[ANN] Sfards:SF100, the first 28nm Dual-Mode Miner is accepting pre-order now

[dmwardjr]

One guy over in the "Group Buy" sub-forum suggested that it would take well over 386 YEARS to break even in terms of the miner cost. That was with the usual fantasy provisions of "free electricity and no difficulty changes".

While I expected a "premium" price, this is more "Extreme Premium" pricing.

Sounds like someone can't count then :s Under those conditions even a U3 would make $18,000 in that time.

I saw that in a sub forum as well.  I think they meant to put in a decimal point instead of a comma on the number of days.  They also did not state their power costs.

[Dexter770221]

Numbers:
Income per day: 8$
Power consumption @wall (what efficiency PSU?): 960W
Power consumption /24h: 23kWh
Cost per kWh (1st calc): 0.08$/kWh
Cost per kWh (2nd calc): 0.1$/kWh
1 day cost (1st calc): 1.84$
1 day cost (2nd calc): 2.3$
Income /day (1st calc): 6.16$
Income /day (2nd calc): 5.7$
Price: 1129$
ROI (1st calc): ~183 days
ROI (2nd calc): ~198 days

All calculations without difficulty (and price ofc) increase taken into consideration....

[dmwardjr]

Numbers:
Income per day: 8$
Power consumption @wall (what efficiency PSU?): 960W
Power consumption /24h: 23kWh
Cost per kWh (1st calc): 0.08$/kWh
Cost per kWh (2nd calc): 0.1$/kWh
1 day cost (1st calc): 1.84$
1 day cost (2nd calc): 2.3$
Income /day (1st calc): 6.16$
Income /day (2nd calc): 5.7$
Price: 1129$
ROI (1st calc): ~183 days
ROI (2nd calc): ~198 days

All calculations without difficulty (and price ofc) increase taken into consideration....

I'm curious...  "Income / day" calculations...  Was that BTC only or BTC and LTC combined?

[Dexter770221]

....
I'm curious...  "Income / day" calculations...  Was that BTC only or BTC and LTC combined?

Both combined. As SFARD announcement in 1st page...

(Take June 19th price for instance, one SF100 generates 4.2 USD from Bitcoin and 3.8 USD from Litecoin, in total 8 USD per day).

[dmwardjr]

....
I'm curious...  "Income / day" calculations...  Was that BTC only or BTC and LTC combined?

Both combined. As SFARD announcement in 1st page...

Okay, thanks!  Just making sure.

I suppose a large farm with $0.04 per kWH or less in power costs may consider jumping on it.

However, bare in mind, the price does not include shipping.

[alh]

I don't keep up, but isn't the next LTC "Halving" way sooner than 180 days?

[dmwardjr]

I don't keep up, but isn't the next LTC "Halving" way sooner than 180 days?

http://www.litecoinblockhalf.com

A little less than 60 days at this present post.

[dmwardjr]

Numbers:
Income per day: 8$
Power consumption @wall (what efficiency PSU?): 960W
Power consumption /24h: 23kWh
Cost per kWh (1st calc): 0.08$/kWh
Cost per kWh (2nd calc): 0.1$/kWh
1 day cost (1st calc): 1.84$
1 day cost (2nd calc): 2.3$
Income /day (1st calc): 6.16$
Income /day (2nd calc): 5.7$
Price: 1129$
ROI (1st calc): ~183 days
ROI (2nd calc): ~198 days

All calculations without difficulty (and price ofc) increase taken into consideration....

This pricing puts this pretty much in line with Bitmain's pricing.  Fairly close anyway.  This is assuming it actually mines at the hash rate advertised.

[alh]

So we should expect a "big yawn" from the Bitmain marketing guys? No pressure to announce/release an S6/S7 product?

[dmwardjr]

It's my understanding they are getting chips from Spondooliestech.  So, when SPT's chips are in new rigs mining [As they are now], we may see them begin development very soon

Ok, while more recent than before, it just clouds the issue further.

What chips does Spondoolies have that are newer than the Rockerbox (SP20), and where are they mining with them? What's your source for this?

https://bitcoinmagazine.com/20191/bitcoin-shop-btcs-merge-spondoolies-tech-create-publicly-traded-bitcoin-mining-company/

After reading that link I posted, I see nothing in it about next generation rigs by SPT online yet.  Sorry about that.  I can't remember where I saw that.  I may have read it wrong the first time.  I could have swore I saw some were online now and more is in the process of being made to go online.

