Topic: Whatsminer m21s arrives this sat the 27th of July - page 2. (Read 802 times)
Has anyone tried using a splitter on this miner? I feel like it's a horrible idea but figured I would ask first. I got a good deal if I want it for the 54th models of these m21s's but... I run all my miners on pdu's and even at 3240, I don't see how this can be reliable plugged into a pdu pulling that much power. Unless the power cord coming out of the unit split in 2 (Sort of like the bitmain s17's do) and I can plug them into each bank.
yeah it is tough. I mined since 2012.
I have found that if you are right on the boarder of a safe load over time 3,6,9 months that wire starts to fail.
These units are on the border of safety for the c19/c20 cables. So if you test if could be good for weeks or even months then fail.
I could bullshit like I am an expert on the physical property of wire coatings. Truth is I am not ,but I am well read.
Most wire covers are plastic derived vinyl based insulation. Constant warmth tends to slowly damage them and they fail.
I have had more then a dozen warm wires melt and fail over time. Latest one was these pcie wires in this psu see link
https://www.ebay.com/itm/200V-240V-2450W-Power-Supply-for-Antminer-S9-T9-S7-L3-Mining-LOT-MA/253950507883?
ran none stop from Nov 2018 to aug 2019 finally failed last week.
I have had iec 320 13/14 cables fail.
and c19/c20 cables
all were over 3,6,9,12 months time as they were close to the edge.
I have found that if you are right on the boarder of a safe load over time 3,6,9 months that wire starts to fail.
These units are on the border of safety for the c19/c20 cables. So if you test if could be good for weeks or even months then fail.
I could bullshit like I am an expert on the physical property of wire coatings. Truth is I am not ,but I am well read.
Most wire covers are plastic derived vinyl based insulation. Constant warmth tends to slowly damage them and they fail.
I have had more then a dozen warm wires melt and fail over time. Latest one was these pcie wires in this psu see link
https://www.ebay.com/itm/200V-240V-2450W-Power-Supply-for-Antminer-S9-T9-S7-L3-Mining-LOT-MA/253950507883?
ran none stop from Nov 2018 to aug 2019 finally failed last week.
I have had iec 320 13/14 cables fail.
and c19/c20 cables
all were over 3,6,9,12 months time as they were close to the edge.
Yes my concern is also the load on the c19/c20. Close to the 16A rating. Although the M20S on Pangolin goes from 68T to 62T with power rating from 3260W to 2977W. On my order it does not state what the Th/s rating will be so my guess is it will be what they ship. So you could get a 62T version which would give it a bit more safety on power consumption and if you can run the M20S on low power mode then that would reduce the noise. So many decisions and unknowns.
I am all for testing and science. But my gut tells me the m20s and the m21s will struggle in the box.
Upside is if it works you can mine them in your home.
Both unit m20s and m21s are pushing the envelope of safety in the power cord. as the c19/c20 jacks rate at 16amps in a 24/7/365 constant run time.
my tests on 3 separate pieces 2x m20s and 1 m21s show they pull over 3400 watts close to 3500 watts.
all my tests were done with power in the 237 to 243 volts range.
3500/243 = 14.403 amps = okay
3500/237 = 14.768 amps = okay but in my tests power cords have open air so they will rate closer to the 16amps
in a hot box the power cord will stress more due to heat.. and that 14.768 will become borderline safe.
in clifton farm where noise is a none issue we range from 217 to 231 watts
3500/231 = 15.1515 amps = okay and we placed the three units closest to the cool air intake fans
3500/217 = 16.129 amps = wrong but just barely. plus 3 huge fans hit it with cold air.
So I caution you with the box
1) really check it a lot.
2) measure volts
3) measure watts
4) measure temps
5) measure sound.
good luck would love to see if you can tame these beasts. m21s and or m20s
@ whatsminer please give us 3 or 4 speed settings
Upside is if it works you can mine them in your home.
Both unit m20s and m21s are pushing the envelope of safety in the power cord. as the c19/c20 jacks rate at 16amps in a 24/7/365 constant run time.
my tests on 3 separate pieces 2x m20s and 1 m21s show they pull over 3400 watts close to 3500 watts.
all my tests were done with power in the 237 to 243 volts range.
3500/243 = 14.403 amps = okay
3500/237 = 14.768 amps = okay but in my tests power cords have open air so they will rate closer to the 16amps
in a hot box the power cord will stress more due to heat.. and that 14.768 will become borderline safe.
in clifton farm where noise is a none issue we range from 217 to 231 watts
3500/231 = 15.1515 amps = okay and we placed the three units closest to the cool air intake fans
3500/217 = 16.129 amps = wrong but just barely. plus 3 huge fans hit it with cold air.
