 chips
Number of hash boards per miner: 2 hash boards
Controller: Canaan Kendryte K210 Artificial Intelligence SOC
Connection: RJ-45, up to 254 Miners (in theory) Daisy-Chain Connection (IPv4)
Cooling: 2 pc. 120mm x 38mm 12VDC 2.7A fan; manufacturer & model: Cooler Master A12038-60BB-4RP-F1 (mounted in front for a push configuration).
Operating temperature: -5 to 30 degrees Celsius
Noise: 70 dB
Weight: 7.9 kg
Dimensions: 190mm  x 190mm x 292mm

Other items needed:
  • A good quality, preferably with 3x1,5mm2 (~ AWG 15) wires  C13 power cord for the PSU.
  • Ethernet cable to go from the miner controller board to your router/switch device.
  • Computer to set initial pool and other configuration settings.

2) Unpacking
(top)
This Avalon 1041 is an sample unit provided by the manufacturer Canaan Creative.
DHL was the courier used in this delivery. Once again, no issues with the DHL delivery.

The packaging was nice and tight.
The first cardboard box included the miner,
which was packed with two custom shaped foam pieces.

The power supply unit for this delivery was a little different
than I originally expected. It was packed in the second cardboard box with all the supplies needed.
The psu is definitely a custom made one, so we are quite right to call it a built-in psu.
No C13 power cord was included with the psu.



Unpacking. Click for a high resolution image. Pictures taken by HagssFIN.

Here is the list of products included in the delivery:
Code:
AvalonMiner 1041

- 1 pc. AvalonMiner 1041
- 1 pc. Custom power supply unit
- 1 pc. Power supply accessories
AvalonMiner 1041 product list.

3) Overview (top)
As usual, a good look for the overview is given with a set of images showing the AvalonMiner 1041 and the custom power supply unit (Gospower G1196).

Click to show a high resolution image. Pictures taken by HagssFIN.







I had a good chance to do a thorough visual inspection for the miner, because I wanted to disassemble it a bit for this overview chapter.
The visual inspection did not raise any alarms, the build quality was good.
It was only after this inspection that I started up the miner for the first time.

4) Installation (top)
The installation with the A1041 is a very quick process, if you have the side mounted built-in power supply unit.
If you have the separate Gospower psu, it takes a little effort before you are ready for the start up.

Here are the steps to install the Gospower psu:
1. Connect all the low DC-voltage cables by following the setup in these images.




2. Connect the high AC voltage power cord.


You need a good quality C13 power cord which fits into your electrical power socket.
Please make sure that it has at least 3x1,5mm2 (~ AWG 15) wiring.

For the network communication you need to connect an Ethernet cable to your miner
and the other end of the cable will go to your network router or switch.

The miner network settings are set to the DHCP mode as a default option.
This means that it will be able to acquire an IP address automatically from the router's DHCP IP address pool.
You can find out the IP address fairly easy e.g. by accessing your router web configuration page.

When the initial setup is ready, power on the miner and start by finding out what is the miner IP address.
After the miner IP address is known, it is possible to move forward to the Configuration.

5) Configuration (top)
First you need open a web browser and enter the miner IP address in the address field.

The miner will then ask you for the user credentials.
Username: root
Password (default): root


Login screen. Click to show a high resolution image.

To access the pool configure setup, click 'Pool' in the navigation bar.
In this web GUI version it is possible to have only one pool in the configuration.
There is also two performance modes available at this page, 'Normal Mode' and 'High Performance'.


Pool configure. Click to show a high resolution image.

You can setup any pool address of your own choice,
as long as it is a SHA-256d algorithm based cryptocurrency mining pool.

Pool: stratum+tcp://pool_address:port
Worker: username.workername
Password: password

Miner hash board frequency, cooling fan level, etc. value are set automatically. There is no possibility to insert values manually.

When your pool setup is done, click 'Save'. The miner will then ask to do a manual reboot.
You can do this by accessing System -> Reboot. Click 'Ok' to reboot.


Reboot screen. Click to show a high resolution image.

After the startup process, the miner will start mining.
You should soon be able to see the miner hash at about 31 Th/s hash rate (in normal mode).


Overview page and Log page. Click to show a high resolution image.