[dmwardjr]

So we should expect a "big yawn" from the Bitmain marketing guys? No pressure to announce/release an S6/S7 product?

Yes, the yawn is contagious.   yaaaawwwwwn

[rogelio11]

Lee from our hosting group got a price (Lee's hosting group)

get one price of 7000CNY(1129$), but we need wait until the middle of the august before we can get the miner....
so what are your guys thinking about this offer

Looks like I won't be buying one ! :HELL

yep I'm out..

makes no sense..you can get used spondoolies sp20's on ebay at 1.7TH for less then 500 bucks
you can get a 50mh scrypt miner for probably 200 bucks...sure the electric cost is high but they are in hand
in 2 days and with the halving coming up for scrypt ..

those nice bad guys. i might get one in case.  or a used alcheminer 256 Mh/s for $599 from alcheminer's website. only if you got enough cash for shippng, customs, etc. though.
sorry for being off topic. im curious on how Sfards will turn out with their mining performance.

[dmwardjr]

At $0.04 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.038400
Cost Per Day:   $0.921600
Cost Per Week:   $6.451
Cost Per Month:   $25.80
Cost Per Year:   $335.46

At $0.05 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.048000
Cost Per Day:   $1.152000
Cost Per Week:   $8.064
Cost Per Month:   $32.26
Cost Per Year:   $419.33

At $0.06 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.057600
Cost Per Day:   $1.382400
Cost Per Week:   $9.677
Cost Per Month:   $38.71
Cost Per Year:   $503.19

At $0.07 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.067200
Cost Per Day:   $1.612800
Cost Per Week:   $11.290
Cost Per Month:   $45.16
Cost Per Year:   $587.06

At $0.08 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.076800
Cost Per Day:   $1.843200
Cost Per Week:   $12.902
Cost Per Month:   $51.61
Cost Per Year:   $670.92

At $0.09 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.086400
Cost Per Day:   $2.073600
Cost Per Week:   $14.515
Cost Per Month:   $58.06
Cost Per Year:   $754.79

At $0.10 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.096000
Cost Per Day:   $2.304000
Cost Per Week:   $16.128
Cost Per Month:   $64.51
Cost Per Year:   $838.66

At $0.11 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.105600
Cost Per Day:   $2.534400
Cost Per Week:   $17.741
Cost Per Month:   $70.96
Cost Per Year:   $922.52

At $0.12 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.115200
Cost Per Day:   $2.764800
Cost Per Week:   $19.354
Cost Per Month:   $77.41
Cost Per Year:   $1,006.39

At $0.13 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.124800
Cost Per Day:   $2.995200
Cost Per Week:   $20.966
Cost Per Month:   $83.87
Cost Per Year:   $1,090.25

At $0.14 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.134400
Cost Per Day:   $3.225600
Cost Per Week:   $22.579
Cost Per Month:   $90.32
Cost Per Year:   $1,174.12

At $0.15 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.144000
Cost Per Day:   $3.456000
Cost Per Week:   $24.192
Cost Per Month:   $96.77
Cost Per Year:   $1,257.98

At $0.16 per kWH for 960 watts at the wall:


Cost Per Hour:   $0.153600
Cost Per Day:   $3.686400
Cost Per Week:   $25.805
Cost Per Month:   $103.22
Cost Per Year:   $1,341.85

At $0.17 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.163200
Cost Per Day:   $3.916800
Cost Per Week:   $27.418
Cost Per Month:   $109.67
Cost Per Year:   $1,425.72


At $0.18 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.172800
Cost Per Day:   $4.147200
Cost Per Week:   $29.030
Cost Per Month:   $116.12
Cost Per Year:   $1,509.58


At $0.19 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.182400
Cost Per Day:   $4.377600
Cost Per Week:   $30.643
Cost Per Month:   $122.57
Cost Per Year:   $1,593.45


At $0.20 per kWH for 960 watts at the wall:

Cost Per Hour:   $0.192000
Cost Per Day:   $4.608000
Cost Per Week:   $32.256
Cost Per Month:   $129.02
Cost Per Year:   $1,677.31



Bitcoin single mining mode: Hashing power 1700 GHS, power consumption 770W.