So I caution you with the box
1) really check it a lot.
2) measure volts
3) measure watts
4) measure temps
5) measure sound.
good luck would love to see if you can tame these beasts. m21s and or m20s
@ whatsminer please give us 3 or 4 speed settings
The designer says this.
The total cross-section of the cutouts in every dampener plate is bigger than the cross-section of the fan outlet.
So air-flow wise, the box should handle it.
I am considering paying him to have a redesign and order one for testing. I can post the heat results and then if they seem good then people can order from him thru eBay. Low power is an option but it's like owning a Ferrari but only putting it in first gear.
The total cross-section of the cutouts in every dampener plate is bigger than the cross-section of the fan outlet.
So air-flow wise, the box should handle it.
I am considering paying him to have a redesign and order one for testing. I can post the heat results and then if they seem good then people can order from him thru eBay. Low power is an option but it's like owning a Ferrari but only putting it in first gear.
I think it will over heat at high power setting.
I think at low power setting it will not be necessary to use it.
The issue is the unit is moving 3300-3500 watts of heat at high speed. It is old school 1 tube design not the shorter 2 tube stack design of the s17 or avalon a1041
The baffles will simply restrict the airflow and it will overheat.
s-9 = 1200-1400 watts high speed
m21s
m20s 3300-3500 watts high speed
m21s uses 140 mm fans it moves more air to cool 2x the heat
s9 uses 120mm fans it does not need to move as much air.
If the whatsminer went with the settings the newest s9 firmware offers :
-0.5 th
-1.0 th
-1.5 th
-2.0 th
-2.5 th
-3.0 th
low speed enhanced
i think the box could be used if you had multiple settings
pretend you had
55th top speed
50th
45th
40th ---------- this would pull say 40/55 x 3500 = 2545 watts this may not over heat.
35th
30th
I think at low power setting it will not be necessary to use it.
The issue is the unit is moving 3300-3500 watts of heat at high speed. It is old school 1 tube design not the shorter 2 tube stack design of the s17 or avalon a1041
The baffles will simply restrict the airflow and it will overheat.
s-9 = 1200-1400 watts high speed
m21s
m20s 3300-3500 watts high speed
m21s uses 140 mm fans it moves more air to cool 2x the heat
s9 uses 120mm fans it does not need to move as much air.
If the whatsminer went with the settings the newest s9 firmware offers :
-0.5 th
-1.0 th
-1.5 th
-2.0 th
-2.5 th
-3.0 th
low speed enhanced
i think the box could be used if you had multiple settings
pretend you had
55th top speed
50th
45th
40th ---------- this would pull say 40/55 x 3500 = 2545 watts this may not over heat.
35th
30th
For noise reduction I have been messaging a guy that sells this.
https://www.ebay.com/itm/273926631722?ul_noapp=true
He can redo the design for a m21s/m20 at a cost of 150 EUR and sell it then for 160 EUR. Do you think it would be an option to go this path to make it quieter to run the miner at full speed. He can put a 6 in exhaust port to flex duct the heat outside.
What do you think?
https://www.ebay.com/itm/273926631722?ul_noapp=true
He can redo the design for a m21s/m20 at a cost of 150 EUR and sell it then for 160 EUR. Do you think it would be an option to go this path to make it quieter to run the miner at full speed. He can put a 6 in exhaust port to flex duct the heat outside.
What do you think?
Hope so. Meter was at 001070.00 so 10 hours should be 16.5 to 17.5 kwatts
7 hours later meter reads 001081.67
1081.67
-1070.00
11.67
11.67/7 = 1.667 kwatts or 1667 constant watts it hashed at 29.054th so 1667/29.054 = 57.3759 watts a th on low so my hourly kwatt meter tends to be
more accurate then a cheapo kwatt meter.
so low speed is 57-58 watts a th
and right now in a cooler room it is 740 am, My fan speed is 1500rpm so you can use it on low speed in your home and not piss people off.
10 hour reading
1086.70
1070.00
16.70 kwatts /10 = 1670 watts after a 10 hour test. and hashing at 29059gh
so
1670/29.059 = 57.469 watts a Th.
This gear would be best for a place that can be noisy at least 1/2 the day. But that it needs to be quiet say six to 12 hours a day.
Pretend you do 56 for 1/2 and 29 for 1/2 you get an average of 42.5th each day.
Efficiency seems to be 57 to 58 watts on low which is somewhat disappointing.
It is about 61 to 63 watts on high speed which is pretty good.
