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Author Topic: GekkoScience is now dabbling with 16nm ASICs for new designs  (Read 71462 times)
HagssFIN
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November 15, 2016, 06:15:33 PM
 #141

I kind of supported you and bought one of these GekkoScience PSU kits in bitshopper.de that you told me about  Smiley
https://www.bitshopper.de/shop/zubehoer/hp-dps-1200fb-psu/

This is good for guys in EU area.

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November 15, 2016, 06:24:44 PM
 #142

I'd be up for a double chip existing compac. Be great to have a limited edition run. Put my name down for one please.

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what is this "brake pedal" you speak of?


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November 15, 2016, 06:51:22 PM
 #143

two chip usb powered compac? im in for one.
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November 15, 2016, 06:53:33 PM
 #144

I will buy a few 2 or 4 chip compacs. I'm still running the original compacs.

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November 15, 2016, 07:05:54 PM
 #145

Fucking Bitfury seriously get your shit together and stop lying about serving the community of BTC and share your chip.

Centralization really sucks

That would be all

We need to make it worth their time. Let's crowdfund $1M  Roll Eyes
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November 15, 2016, 10:25:50 PM
 #146

I would be in for up to four of them as well. 
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November 15, 2016, 10:46:47 PM
 #147

On that note, I'm starting to lay out a two-BM1384 Compac. It should have the same overall dimensions as the existing Compac. The heatsink is the same size, so super-high-end overclocking won't be as safe without modding, but that's okay. You should get a lot more hashrate out of it than the old Compac at any given power level.

To make a batch worthwhile will probably require at least 100, preferably 250 or more.

Not sure on price yet, wait until I get the layout done and see whatall parts will be needed.

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November 15, 2016, 11:11:57 PM
 #148

On that note, I'm starting to lay out a two-BM1384 Compac. It should have the same overall dimensions as the existing Compac. The heatsink is the same size, so super-high-end overclocking won't be as safe without modding, but that's okay. You should get a lot more hashrate out of it than the old Compac at any given power level.

To make a batch worthwhile will probably require at least 100, preferably 250 or more.

Not sure on price yet, wait until I get the layout done and see whatall parts will be needed.

Don't get miffled, but what would be the name?
Twopac or 2pac?  Grin
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November 15, 2016, 11:15:36 PM
 #149

Hadn't really thought about it. I guess Compac SE is pretty boring compared to 2pac.

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November 15, 2016, 11:33:57 PM
 #150

I would probably buy a few 2pacs. If you do end up making one, what target GH/s are you aiming for?

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November 15, 2016, 11:53:52 PM
 #151

I'm not sure that question has an answer. The original Compac didn't have a "target" hashrate, that's the whole point of making it with adjustable voltage and frequency. Set it where you want it.

I can say that for the ~10W it took the one-chip to generate 20GH, this one should get closer to 30. The 5W hashrate, instead of around 13GH, should be more like 18.

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November 16, 2016, 12:35:09 AM
 #152

I'm not sure that question has an answer. The original Compac didn't have a "target" hashrate, that's the whole point of making it with adjustable voltage and frequency. Set it where you want it.

I can say that for the ~10W it took the one-chip to generate 20GH, this one should get closer to 30. The 5W hashrate, instead of around 13GH, should be more like 18.
Well damn you... Wink That lil' Compac I bought from Phil works great. So far, with a very tiny fan wafting on it I'm running 300MHz, still almost cool to touch. Using Bfgminer is painless to run (driver built in) vs CGminer + Zadig.

Brings back memories of the 2 lil 10GHs BFL Cube miners I started with in Feb 2014. Bought them through TigerDirect and the damn things got me hooked within a month. Again, with them CGminer was -- confusing -- but Bfgminer found them right away. Now that BFGminer is running anyway at work for the Compac might as well have 1 cube join my lotto instance on solo.ckpool.org Cheesy

And... speaking of those BFL cubes: They draw 60w each for 10GHs vs what the Compac gen-1 provide. So, maybe the 4-chip version in a similar form factor? Already uses the barrel plug so that's perfect.

