Antminer S21: Bitmain’s Game Changer in the Bitcoin Mining World. - page 2.

FP91G

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I'll add danieleither's picture to the discussion

Specifications 200T 3500W 17.5J/T
https://shop.bitmain.com/product/detail?pid=00020231212155051379R2N3JfQc065A
3500/220 that's almost 16 amps
3900/220 that's almost 18 amps

And why make a new power connector if the C20 connector handles 20 amps perfectly?
New ASICs are no longer suitable for standard household outlets

philipma1957

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'The right to privacy matters'

Quote from: danieleither on January 13, 2024, 03:41:49 PM

I have ordered 24 x S21 195T. I asked Bitmain about the power cord and this was their response:

"Here is S21 Power cord. It will come with miner."

https://imgur.com/a/LbCCpSA

For those that can not view the image / link for any reason, it shows a diagram of a C20 to P13-4 pin power cord, which will plug into a PDU with C19 outlets.

So having 240 to 250 volt vs 220 to 230 volt will really help amps.

240volt x 15 amps is 3600 watts which may be enough may not if you pull 3900 watts

3900/240 = 16.25

right on the edges

of okay.

danieleither

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I have ordered 24 x S21 195T. I asked Bitmain about the power cord and this was their response:

"Here is S21 Power cord. It will come with miner."

For those that can not view the image / link for any reason, it shows a diagram of a C20 to P13-4 pin power cord, which will plug into a PDU with C19 outlets.

philipma1957

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'The right to privacy matters'

well then the s21 as I understand that cable can not be legal to run.

looks like a c14 custom end.

I am not aware of any 20 amp rated c14 plugs.

and a 20 amp plug is derated to 16.

16 x 208 = 3328

and the s21 pulls 3500 to 3900

so I see issues.

let me check what they spec power to the s21 maybe they say

230-277

https://shop.bitmain.com/product/detail?pid=00020231212155051379R2N3JfQc065A

reads 220 to 277

so 220 x 16 is 3520

which means a c20 to new end is barely legal

FP91G

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Quote from: philipma1957 on January 11, 2024, 11:27:08 AM

could you photo the power cable on the power connection side?

This is a power cord specially designed for the Antminer S21 miner and used for the Antminer S21 power supply. This power interface uses a new type of power plug completely different from the 17 series and 19 series miner power cord
https://www.zeusbtc.com/ASIC-Miner-Repair/Parts-Tools-Details.asp?ID=3247

But such sockets are very expensive in my opinion.

philipma1957

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'The right to privacy matters'

Quote from: mineshop.eu on January 11, 2024, 07:07:09 AM

Quote from: philipma1957 on January 11, 2024, 01:15:23 AM

Quote from: FP91G on January 10, 2024, 05:17:08 AM

Have you seen the new power connector for new Bitmain S21 ASICs?
I hope the cable comes with the ASIC.

Why is Bitmain inventing new connectors? New ASICs have the same power as the old s19 series. If you lose such a cable, you won’t be able to quickly buy it in a store.

no i think they are a 3500 watt miner.

which is not the same as the s19 series.

https://shop.bitmain.com/product/detail?pid=00020231212155051379R2N3JfQc065A

below is the highest power s19 3247 watts

https://shop.bitmain.com/product/detail?pid=00020230626114337330962EtM9r0640

so 253 watts more.

after running a lot of antminers I know some are better and some are worse.

So a rated 3500 watt unit will sometimes do 3650 watts.

Absolutely, we got and Sample unit few days ago and couldn't get nowhere near 3500w Cheesy

@200ths.
Power usage 3800-3900w.
Best Efficiency got on low power mode 160 th/s @ 2600w what is 16.4 j/ths which very efficient

yeah and 3800-3900 is within 10% of 3500 so they are covered. but my question is I see the end on the miner side. what is the cable on the wall/pdu side I would guess it need to be 10ga or a very short 12ga if I am pulling 3900 watts on a 208 volt that is 18.75 amps which is a lot for a 12 gauge c19/c20 cable.

could you photo the power cable on the power connection side?

mineshop.eu

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Quote from: philipma1957 on January 11, 2024, 01:15:23 AM

Quote from: FP91G on January 10, 2024, 05:17:08 AM

Have you seen the new power connector for new Bitmain S21 ASICs?
I hope the cable comes with the ASIC.

Why is Bitmain inventing new connectors? New ASICs have the same power as the old s19 series. If you lose such a cable, you won’t be able to quickly buy it in a store.

no i think they are a 3500 watt miner.

which is not the same as the s19 series.

https://shop.bitmain.com/product/detail?pid=00020231212155051379R2N3JfQc065A

below is the highest power s19 3247 watts

https://shop.bitmain.com/product/detail?pid=00020230626114337330962EtM9r0640

so 253 watts more.

after running a lot of antminers I know some are better and some are worse.

So a rated 3500 watt unit will sometimes do 3650 watts.

