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Topic: [ANN] Sfards:SF100, the first 28nm Dual-Mode Miner is accepting pre-order now - page 52. (Read 129910 times)

hero member
Activity: 686
Merit: 500
FUN > ROI
How large are the chips

How big is the chip?

The chip silicon and substrate sizes are in the datasheet [...].  SF3301 substrate is 19x19mm. [...]
It should be the same size as Spondoolies-Tech's RockerBox [...]. 
( A bunch of this data is in the wiki )
hero member
Activity: 840
Merit: 1000
thanks.  so this board has 2 chips .


  so 300gh max for sha 256

and 6mhs for scrypt


I rounded.  @j4bberwock  will you

This one is a dev board, so the chips may be stressed a little bit to see the lower and upper limits.
It's been designed to allow over 200A for both SHA and scrypt and to work with one or two chips.

For commercial product, I'd say that SHA should be limited around 100GH per chip to have a good stock efficiency and still some potential for over/underclock by tweaking voltage.
Scrypt can be used to the max allowed by the chips since the efficiency is really good.
legendary
Activity: 4382
Merit: 9330
'The right to privacy matters'
thanks.  so this board has 2 chips .


  so 300gh max for sha 256

and 6mhs for scrypt


I rounded.  @j4bberwock  will you
legendary
Activity: 1628
Merit: 1012
And here is finally the board (to be populated for now).



Next to its homemade stencil.




looking forward to this.  so 2 chips will do

? 256 sha

? scrypt  

? watts

thread is long I am lazy and don't want to read it all again.  

Ballpark numbers

are 300gh  sha 256 ?

and  2gh scrypt ?



See below.

Update 14/4/15:

Thank you all for waiting so patiently, today we'd like to announce some long awaited specifications for the SF3301!



The SF3301 fully utilizes the advantages of the FD-SOI technology. With increased forward body bias the chip is operational at lower voltages while maintaining a higher frequency. The chip boasts impressive power efficiency while affording high hash power, allowing for much lower wastage per hash. The ASIC’s lowest working voltage is 0.45V, with lowest BTC efficiency at 0.19J/GH, and lowest LTC efficiency at 1.75J/MH. In current market conditions compared to other mining technology, dual-algorithm capabilities can provide a clear advantage.

After strenuous testing of the SF3301, we reached hashrates of 152GH/s for SHA-256 and 3.17MH/s for Scrypt.

This month we will also be releasing a number of documents for the SF3301 as open source including the ASIC Development Board designs.

Next month we will release some design specifications for our debut miner.

Additionally in the near future SFARDS will be selling ASIC development boards and sample chips, making the SF3301 accessible to developers who wish to customize and build their own hardware. SFARDS welcomes any and all developers and communities to build upon our technology and contribute to the mining ecosystem.

Please contact [email protected] for more information.
legendary
Activity: 4382
Merit: 9330
'The right to privacy matters'
And here is finally the board (to be populated for now).



Next to its homemade stencil.




looking forward to this.  so 2 chips will do

? 256 sha

? scrypt  

? watts

thread is long I am lazy and don't want to read it all again.  

Ballpark numbers

are 300gh  sha 256 ?

and  2gh scrypt ?

newbie
Activity: 1
Merit: 0
hero member
Activity: 518
Merit: 500
And here is finally the board (to be populated for now).

https://i.imgur.com/sSU4W5Ml.jpg?1

Next to its homemade stencil.

https://i.imgur.com/3s9coEnl.jpg?1

Get in there! Were those cheaper than OSH?
hero member
Activity: 882
Merit: 500
Where am I?
And here is finally the board (to be populated for now).

*Saving Space*

Next to its homemade stencil.

*Saving Space*


Very nice!!! Its white!!!

Still just a dev board but glad to see how quick you are able to get some boards made.

hero member
Activity: 840
Merit: 1000
And here is finally the board (to be populated for now).



Next to its homemade stencil.


legendary
Activity: 1049
Merit: 1001
Still waiting on more information on the commercially available miner. It's been quite some time already.

