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501  Bitcoin / Hardware / Re: Bitmain to release S17E 64TH on: September 06, 2019, 12:40:02 PM
My guess would  be $3650 based off the price of the S17 53TH and 1 month earlier delivery. Looks like we'll find out on Monday.

https://blog.bitmain.com/en/bitmain-expands-in-demand-antminer-17-series-with-two-new-miners-reveals-specifications-and-selling-times/
502  Bitcoin / Mining speculation / Re: <$0.05 Power on Natural Gas on: September 05, 2019, 05:03:05 PM
I agree, there are a lot of other factors. You're not going to be able to slap a 20,000lbs generator in your back yard and get 3 cent power.

The site would need to be in an industrial area with the infrastructure to support industrial level use. In order to get the low prices, you need to use a large amount. Residential rates are significantly higher.

Here's an example for published rates in upstate NY.

Service
Supply

On average, it looks like total cost would be between $3 and $4 per 1000/ft^3.

But absolutely, for a given address the utility could tell you to get the level of service you need they'd have to run new pipe from a larger supply line, and that would be very expensive. But it's the same game you play to get megawatts of electrical hookup.

For industrial applications, I don't think the usage is all that high or unusual.

31.5% of electricity generated in the USA came from natural gas in 2018 (Source). So in general terms, I don't think infrastructure is an issue. The price in Oklahoma is probably so low because they have an abundance of supply capacity available.

An estimate from Generac in this white paper puts installation cost at $150 per kW for the generator, and an additional $10-$20 per kW for the gas hookup from the utility. If you figure the high end for the gas hookup, that would be $127,500 for the installation. So together with my wild estimate for 2nd hand cost of the generator, it would be $327,500, which comes out to $0.013/kWh over a 5 year life.

I think the biggest issue would be that natural gas prices can be pretty volatile. You'd have to be pretty sure they'd stay low or continue dropping to make that kind of investment. Get a Green New Deal candidate in the White Hose and it'd be all over....

I just thought it was interesting that the cost seemed to be in the ball park of competitive.
503  Bitcoin / Hardware / Re: Canaan Avalon 1066 on: September 05, 2019, 03:11:53 PM
Now available on blokforge for Nov and Dec batches.

https://blokforge.com/product-category/new-miners/
504  Bitcoin / Mining speculation / <$0.05 Power on Natural Gas on: September 04, 2019, 03:39:59 PM
Anyone using a natural gas generator to power your mining farm?

A few years back I got a backup generator that runs on natural gas installed at my home. It's spec. sheet listed the fuel usage, so I did the calculations to see how much it cost to run per kWh and found it came out to about $0.10 per kWh, which is about half of what I pay the utility for electricity. It's a standby generator, so it could not be run continuously, and it's loud enough that my neighbors would kill me if ran it 24/7 anyway, but it got me curious so I did some research on larger prime power generators and natural gas prices around the USA.

Natural Gas Prices by State - https://www.chooseenergy.com/data-center/natural-gas-rates-by-state/

Industrial rates for gas in some states are really low. The lowest right now is Oklahoma, at $2.14/1000 ft^3.

Using $2.14/1000 ft^3, and specs from Generac's website for their large generators that are rated for prime power, I came up with these #s. I estimated the maintenance charges based on ranges this company gave for service contract rates. I did not take into account the cost of purchasing the generator, only the operating cost and gas cost. On the larger side of things, if you could purchase a 2nd hand SG750 for $200,000 (wild guess based on what I'm seeing on ebay...) and spread that cost over a 5 year run time at 75% load, it would come out to $0.00812/kWh.



Generac SG150 14.2L, including $800/per month for maintenance

75% load 112.5kW, $0.0426/kWh
50% load, 75kW, $0.0511/kWh



Generac SG250, including $1000/month for maintenance

75% load, 187.5kW, $0.0349/kWh
50% load, 125kW, $0.0416/kWh



Generac SG450, including $1200/month for maintenance

75% load, 337.5kW, $0.0315/kWh
50% load, 225kW, $0.0351/kWh



Generac SG750, including $1500/month for maintenance

75% load, 562.5kW, $0.0258/kWh
50% load, 375kW, $0.0289/kWh
505  Bitcoin / Hardware / Re: What to do with all the old s-9s. on: September 04, 2019, 01:55:05 AM
Might be more complicated than you want to go, but you might consider building an adapter to fit a larger diameter fan. This one moves 1.7 times more air at about same noise level.

https://www.ebay.com/itm/for-15-cm-super-large-air-volume-violence-cabinet-fan-AFC1512DG-1-8A-15CM/183040983448
506  Bitcoin / Hardware / Re: Canaan Avalon 1066 on: September 02, 2019, 08:23:20 PM
Looks like November batch is open for small orders for $1450.

https://canaan.io/product/avalonminer-1066-november-batch/

edit: it could just be a glitch on their web page. The main page still says the site is for bulk purchases only.
507  Bitcoin / Hardware / Re: Whatsminer m21s arrives this sat the 27th of July on: August 30, 2019, 02:47:51 PM
I think even before the tariff situation many companies were looking for other alternatives, Vietnam for example.