The miner web configuration page is a lot more simple than it was with the 8 and 9 series.
The simplicity has some perks, but I kind of miss the good old OpenWrt web configuration page.
It offered more flexibility in the miner configuration.

6) Testing (top)
After the miner settings were done, it was time to start up the miner and see how it starts running.

Just like every other current gen. miner, the A1041 has hash board frequency settings, voltage etc. set automatically during the startup process.
I believe that at least with the side-mounted built-in psu model, the psu is able to adjust the dc output voltage fed to the hash boards.
The goal with this kind of setup is of course to get the best performance with a good power efficiency.

After the miner was ready with the startup process, the hash rate rose to about an average of 31.4 Th/s area in the normal mode.


Miner status page. Normal mode. Click for a high res. image.

In the high performance mode, the number for the hash rate was in the 37.8 Th/s area.


Miner status page. High performance mode. Click for a high res. image.

7) Power consumption measurement (top)
The power load measurement was done with a Perel E305EM6-G energy meter.
Technical specs data sheet (.pdf document): https://mega.nz/#!Np0RTaTB!QS53Vov3tOXcxmg_f2-24YzcYmMyRymHu6MGnE8jXLg


Perel E305EM6-G. Click for a high res. image. Picture taken by HagssFIN.

First, here is the result in the 'Normal mode'.

Power measurement. Normal mode. Click to show a high resolution image. Picture taken by HagssFIN.

Stable result for the power consumption (at wall) in the normal mode was 2118 W,
when the hash rate was averaging in the 31.4 Th/s area.

This gives us a following power efficiency (at wall) for the A1041 + Gospower setup:
2118 / 31400 = 0.06745 J per Gh/s.

After this, a second test was made. This time in the 'High performance mode'.

Power measurement. High performance mode. Click to show a high resolution image. Picture taken by HagssFIN.

Stable result for the power consumption (at wall) in the high performance mode was 2775 W,
when the hash rate was averaging in the 37.8 Th/s area.

This gives us a following power efficiency (at wall) for the A1041 + Gospower setup:
2775 / 37800 = 0.07341 J per Gh/s.

Update August 7, 2019:
Because the power consumption number was quite different than originally expected,
I tried another power meter just to be sure that it is not because of my metering equipment.

The power meter model I used this time was LVM 210, manufactured by Waldsee Electronic
(this model is also known as CLM 200 after the acquisation was made by Christ-Elektronik).
Manual (.pdf document): https://mega.nz/#!h1FlAK4b!8in0xbXGSnMHTwRboXFrafdePRTg1Tlrok-FhLTT9TU

Here is the test result in the 'Normal mode'.

Power measurement (normal mode). LVM 210 power meter. A1041 status page. Click to show a high resolution image. Pictures taken by HagssFIN.

Stable result for the power consumption (at wall) in the normal mode was 2104 W,
when the hash rate was averaging in the 31.5 Th/s area.

This gives us a following power efficiency (at wall) for the A1041 + Gospower setup:
2104 / 31500 = 0.06679 J per Gh/s.

Update August 31, 2019:
After previous test it was clear that there was nothing wrong with the meter devices.
The intake temperature has a huge impact in the power efficiency.
I was able to cool down the intake temperature to 38 Celsius,
and I got the best power efficiency result so far.

Here is the test result in the 'Normal mode'.

Power measurement (normal mode). A1041 status page. The intake temp is 38 C. Click to show a high resolution image. Pictures taken by HagssFIN.

Stable result for the power consumption (at wall) in the normal mode was 2000 W,
when the hash rate was averaging in the 31.7 Th/s area.

This gives us a following power efficiency (at wall) for the A1041 + Gospower setup:
2000 / 31700 = 0.06309 J per Gh/s.

Update September 29, 2019:
I wanted to have another test with the better intake temperature as in the August 31 test,
but this time with the high performance mode.

I was once again able to cool down the intake temperature to 38 Celsius,
so I had hopes for better power efficiency.

Here is the test result in the 'High performance mode'.

AvalonMiner 1041 running. Power measurement (high perf. mode). A1041 status page. The intake temp is 38 C. Click to show a high resolution image. Pictures taken by HagssFIN.

Stable result for the power consumption (at wall) in the normal mode was 2460 W,
when the hash rate was averaging in the 36.9 Th/s area.

This gives us a following power efficiency (at wall) for the A1041 + Gospower setup:
2460 / 36900 = 0.06666 J per Gh/s.