Absolutely, we got and Sample unit few days ago and couldn't get nowhere near 3500w Cheesy

@200ths.
Power usage 3800-3900w.
Best Efficiency got on low power mode 160 th/s @ 2600w what is 16.4 j/ths which very efficient

philipma1957

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Activity: 4256

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'The right to privacy matters'

Quote from: FP91G on January 10, 2024, 05:17:08 AM

Have you seen the new power connector for new Bitmain S21 ASICs?
I hope the cable comes with the ASIC.

Why is Bitmain inventing new connectors? New ASICs have the same power as the old s19 series. If you lose such a cable, you won’t be able to quickly buy it in a store.

no i think they are a 3500 watt miner.

which is not the same as the s19 series.

https://shop.bitmain.com/product/detail?pid=00020231212155051379R2N3JfQc065A

below is the highest power s19 3247 watts

https://shop.bitmain.com/product/detail?pid=00020230626114337330962EtM9r0640

so 253 watts more.

after running a lot of antminers I know some are better and some are worse.

So a rated 3500 watt unit will sometimes do 3650 watts.

FP91G

legendary

Activity: 1820

Merit: 1121

Have you seen the new power connector for new Bitmain S21 ASICs?
I hope the cable comes with the ASIC.

Why is Bitmain inventing new connectors? New ASICs have the same power as the old s19 series. If you lose such a cable, you won’t be able to quickly buy it in a store.

mineshop.eu

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Quote from: FP91G on October 11, 2023, 12:14:54 PM

WhatsMiner M60 Series is Coming

Dear all valuable WhatsMiner customers and partners,

We are excited to announce that the WhatsMiner M60 series will be released at the Blockchain Life 2023 event in Dubai on October 24th.

We will release three lines of new WhatsMiner products to fully step into the 1XJ/T era!

https://microbt-whatsminer.com/whatsminer-m60-series-is-coming/

What characteristics do you want to see?

Yes love the competition, will be reporting live from this event

Whatsminer machines are very reliable and stable.
Even same performance as bitmain S21 generation same specs and cheaper price would put them in better position.

FP91G

legendary

Activity: 1820

Merit: 1121

WhatsMiner M60 Series is Coming

Dear all valuable WhatsMiner customers and partners,

We are excited to announce that the WhatsMiner M60 series will be released at the Blockchain Life 2023 event in Dubai on October 24th.

We will release three lines of new WhatsMiner products to fully step into the 1XJ/T era!

https://microbt-whatsminer.com/whatsminer-m60-series-is-coming/

What characteristics do you want to see?

safar1980

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Payment Gateway Allows Recurring Payments

Quote from: philipma1957 on October 09, 2023, 01:37:06 PM

Quote from: safar1980 on October 09, 2023, 01:15:15 PM

Under the spot contract, only 1 ASIC model is available for sale, and it seems to me that their new Antminer S21 ASICs discourage the desire to buy S19k Pro ASICs.
They used to have smaller batches of ASICs for sale.
https://shop.bitmain.com/product/detail?pid=00020230810124545653TwO4yKr106A8

Buying the January batch doesn’t work for me, but the sale of ASIC S19 will end in January

I have been buying 134 th s19xp's. Getting 2 more on the 17th of oct

How much did you buy the ASICs for?

How much did you buy the ASICs for?
In Russia, miners buy a new ASIC S19 90 terahash with 126 chips for $1,000. An ASIC with documents from customs costs $1,250, but this is not necessary for everyone.

Next, this ASIC is flashed into a mode of 110 terahash, 3500 watts and Bitcoin is mined and additionally received NMC,SYS,ELA

philipma1957

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'The right to privacy matters'

Quote from: safar1980 on October 09, 2023, 01:15:15 PM

Under the spot contract, only 1 ASIC model is available for sale, and it seems to me that their new Antminer S21 ASICs discourage the desire to buy S19k Pro ASICs.
They used to have smaller batches of ASICs for sale.
https://shop.bitmain.com/product/detail?pid=00020230810124545653TwO4yKr106A8

Buying the January batch doesn’t work for me, but the sale of ASIC S19 will end in January

I have been buying 134 th s19xp's. Getting 2 more on the 17th of oct

safar1980

legendary

Activity: 1708

Merit: 1615

Payment Gateway Allows Recurring Payments

Under the spot contract, only 1 ASIC model is available for sale, and it seems to me that their new Antminer S21 ASICs discourage the desire to buy S19k Pro ASICs.
They used to have smaller batches of ASICs for sale.
https://shop.bitmain.com/product/detail?pid=00020230810124545653TwO4yKr106A8

Buying the January batch doesn’t work for me, but the sale of ASIC S19 will end in January

philipma1957

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Activity: 4256

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'The right to privacy matters'

Quote from: stompix on October 08, 2023, 01:50:45 PM

Quote from: safar1980 on October 08, 2023, 12:58:38 PM

Antminer S21 for the Bitmain company was apparently very expensive, so there is not enough money to pay employees:

https://twitter.com/WuBlockchain/status/1710880716383494207

And just a few hours later after:

Quote

On the afternoon of October 7, Bitmain has repaid September wages, and stated that it only did not pay the performance salary of some people. It has also been repaid, and the basic salary has been released normally on September 30.