7 hours later meter reads 001081.67
1081.67
-1070.00
11.67
11.67/7 = 1.667 kwatts or 1667 constant watts it hashed at 29.054th so 1667/29.054 = 57.3759 watts a th on low so my hourly kwatt meter tends to be
more accurate then a cheapo kwatt meter.
so low speed is 57-58 watts a th
and right now in a cooler room it is 740 am, My fan speed is 1500rpm so you can use it on low speed in your home and not piss people off.
10 hour reading
1086.70
1070.00
16.70 kwatts /10 = 1670 watts after a 10 hour test. and hashing at 29059gh
so
1670/29.059 = 57.469 watts a Th.
This gear would be best for a place that can be noisy at least 1/2 the day. But that it needs to be quiet say six to 12 hours a day.
Pretend you do 56 for 1/2 and 29 for 1/2 you get an average of 42.5th each day.
Efficiency seems to be 57 to 58 watts on low which is somewhat disappointing.
It is about 61 to 63 watts on high speed which is pretty good.
So you check meter at like 000070.00 and ten hours later it reads 000087.00 then 87-70 = 17/10 1.7kwatts an hour for low?
some high speed results
55,915 at 3460 watts gave me 61.87 watts a th. it is loud and industrial at high speed
second test I got
55,915 at 3480 watts about 62.2 watts a th.
I will do a low speed 10 hour watt use test. I have a hourly kilowatt meter.does very good numbers overnight more accurate then a kwatt meter.
I wish low speed was more power efficient then 60 watts a th which is why I will do a longer more accurate test.
it is quiet on low and does 29th and 1750 watts fans at 1750-1850 rpm
I just set it to high I am guessing it will not be quiet. Would love to see if it can do 55th
It is still tuning fans at 5500
Okay we are at 55.9th nasty pitch noise
pulls 3550 watts about 63.5 watts a th
so I am a bit under 56th spec at 55.9 but +- 5% with ease
my power at 3550 vs 3360 is +5.6% but they have watts at -+10 %
This is industrial if you run it at top speed and it easily can run in your house on low speed.
If you have it at home maybe you can turn it up in the day and down at nite.
55,915 at 3460 watts gave me 61.87 watts a th. it is loud and industrial at high speed
second test I got
55,915 at 3480 watts about 62.2 watts a th.
I will do a low speed 10 hour watt use test. I have a hourly kilowatt meter.does very good numbers overnight more accurate then a kwatt meter.
I wish low speed was more power efficient then 60 watts a th which is why I will do a longer more accurate test.
Yea best pricing was end of Q1, early Q2 with most shipping dates to go with.
My T2T 30T are pretty nice besides the lack of fan tuning unless temps are 50C which is never.
If the M21s is really that quiet, I'd be happy with that too. Only have room for 2200w so basically one more unit before having to replace gear.
My T2T 30T are pretty nice besides the lack of fan tuning unless temps are 50C which is never.
If the M21s is really that quiet, I'd be happy with that too. Only have room for 2200w so basically one more unit before having to replace gear.
it is quiet on low and does 29th and 1750 watts fans at 1750-1850 rpm
I just set it to high I am guessing it will not be quiet. Would love to see if it can do 55th
It is still tuning fans at 5500
Okay we are at 55.9th nasty pitch noise
pulls 3550 watts about 63.5 watts a th
so I am a bit under 56th spec at 55.9 but +- 5% with ease
my power at 3550 vs 3360 is +5.6% but they have watts at -+10 %
This is industrial if you run it at top speed and it easily can run in your house on low speed.
If you have it at home maybe you can turn it up in the day and down at nite.
Yea best pricing was end of Q1, early Q2 with most shipping dates to go with.
My T2T 30T are pretty nice besides the lack of fan tuning unless temps are 50C which is never.
If the M21s is really that quiet, I'd be happy with that too. Only have room for 2200w so basically one more unit before having to replace gear.
My T2T 30T are pretty nice besides the lack of fan tuning unless temps are 50C which is never.
If the M21s is really that quiet, I'd be happy with that too. Only have room for 2200w so basically one more unit before having to replace gear.
I wish as I could use ten yesterday.
I now have
2 m20s. Demo model
1 m21s. Demo model
1 s17 pro 53th----------------not a demo
1 t17 40 th -------------------not a demo
2 a1041 37th beta model
1 inno t3 t39------------------not a demo
And waiting on 1 Inno t3 t50.
What do I think of all the gear above?
If it were the world according to Phil
I would have purchased all s17 pro 53 th 100 of them I had a chance to buy 100 for 220000 usd the window was small and I was short that much cash. But it would have been a really good move.
By the time I got it I new I should have ordered more.