This was a clearly better power efficiency result than my original run with the high performance mode!
So after all these tests we can notice that the intake temperature plays an important role with the A1041.

8] Conclusion (top)
The miner design has changed a lot when we have moved from the Avalon 9 series to the new 10 series.
Built-in power supply unit is a logical solution, as a higher dc voltage and more control for the psu
makes is possible to achieve a top tier power efficiency level.

There has also been a change in the miner control topology.
The Raspberry Pi is there no more to work as a master for the AvalonMiner, but a custom controller board is now been used.
It is including the Kendryte AI chip made by Canaan themself, which I think is a really cool use of their own chip in the controller.
Another interesting fact in the controller board, is that they have been able to create daisy-chaining by using the eth port.
Sadly I didn't have chance to test this out and see how it works.

After seeing the test run results in both normal and high performance mode,
I think that the performance values are on spec only when the side-mounted built-in psu model is used.

With the Gospower power supply unit, the power efficiency is little worse than the advertised performance.
I would've love to see what is the power efficiency with the side mounted built-in psu I've seen in the A1041 promo pics.

Nevertheless, the power efficiency is very good, considering that this is based on a 16nm tech.

The cooling and overall feel of the miner design has a Canaan stamp on it. It's robust.
In overall, I like it and I would consider using these if I were to build a mining farm.

For home mining, the noise is obviously too loud,
which is also the problem with other manufacturer miners.

I would once again like to thank Canaan Creative for the opportunity to test this beast.
Special thanks to Steven and Lily.  Smiley

If you got any questions or comments,
please feel free to drop them here in this thread.  


9) How to order
(top)

Bulk quantity orders:
If you want to buy bulk quantity of miners, you can buy them directly from the manufacturer Canaan Creative.
https://canaan.io/shop/

Small quantity orders:
If you want to buy less than the minimum bulk sales quantity, you will need to order from your local official Canaan hardware distributor.

Click here to find out the up-to-date official distributor list.

Canaan Creative
:
www.canaan.io



10) Management software
(top)
There is a custom management software available, which is called FMS.
It can be used for miner management and firmware upgrades.

FMS User Guide and Installation File download:
https://downloads.canaan.io/downloads/software/avalon1041/fms/latest/

The AvalonMiner 1041 firmware update files have *.aup for the filename extension.
and are available for download here: https://downloads.canaan.io/downloads/software/avalon1041/app/








588  Bitcoin / Hardware / Re: Whatsminer M20 is announced and available for pre-order on: July 11, 2019, 02:33:45 PM
Yeah,
it was a real mess with the USPS...

I sent it to Phil via Finnish postal service Posti and it arrived at JFK airport in June 24.
Then there was a long pause in the status update and I was affraid that it is lost or stolen at the JFK airport for good.

I'm so happy that Phil received it after all,
but I'm sad that one fan broke during the shipping.

Thankfully Phil found a temporary solution to start the mining,
and I will supply him with a spare fan set.

@Phil, sent you a PM.

I don't know if this is a bit too much offtopic,
but I just want to say that sometimes the logistics can be a huge pain in the ass in bitcoin mining! Cheesy
589  Bitcoin / Hardware / Re: (Review/Guide) Ebit E9 Plus 9.0 Th/s, 1300W Bitcoin (SHA-256) ASIC miner on: July 01, 2019, 04:48:27 PM
Nope.

Solution ----> new psu, new fan
590  Bitcoin / Hardware / Re: (Review/Guide) Ebit E9 Plus 9.0 Th/s, 1300W Bitcoin (SHA-256) ASIC miner on: July 01, 2019, 02:56:41 PM
Okay, my bad then..

Why don't you simply set it to a lower PLL setting?
591  Bitcoin / Hardware / Re: (Review/Guide) Ebit E9 Plus 9.0 Th/s, 1300W Bitcoin (SHA-256) ASIC miner on: July 01, 2019, 10:23:31 AM
Hi,

I'm rather new to this.

Earlier I had my miner at a "company" who did everything for me, but after a bad year they decided to return the miner to me.

Here at my place the miner seems to get too hot, and it shuts down after a few minutes. The PLL is set to 750 - is it possible to reduce this to get a lower temperature?

I never tried this, so unfortunately I don't know for sure.
The graphic user interface doesn't support it.