They have been selling for a year gear at three times the price, charging at one point 8k for an s19, that's probably the last company in the crypto world that would not be able to pay wages. Rather than the development of the S21 I tend to believe it's the unsold stock of miners and not honored deals that are affecting their business and a potential cashflow, they have around 300 people paid directly, what's that, even on above average wages that's less than 1000 miners.

They've moved the date, there is a January batch now available, seems like they really want to test miners' resolve during the halving.

Heck so far we are earning a profit this year.. Not much
my last 8 years
2016 good
2017 great
2018 okay
2019 loss
2020 okay
2021 really really really good
2022 okay
2023 a little ahead and a lot of work

2024 I am willing to take a small loss

I do not like to see the hydro 3 phase liquid gear as I am not looking to convert all my s19xp's to s21 hydros.

stompix

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Blackjack.fun

Quote from: safar1980 on October 08, 2023, 12:58:38 PM

Antminer S21 for the Bitmain company was apparently very expensive, so there is not enough money to pay employees:

https://twitter.com/WuBlockchain/status/1710880716383494207

And just a few hours later after:

Quote

On the afternoon of October 7, Bitmain has repaid September wages, and stated that it only did not pay the performance salary of some people. It has also been repaid, and the basic salary has been released normally on September 30.

They have been selling for a year gear at three times the price, charging at one point 8k for an s19, that's probably the last company in the crypto world that would not be able to pay wages. Rather than the development of the S21 I tend to believe it's the unsold stock of miners and not honored deals that are affecting their business and a potential cashflow, they have around 300 people paid directly, what's that, even on above average wages that's less than 1000 miners.

They've moved the date, there is a January batch now available, seems like they really want to test miners' resolve during the halving.

safar1980

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Antminer S21 for the Bitmain company was apparently very expensive, so there is not enough money to pay employees:

Bitmain, a dominant force in the Bitcoin mining hardware industry, announced on October 3 that it would temporarily halt a portion of its September salary disbursements for all its employees.

The decision was attributed to the company’s operational cash flow remaining negative throughout the month.

This development has raised eyebrows within the crypto community, especially as Bitmain remains a major player in the mining landscape. Notably, this announcement came shortly after the company’s recent conference in Hong Kong where it unveiled its advanced S21 mining machine.

The notice circulated internally, which was later verified by certain employees, highlighted the company’s challenges, particularly underscoring that its mining operations hadn’t met expectations. The message from Bitmain’s Executive Management Team (EMT) expressed an urgency to meet specific targets and objectives, commonly referred to within the company as POTA (Goal-oriented, mission).

philipma1957

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'The right to privacy matters'

Actually the 335 hydro is a direct attack against 100kwatt to 1 megawatt miners.

Most of us under 1 megawatt of power have 2 phase 208-240 power.

the hydro is 3 phase 380-415 volt power.

My mine has a 460 volt 3 phase that drops to 208-240 2 phase.

if I want to run one or more of the hydro miners it means buying a 380-415 three phase step down transformer.

yet another expense.

fast search I found this:

https://www.ato.com/30-kva-isolation-transformer.

I could do 5 units of hydro

cost for me is 5,100 plus shipping and install. and hydro cooling for the gear.

FP91G

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Quote from: ?? on ??

Quote from: kano on October 03, 2023, 03:50:19 AM

I dunno, did no one read the actual numbers on the bigger one?

335T 16J/T = 5.36kW - big number Tongue

And if the miner is offline you lose 335T until you fix it.

This 335T number is just ridiculous - over sized, over powered, just keep throwing more chips at it, miner - purely for marketing a big number, but not at all intelligent.

If I glue 3 of my Watts miners together I get 390TH - wow that would be even higher - lol

Compared with previous type, which are

S19 XP (140Th, 3010W) vs S21 (200Th, 3550)
S19 XP Hyd (255Th, 5304W) vs S21 Hyd (335Th, 5360)

S21 series has 1.3x-1.4x more hashrate. But on other hand, overall watt usage has little difference and have same physical size. While i agree with your point about marketing, it looks like they also consider miner who want replace their ASIC without too much change on their side.

P.S. number i mentioned taken from https://www.asicminervalue.com/efficiency/sha-256.

I think soon there will be new firmware for these ASICs that will make their use more interesting for miners. And with the electricity consumption, Bitmain was cleverly thought out so as not to force miners to redo the electrical wiring to install new ASICs.

kano

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Linux since 1997 RedHat 4

Quote from: mineshop.eu on August 30, 2023, 08:39:32 AM

...

So, are you advertising that you are selling these miners that violate the cgminer GPLv3 license?

Topic: Antminer S21: Bitmain’s Game Changer in the Bitcoin Mining World. - page 2. (Read 1301 times)