Anywho, love the stick I got so count me in for at least 1 of the Gen-2 2x chip sticks.
Finally -- BFGminer already supports Avalon (not sure about A721) and BitFury chips up to at least their last 28nm ones. Is BFG also plug-n-play with your samples?

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November 16, 2016, 12:58:01 AM
 #153

I was thinking of just finding one of those cheap 4x4cm heatsinks with a built-in fan and tucking four chips underneath it. Probably just in case, put a temp sensor under there that kicks off the power if it reaches a factory-preset threshold. The whole thing would be fairly small, maybe 8x8cm to have room for power and node-level stuff. If anyone wants it, anyways.

I'm waiting to hear back from the codemaster about how hard it'd be to extend the Compac driver to handle multiple chips. I don't think it should take much, but then I don't have any data to back that up.

Heck if I know what BFG supports. Never really used it. And whether or not it's compatible with current BF will depend on how you interface to the chips - they don't exactly use a standard protocol. How does BFG talk to the 28nm, and how do you know that because I've never seen any of their 28nm in the wild?

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November 16, 2016, 01:13:21 AM
 #154

I was thinking of just finding one of those cheap 4x4cm heatsinks with a built-in fan and tucking four chips underneath it. Probably just in case, put a temp sensor under there that kicks off the power if it reaches a factory-preset threshold. The whole thing would be fairly small, maybe 8x8cm to have room for power and node-level stuff. If anyone wants it, anyways.

I'm waiting to hear back from the codemaster about how hard it'd be to extend the Compac driver to handle multiple chips. I don't think it should take much, but then I don't have any data to back that up.

Heck if I know what BFG supports. Never really used it. And whether or not it's compatible with current BF will depend on how you interface to the chips - they don't exactly use a standard protocol. How does BFG talk to the 28nm, and how do you know that because I've never seen any of their 28nm in the wild?
I guess for a start, ask Luke Jr. directly.From reading his thread he seems more approachable than CK- is... Avalon and BitFury chips along with a slew of others are listed as having build-in code. The compac code uses same base as the Bitmain code per the docs. Start here for the list  https://bitcointalk.org/index.php?topic=877081.0 - it's as long as yer arm...

edit: I'll take a few pics of a BFL Cube inc the innards tomorrow. Is about 3" per-side. Very nice little package. Then nvm. Still gonna fire one up again to join the lotto address.

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November 16, 2016, 01:19:03 AM
 #155

I've got some BFL cubes. Don't really care.

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November 16, 2016, 01:24:13 AM
 #156

ack.
Ask Luke Jr. about existing support would be best

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November 16, 2016, 01:26:03 AM
 #157

Sorry to be terse, but this is just another incredibly busy day in a week of probably minimum 12-hour days. Those BFL giblets are a lot fancier than I care to make for a short-batch fundraiser.

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November 16, 2016, 01:34:11 AM
 #158

Sorry to be terse, but this is just another incredibly busy day in a week of probably minimum 12-hour days. Those BFL giblets are a lot fancier than I care to make for a short-batch fundraiser.
I was thinking more along the lines of it sans cover. Is just a thick aluminum baseplate, circuit board and topsink/fan on top. Should fit a 4-chip board nicely. Pop one open a take a peek.

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November 16, 2016, 01:37:02 AM
 #159

So you want me to design the board to fit that form-factor? Or just that the general design is a good idea? Because I don't really feel like designing for an existing form-factor, or I'd probably pick something like the U3 instead.

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November 16, 2016, 01:42:55 AM
 #160

So you want me to design the board to fit that form-factor? Or just that the general design is a good idea? Because I don't really feel like designing for an existing form-factor, or I'd probably pick something like the U3 instead.
Just as a suggestion for general design direction, certainly not specific. Really mostly depends on how reuseable you want the PCB layouts to be and you try to design around that with future designs in-mind

Only other suggestion is just a bare open format so the DIY'rs can have fun making Lexan cases or dunk them in a fish tank full of oil to highlight the pretty flashing lights (meaning dpot to set vcore vs a real pot) Smiley

-Joshua Zipkin aka Joshua Alexander leaked AMT A1 miner skype chats http://bit.ly/1Qjt6lj
-For bitcoin to succeed the community must police itself.
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