Have you tried asking Ebang about this via skype ?
592  Bitcoin / Mining support / Re: Troubleshooting and repair guide for AvalonMiner models 721, 741, 761, 821 & 841 on: June 26, 2019, 03:42:34 PM
Thanks for the response, I'll email Canaan, to see if they can send me spares, hopefully, I'll get a reply.

You can also create an account (if you don't have one yet)
and submit a ticket at their website.

https://canaan.io/submit-ticket/
593  Bitcoin / Mining support / Re: Need latest firmware for whatsminer m3x on: June 23, 2019, 10:27:19 PM
Firmware downloads at the manufacturer (MicroBT) website:
https://www.microbt.com/server/firmware.html
594  Bitcoin / Hardware / (Review/Guide) WhatsMiner M20S 68.0 Th/s, 3260 W Bitcoin (SHA-256) ASIC miner on: June 17, 2019, 11:35:16 PM
(Review/Guide) WhatsMiner M20S 68.0 Th/s, 3260 W Bitcoin (SHA-256) ASIC miner


Picture copyright (c) Pangolinminer.com website.

1) General information, other items needed
2) Unpacking
3) Overview
4) Installation
5) Configuration
6) Testing
7) Power consumption measurement
8] Conclusion
9) How to order
10) Video review by philipma1957


Last updated in: June 21, 2019.

Click here to download this document in .pdf format.

1) General information, other items needed
(top)
WhatsMiner M20S is a Bitcoin (SHA-256) ASIC miner using 12nm ASIC chip technology,
manufactured by Shenzhen Bit Microelectronics Technology Co., Ltd (headquarters in Shenzhen, China).
They are also known short as MicroBT.

This is a standalone miner with a built-in controller board and a built-in power supply unit.
The advertised nominal hashrate for this particular model is 68.0 Th/s with a nominal power consumption of 3260 Watts.

It weights 12.5 kg and the outer dimensions are 385 mm (L) x 160 mm (W) x 240mm (H).

MicroBT
: www.microbt.com

Pangolinminer (distributor): www.pangolinminer.com
This is a ref. link.

Technical specifications:
Quote
WhatsMiner M20S (68.0 Th/s)

Hash rate: 68.0 Th/s (+-5%)
Power consumption: 3260 W (+-10%)
Power efficiency: 0.048 J / Gh/s
AC voltage input for the power supply: 200 - 240 VAC
DC voltage input for the miner: 12 VDC
ASIC chip type: 12nm Bitcoin (SHA-256) ASIC chip
ASIC chip quantity per hash board: 105 chips
Number of hash boards per unit (miner): 3 hash boards
ASIC chip quantity per unit: 315 chips
Cooling: 2pc.  140 mm x 38 mm 12 VDC 9.0 A, 7400 rpm cooling fan, model:
             Delta PFC1412HE-00 (front and back, in a push-pull configuration).
Weight: 12.5 kg
Dimensions: 385 mm (L) x 160 mm (W) x 240mm (H)
Working temperature: -5℃  -  35℃
Warranty time: 180 days after shipment

Other items needed:
- Power cord with a IEC320 C19 connector and thick wire gauge(I used a cable with 1.5mm2 wires).
- Ethernet cable to go to your router/switch
- Computer to set initial pool and configuration settings.

2) Unpacking
(top)
This M20S is an sample unit provided by the Pangolinminer (www.pangolinminer.com, this is a ref. link)
and DHL was the courier used in this delivery.

The delivery this time was unbelievably short.
It was shipped in Sunday and I had it in my hands in Tuesday.
I really got to give 5 stars to both DHL and Pangolinminer for the logistics part.

The packing was done carefully with proper packing material protecting the miner.

A power cable is included with the miner, which is nice.
It took me only little effort to change the original connector to a Type F ('schuko') one,
which is used here in Finland and in lots of other European countries too.
I only recommend this plug change for professional guys.



Opening the package and the power plug change. Click for a high resolution image. Pictures taken by HagssFIN.

3) Overview (top)
Here is a set of images showing the WhatsMiner M20S miner and the built-in WhatsPower P20 power supply unit.

Click to show a high resolution image.







I did a quick visual inspection for the miner as I usually do and it looked to be in a good condition.
I didn't notice any quality issues or any shipping damages etc. .
And I carefully rotated the miner around to make sure that there are no loose parts inside the miner.