Yeah you'd think they'd be rushing to the market with this. Too bad really with LTC jumping in price but the good news is my Innosilicon is making money again.
They might be taking their time with the whole testing and burnout phase while they fill their coffers with litecoin.

Is anyone using them, do we have proof they work?
hero member
Activity: 868
Merit: 1000
Still waiting on more information on the commercially available miner. It's been quite some time already.

Yeah you'd think they'd be rushing to the market with this. Too bad really with LTC jumping in price but the good news is my Innosilicon is making money again.
legendary
Activity: 1050
Merit: 1000
Still waiting on more information on the commercially available miner. It's been quite some time already.
hero member
Activity: 840
Merit: 1000
DHL was fast.


Very nice, are you using them to make a lava lamp?

Not yet, but 2 chips @25w each should work.
Here is my "dev board" finally routed. Let's hope it'll work.



My dropbox folder with the work in progress schematics is updated.



J4bberwock you are awesome! I love all your work man! I hope to see you one day an paid you a big beer for all the work you do for bitcoin!  Grin
Keep the good work!
You can always send him a beer over the blockchain  Wink that's, what makes bitcoin great.

That would be appreciated, but don't forget that it's "just" some kind of custom dev board with 2 chips.

More serious things are on their way and will be teased once the dev board gives me a few results for voltage/efficiency settings.
Probably nothing until next week since I'm currently almost full time busy with family, and it seems the PCBs won't be delivered before thursday.

Parts price so far:
chips: 400$ +32$ shipping +80$ taxes
PCBs: 50$ each (100mmx150mm, 4 layers, 2oz copper, immersion gold)

BOM will be uploaded once the design is tested and working.
legendary
Activity: 2030
Merit: 1076
A humble Siberian miner

Looks pretty clean, make them white.  So tired of seeing the boring green boards.

Black with gold should look OK too.  Smiley
legendary
Activity: 1484
Merit: 1004
DHL was fast.


Very nice, are you using them to make a lava lamp?

Not yet, but 2 chips @25w each should work.
Here is my "dev board" finally routed. Let's hope it'll work.



My dropbox folder with the work in progress schematics is updated.



J4bberwock you are awesome! I love all your work man! I hope to see you one day an paid you a big beer for all the work you do for bitcoin!  Grin
Keep the good work!
hero member
Activity: 686
Merit: 500
FUN > ROI
How big is the chip? looks pretty big compared to most SHA/scrypt chips.

The chip silicon and substrate sizes are in the datasheet [...].  SF3301 substrate is 19x19mm.  Minion is 25x25mm - a fair bit larger, while KnC's public offerings were a massive 55x55mm.
It should be the same size as Spondoolies-Tech's RockerBox [...]. 
( A bunch of this data is in the wiki )
legendary
Activity: 2188
Merit: 1401
DHL was fast.





Nice! keep us updated when you have the chip working...did they provide the firmware for it?

How big is the chip? looks pretty big compared to most SHA/scrypt chips.
hero member
Activity: 686
Merit: 500
FUN > ROI
I'll bet that any color PCB costs more over the common Green one, if it's even available from his favorite fab house.
Generally correct.  Besides, white and black solder mask are fairly opaque.  Green and yellow tend to be nice and translucent.  Slight bit easier to troubleshoot before committing to a final design.



Here is my "dev board" finally routed. Let's hope it'll work.
Good luck Smiley
alh
legendary
Activity: 1850
Merit: 1055
I'll bet that any color PCB costs more over the common Green one, if it's even available from his favorite fab house.
hero member
Activity: 882
Merit: 500
Where am I?
DHL was fast.


Very nice, are you using them to make a lava lamp?

Not yet, but 2 chips @25w each should work.
Here is my "dev board" finally routed. Let's hope it'll work.



My dropbox folder with the work in progress schematics is updated.



Looks pretty clean, make them white.  So tired of seeing the boring green boards.
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