Litecoin single mining mode: Hashing power 47 MHS, power consumption 180W.





BTC @ $243.577 = $4.191 per day with 1700 GH/s

LTC @ $02.86844 = $3.418 per day with 47 MH/s

Total Combined = $7.609 per day

Rig price @ $1,129.00

All of the following ROI's assume:

1) the difficulty remains the same
2) the price of bitcoin remains the same @ $243.577
3) the price of litecoin remains the same $02.86844
4) your pool is constantly at 100% luck for the day (BIG IF).

Also keep in mind the following ROI's may or may not include additional cost of shipping:

@ $0.04 per kWH per day:  $7.609 - $0.9216 = 6.6874 per day / or in 168.825 days

@ $0.05 per kWH per day:  $7.609 - $1.152 = $6.457 per day / ROI in 174.849 days

@ $0.06 per kWH per day:  $7.609 - $1.3824 = $6.2266 per day / ROI in 181.319 days

@ $0.07 per kWH per day:  $7.609 - $1.6128 = $5.9962 per day / ROI in 188.286 days

@ $0.08 per kWH per day:  $7.609 - $1.8432 = $5.7658 per day / ROI in 195.810 days

@ $0.09 per kWH per day:  $7.609 - $2.0736 = $5.5354 per day / ROI in 203.960 days

@ $0.10 per kWH per day:  $7.609 - $2.304 = $5.305 per day / ROI in 212.818 days

@ $0.11 per kWH per day:  $7.609 - $2.5344 = $5.0746 per day / ROI in 222.481 days

@ $0.12 per kWH per day:  $7.609 - $2.7648 = $4.8442 per day / ROI in 233.062 days

@ $0.13 per kWH per day:  $7.609 - $2.9952 = $4.6138 per day / ROI in 244.701 days

@ $0.14 per kWH per day:  $7.609 - $3.2256 = $4.3834 per day / ROI in 257.563 days

@ $0.15 per kWH per day:  $7.609 - $3.456 = $4.153 per day / ROI in 271.852 days

@ $0.16 per kWH per day:  $7.609 - $3.6864 = $3.9226 per day / ROI in 287.819 days

@ $0.17 per kWH per day:  $7.609 - $3.9168 = $3.6922 per day / ROI in 305.780 days

@ $0.18 per kWH per day:  $7.609 - $4.1472 = $3.4618 per day / ROI in 326.131 days

@ $0.19 per kWH per day:  $7.609 - $4.3776 = $3.2314 per day / ROI in 349.384 days

@ $0.20 per kWH per day:  $7.609 - $4.608 = $3.001 per day / ROI in 376.208 days

[pekatete]

Has anyone actually confirmed that the price raising temperatures here is correct? If so, does it apply to the 100 unit "bulk orders" or to single units? Also, does that include shipping?

[dmwardjr]

Has anyone actually confirmed that the price raising temperatures here is correct? If so, does it apply to the 100 unit "bulk orders" or to single units? Also, does that include shipping?

No one has confirmed that.  So, I'm deleting some of my previous posts until I know for sure.  I don't want to jump the gun. 

[Dexter770221]

....
 if there was some way to make a modular miner and just buy chips that would be the best solution I think.

Working on it....

[dmwardjr]

....
 if there was some way to make a modular miner and just buy chips that would be the best solution I think.

Working on it....

sweeeeeet

[Dexter770221]

....
 if there was some way to make a modular miner and just buy chips that would be the best solution I think.

Working on it....

sweeeeeet

Only if ASIC's manufacturers will want to sell their precious ASIC's @ reasonable costs. Not 10x manufacture costs...

[dmwardjr]

....
 if there was some way to make a modular miner and just buy chips that would be the best solution I think.

Working on it....

sweeeeeet

Only if ASIC's manufacturers will want to sell their precious ASIC's @ reasonable costs. Not 10x manufacture costs...

Understandable...

[Dexter770221]

....
 if there was some way to make a modular miner and just buy chips that would be the best solution I think.

Working on it....

sweeeeeet

Only if ASIC's manufacturers will want to sell their precious ASIC's @ reasonable costs. Not 10x manufacture costs...

Understandable...

Not for everyone. I think that with my design and 20$/SFARD_chip this miner could cost 849$ (fast calculations). With easy (== cheap) upgrade in future,only one PCB to replace with screwdriver....