4) Installation (top)
The installation with this miner is a very quick process, because of the built-in power supply unit.

For the network communication you need to connect an Ethernet cable to your miner
and the other end of the cable to your network's router/switch device.

And then you need a good quality C19 power cord which fits into your electrical power socket.
Please make sure that it is rated for at least 16A continuous amp rating.

The miner network settings are set to the DHCP mode as a default option.
This means that the miner will acquire an IP address automatically from the router's DHCP IP address pool.
You can find out the IP address fairly easy e.g. by accessing your router web configuration page.

There is also an official IP found program called "WhatsMinerTool".
This program makes it possible for you to use the miner IP found function
and figure out the miner IP address.

WhatsMinerTool User Guide & Software:
https://drive.google.com/open?id=1XthbZPFc0S-FvMi9MqpLOJlUaFAc4auW



When the initial setup is ready, power on the miner and start by finding the miner IP address,
After the miner IP address is known, it is possible to move on to the next step, which is Configuration.

5) Configuration (top)
First you need open a web browser and go the miner IP address.
The miner will then ask you for the user credentials.
Username: root
Password (default): root


Login screen. Click to show a high resolution image.

After that it is time to setup the mining pool settings.
You need to go through menus and find the Cgminer configuration page.
Click the drop down list and click 'custom'.

Now you are able to setup any pool address of your own choice.
You can set this miner to mine any SHA-256d algorithm based cryptocurrency in any mining pool of your choice.
This miner is not using the AsicBoost.

You can put the pool stratum address, username and password for three different pools in a priority order: Pool 1 > Pool 2 > Pool 3.
So if the first pool dies for some reason, the miner will automatically continue mining with the second pool.
And if the first and second pools are dead, the miner will then automatically continue mining with the third pool.


Cgminer configuration page. Click to show a high resolution image.

Miner hash board frequency and cooling fan settings are automatic, there is no possibility to have your custom settings.

When you have all the settings ready, you can press 'Save & Apply'.

Then you can go through menus and click 'Reboot' to reboot the miner.

The startup process for the miner takes some time as it goes through the hash board frequency settings.

So you need patience when you start up this machine and
there is no need to be worried even though the numbers may look weird at first.
The miner also goes through few cgminer software restarts during the cold startup,
which is totally normal behauviour for this miner.

After the final cgminer restars, the cold startup process is ready.
And after that the miner really starts to do the mining.
You should now be able to see the miner working at about 68 Th/s hash rate.


Miner status page. Click to show a high resolution image.

You can also check the official instructions for both installation and configuration.

The official user guide (for the M10S) can be found here:

https://drive.google.com/file/d/1rmwKdSHjMay3c6TL2TQxNTERz5EW7OFp/view?usp=sharing
Please Note! This documentation is for the M10S model.

MicroBT support web page:
https://www.microbt.com/server/support.html

Pangolinminer support web page:
https://pangolinminer.zendesk.com/hc/en-us/articles/360016940133-Whatsminer-M10S-User-Guides-Solutions
Please Note! This documentation is for the M10S model.


In the miner web configuration page, there are also pages for the system log and Cgminer API log.

By reading the log texts you are able to see specific details about the miner operation
and this kind of information is really helpful in case you need to do some troubleshooting.

These following screenshot images will demonstrate rest of the pages available in the miner web configuration
and this image set should provide you a good overview on the miner web configuration page.


System log and Cgminer API log. Click to show a high resolution image.


System status overview and System properties. Click to show a high resolution image.


Administration page and Interfaces page. Click to show a high resolution image.


Miner log page. Click to show a high resolution image.


Processes page and Reboot page. Click to show a high resolution image.

6) Testing (top)
When the miner settings were set and ready to go, it was time to test the miner and see how it starts running.

Just like with the S9, the M20S hash board frequency settings are also set automatically during the startup process.
The M20S is also able to control the power supply unit (P20) and thus adjust the dc output voltage fed to the hash boards.
The goal with this setup is to get the maximum performance possible.

When the miner was ready with the startup process, the hash rate rose to about an average of 69.6 Th/s area.


Miner status page. Click for a high res. image.