I have 160kwatts
so 100 s17 pro 53th set to low speed will pull 1450x100= 145kwatts and do about 100 x 40 = 4 ph
Back to the m21s. It is pretty quiet it is 91 f in my garage and it has a fan speed set to about 1800 rpm on low speed.
You can’t tell it is running on low speed. High speed it will wail.
The most disappointing of all above was the inno t3 t39
The avalon I can't judge since it was a beta model the psu is not the stock one.
I now have
2 m20s. Demo model
1 m21s. Demo model
1 s17 pro 53th----------------not a demo
1 t17 40 th -------------------not a demo
2 a1041 37th beta model
1 inno t3 t39------------------not a demo
And waiting on 1 Inno t3 t50.
What do I think of all the gear above?
If it were the world according to Phil
I would have purchased all s17 pro 53 th 100 of them I had a chance to buy 100 for 220000 usd the window was small and I was short that much cash. But it would have been a really good move.
By the time I got it I new I should have ordered more.
I have 160kwatts
so 100 s17 pro 53th set to low speed will pull 1450x100= 145kwatts and do about 100 x 40 = 4 ph
Back to the m21s. It is pretty quiet it is 91 f in my garage and it has a fan speed set to about 1800 rpm on low speed.
You can’t tell it is running on low speed. High speed it will wail.
The most disappointing of all above was the inno t3 t39
The avalon I can't judge since it was a beta model the psu is not the stock one.
These are shipping Nov. for everyone but Phil 
https://pangolinminer.com/product/whatsminer-m21s-with-psu/
1905 + shipping + trump tax
corrected the error.
1905 + shipping + trump tax
corrected the error.
Nice I knew you planned to spread out your gear purchases, but didn't know you were looking at the 21's. Nice to see Whatsminer is starting to launch units with working LPM, ideally this will role out for the other models soon. While nothing special at low power costs they are definitely viable, might be a nice unit to host with Pangolin for some if that service pans out. Keep the shipping and import costs down.
This sells for 1900
The m21s sells for 2800 - ***I think you mean the M20S ***
The m21s sells for 2800 - ***I think you mean the M20S ***
Spacer.
Feel free to post your thoughts on this unit.
edit: This m21s sells for 1900
The m20s sells for 2800
Pre trump tax
Pre shipping.
Both use 3300 watts.
One does 55 th the other does 68th.
So you get about 13 th for free power and pay 900 in cash for that.
0.00002777 x 13 x 10200= 3.67 a day so 900/3.67 = 245 days.
The extra shipping is 50
The extra trump tax is 225
So 275 extra if. USA based
Makes 1175/3.67= 314 days. So it may make no difference as to which you buy.
As 245 to 314 days is a lot.
M21s is in house will be running it soon. It basically looks just like the m20s.
So the good news it is up and running yeah baby.
It has a working low power firmware yesss!!!
imgur is down can not link photos
back up and here is gui it has yet to tune on low
tuned on low it is really quiet fans are well under 2000 rpm
does 29th at 1750 watts about 60 watts a th
this is a 1900usd unit running it at 29th means a long roi even if power is free ,but it would make a decent space heater for the winter.
So if noise is an issue you could use this gear. 29th is 29 x 0.00002777 x 9500 = $7.65 usd a day for low speed and free power.
Feel free to post your thoughts on this unit.
edit: This m21s sells for 1900
The m20s sells for 2800
Pre trump tax
Pre shipping.
Both use 3300 watts.
One does 55 th the other does 68th.
So you get about 13 th for free power and pay 900 in cash for that.
0.00002777 x 13 x 10200= 3.67 a day so 900/3.67 = 245 days.
The extra shipping is 50
The extra trump tax is 225
So 275 extra if. USA based
Makes 1175/3.67= 314 days. So it may make no difference as to which you buy.
As 245 to 314 days is a lot.
M21s is in house will be running it soon. It basically looks just like the m20s.
So the good news it is up and running yeah baby.
It has a working low power firmware yesss!!!
imgur is down can not link photos
back up and here is gui it has yet to tune on low
tuned on low it is really quiet fans are well under 2000 rpm
does 29th at 1750 watts about 60 watts a th
this is a 1900usd unit running it at 29th means a long roi even if power is free ,but it would make a decent space heater for the winter.
So if noise is an issue you could use this gear. 29th is 29 x 0.00002777 x 9500 = $7.65 usd a day for low speed and free power.
Pangolinminer is shipping me a m21s. Should come tomorrow.
This should do 56th and 3300 watts. Not sure 🤔 if it has a low speed.
This should do 56th and 3300 watts. Not sure 🤔 if it has a low speed.
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