I'm not so sure there's much advantage of building high cost and low complexity items like these in China vs USA. A $300 cellphone is another story ... 10X more complicated and 10X cheaper. 50% of Samsung's chip fab capacity is in Vietnam, and TSMC's is mostly in Taiwan, so the real guts of the miners are probably not originating in China anyway.
508  Other / Meta / Re: Stake your Bitcoin address here on: August 29, 2019, 02:10:16 AM

Code:
-----BEGIN BITCOIN SIGNED MESSAGE-----
This is wndsnb from bitcointalk.org. August 28, 2019
-----BEGIN SIGNATURE-----
31wndsnb1Mfe4QaKsSVMyDKRX1hoMxkt6g
H7oHe5KmTQHhIpyAAevRxNLa3pi+4JKbEAMIPPcQRD96TUeSdaqG0QM8e8U5fd8EtSV+W4y7JPvqe0o5caEjcus=
-----END BITCOIN SIGNED MESSAGE-----
Quoted, but I cannot verify it... what wallet are you using? Huh

Most of the common verification systems are unable to verify "3-type" addresses... and it's not verifying in Trezor (which is the only one I know that works with P2SH addresses) Undecided

Electrum. I just tested it again and it works for me.
509  Other / Meta / Re: Stake your Bitcoin address here on: August 29, 2019, 12:32:15 AM

Code:
-----BEGIN BITCOIN SIGNED MESSAGE-----
This is wndsnb from bitcointalk.org. August 28, 2019
-----BEGIN SIGNATURE-----
31wndsnb1Mfe4QaKsSVMyDKRX1hoMxkt6g
H7oHe5KmTQHhIpyAAevRxNLa3pi+4JKbEAMIPPcQRD96TUeSdaqG0QM8e8U5fd8EtSV+W4y7JPvqe0o5caEjcus=
-----END BITCOIN SIGNED MESSAGE-----
510  Bitcoin / Hardware / Re: Whatsminer m21s arrives this sat the 27th of July on: August 28, 2019, 11:01:35 PM
We'll hopefully the Trump tax will motivate some American companies to get into the mining asic business. Would be great to have AMD and Nvidia in the game.
511  Bitcoin / Hardware / Re: Whatsminer m21s arrives this sat the 27th of July on: August 28, 2019, 08:43:23 PM
We just need a pullback below 6K to quench the craziness and give us another chance to get reasonably priced gear. After that, a bull run to up to the halving would be great....

Down below $9700 ... could be on our way there now.
512  Bitcoin / Hardware / Re: Whatsminer m21s arrives this sat the 27th of July on: August 28, 2019, 02:30:16 PM
If you try to split it you would need to put a fuse or breaker on each leg or you're just asking for trouble. Without fuses or breakers, if one cable fails or comes loose the other cable is now taking the full load and could go up in  flames.
513  Bitcoin / Hardware / Re: Whatsminer m21s arrives this sat the 27th of July on: August 28, 2019, 01:36:41 PM
[...]

One option could be to make your own 10 AWG cable.

https://www.mouser.com/ProductDetail/Schurter/43000921?qs=%2Fha2pyFaduhFb9VPTXCo5zKca%252BgdnppnLs1JQQYxQIQ%3D
https://www.schurter.com/datasheet/0921

https://www.homedepot.com/p/Southwire-By-the-Foot-10-3-600-Volt-CU-Black-Flexible-Portable-Power-SOOW-Cord-55809799/204632922

The datasheet for the connector says it only supports up to 12 awg wire, but I bet you could get the 10 awg in with a little effort.
514  Economy / Computer hardware / Re: [WTS] Older GPUs - FREE on: August 26, 2019, 07:46:34 PM
Dropped price to $0!

id happily have them if i could get them to the UK.... always hated USA for there expensive shipping rates. can get stuff like this sent from china to the UK for £5 yet the USA want £30 a card,,,

Not sure what would be involved to get them shipped to the UK, but if you can figure it out and get me a shipping label they are all yours. Total weight for all the cards is 24 lbs.
515  Economy / Computer hardware / Re: [WTS] Nvidia 1070 and 1080 GPUs -- Price Reduced on: August 26, 2019, 02:12:43 PM
It's good to start mining the 1080?

Well ... according to whattomine.com, with $0.10/kWh power it will profit about $0.35 a day. With free power it will profit around $0.70 a day. So I'd have to say no ... marginal even if your power is free unless you can get them at 1/2 the market rate.
516  Economy / Computer hardware / Re: [WTS] Older GPUs - FREE on: August 26, 2019, 01:58:34 PM
Dropped price to $0!
517  Bitcoin / Hardware / Re: Whatsminer M20 is announced and available for pre-order on: August 26, 2019, 12:58:10 AM
50/50 split deal seems dangerous. Would your power guy take a loss to uphold his end of the deal? Or would he just shut it down and send you your gear back? Seems overly stressful since you need to make decisions about what gear to buy and what's good for you is not good for him. Gives me a headache just thinking about it.

I assume you know his operating cost and are making decisions based on that to keep it profitable for both of you?
518  Economy / Computer hardware / Re: [WTS] Nvidia 1070 and 1080 GPUs -- Price Reduced on: August 25, 2019, 01:41:25 PM
Well that didn't take long, last two 1080s sold on Ebay.

Dropping the price for the 1070 to $175. I'll give it another couple days before I list it on Ebay.
519  Economy / Computer hardware / Re: [WTS] Nvidia 1070 and 1080 GPUs on: August 24, 2019, 03:54:55 PM
Last 2 Asus 1080s now on ebay but offer here is still valid until it sells.

https://www.ebay.com/itm/273978520544

The 1070 will go on ebay next....
520  Bitcoin / Mining speculation / Re: Bitmain take a new order of mining chips on: August 24, 2019, 12:38:46 PM
That article doesn't make much sense. The 50TH must refer to the the hashrate of the end product and not the single chip. Maybe they mean they placed an order for enough chips to make 600,000 miners? If they were all s17s that would be 37% of the current network hashrate.

This article about the same thing states that only some of the order are the new 7nm chips.

https://bitcoinist.com/bitmain-to-increase-hashrate-by-50-with-600000-new-mining-chips/

But it also implies that a single chip does 50TH.
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