The power consumption was also measured during this test. --->

7) Power consumption measurement (top)
The power measurement was done with Perel E305EM6-G energy meter.
Technical specs data sheet (.pdf document): https://mega.nz/#!Np0RTaTB!QS53Vov3tOXcxmg_f2-24YzcYmMyRymHu6MGnE8jXLg


Perel E305EM6-G. Click for a high res. image. Picture taken by HagssFIN.


Power measurement. Click to show a high resolution image. Picture taken by HagssFIN.

A stable result for the power consumption at wall was 3370 W,
and the average hash rate for the mining was 69.6 Th/s.

These numbers give us a following power efficiency (at wall): 3370 / 69600 = 0.04842 J per Gh/s.

8] Conclusion (top)
WhatsMiner M20S is a Big Beast for a miner and it is very efficient piece of gear in the currect Bitcoin ASIC miner hardware market.
The MicroBT guys have been able to produce very power efficient and competitive hardware in last few years
and they make a serious competitor to manufacturers like Bitmain, Canaan and Bitfury.

The M20S is a very dense package,
the nominal power load is very high, close to 3.4kW (!).
But luckily the guys have made great job in the hardware design.
I didn't have any heat issues with my miner.

There are large sized heat sinks with high rev. cooling fans
and the miner doesn't get too hot if you are in an environment within the technical specs limits.

This is an extremely loud miner as most of the modern ASIC miners are,
and I think it is quite obvious thing to say that you don't want to have a one with you in the bed room.

This machine performed just as advertised, actually a little better.
I got an average hash rate of 69.6 Th/s and the nominal rate is 68.0 Th/s (+-5%).

I think that this miner is yet again a great improvement in the WhatsMiner series.

I would like to thank Team Pangolinminer and Laurent, for sending this miner as a sample unit and
for the chance for me to do another WhatsMiner review here at the forum!

If you got any questions you'd like to ask, you are welcome to drop them in this thread.
I will try to give my best answer.

9) How to order (top)
Shenzhen Bit Microelectronics Technology Co., Ltd.  a.k.a. MicroBT has an official website in which you can make an order.

Website: www.microbt.com


They also have official distributor partners for overseas sales.
See more details at the overseas distribution partner Team Pangolinminer website.

Website: www.pangolinminer.com  This is a ref. link.

10) Video review by philipma1957 (top)
595  Bitcoin / Mining support / Re: Troubleshooting and repair guide for AvalonMiner models 721, 741, 761, 821 & 841 on: June 16, 2019, 04:06:32 PM
@soymoji
Are you able to test it with another Rasp Pi?

Are you able to test it with another AUC3 converter?
596  Bitcoin / Mining support / Re: Troubleshooting and repair guide for AvalonMiner models 721, 741, 761, 821 & 841 on: June 16, 2019, 11:29:17 AM
If the old paste is bad,
I would clean it with isopropyl alcohol
and then re-paste it with a good quality thermal paste.
597  Bitcoin / Mining support / Re: A921 Error 131073 (HUFAILED) on: June 16, 2019, 11:26:30 AM
Thank you HagssFIN. Brought it home and tested it again in the 27c environment and it seemed ok. So it must be thermal paste on 3 of the boards that made them fail hot in 40c; even tho 40c is hot and I know it; still, other miners work alright when downclocked.

Note to myself and others; the error codes are bit flags. So something like 193 is 128 + 64 + 1 and therefore means (in the same order): was too hot before; is too hot now; is idle now

Topic marked as solved

Yes! That's correct. Smiley
598  Bitcoin / Pools / Re: [∞ YH] solo.ckpool.org 1% fee solo mining USA/DE 252 blocks solved! on: June 16, 2019, 09:31:55 AM
@Fruitman
That's the spirit, you have the right attitude  Smiley
599  Alternate cryptocurrencies / Mining (Altcoins) / Re: You say you cant mine bitcoin with your pc meaningfully... i disagree, help me! on: June 15, 2019, 07:27:00 PM
This is altcoins mining,
the end of story.
600  Bitcoin / Hardware / Re: Whatsminer M20 is announced and available for pre-order on: June 13, 2019, 10:03:39 PM
3350 W is the max. power capacity at the low DC voltage rail.

It is a server grade psu so it can handle the nominal max. power 24/7/365.


I would not necessarily recommend overclocking this.
It is already pretty damn well optimized for max. performance.
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