Ytterbium
|
 |
September 04, 2013, 12:06:38 AM |
|
You left heat dissipation out of all your math. Most of these designs will require cooling solutions that are much more expensive than the price of the chip itself. ActM's chips at <15W will only require something like this per chip:  That's nice. Of course, Bitfury chips don't require any cooling at all. If Labcoin chips need individual cooling they can also use a shared heatsink like the ones used in Avalon systems. They'll be the same design with the heat pad on the bottom.
|
|
|
|
crumbs
|
 |
September 04, 2013, 12:20:17 AM |
|
... You left heat dissipation out of all your math. Most of these designs will require cooling solutions that are much more expensive than the price of the chip itself.
ActM's chips at <15W will only require something like this per chip: [img ]http://heatsink[/img]
You left out a more important part: ActM chip doesn't exist, and thus requires no cooling solutions. We don't even know if it's in the design stages, much less the actual J/H the thing burns.
|
|
|
|
Stuartuk
|
 |
September 04, 2013, 12:22:59 AM Last edit: September 04, 2013, 01:12:53 AM by Stuartuk |
|
We don't even know if it's in the design stages, much less the actual J/H the thing burns.
We don't know if your brain exists - there is more evidence suggesting the ACtM ASIC chip exists.
|
|
|
|
crumbs
|
 |
September 04, 2013, 12:37:57 AM |
|
We don't even know if it's in the design stages, much less the actual J/H the thing burns.
We don't know if your brain exists - there is more evidence suggesting the ACtM ASCI chip exists. What's an ASCI, sweet potato, and what makes you think that it exists? (you have 15 minutes to think, don't rush. GO!!!1)
|
|
|
|
Vbs
|
 |
September 04, 2013, 12:53:37 AM Last edit: September 04, 2013, 01:09:16 AM by Vbs |
|
You left heat dissipation out of all your math. Most of these designs will require cooling solutions that are much more expensive than the price of the chip itself. ActM's chips at <15W will only require something like this per chip:  That's nice. Of course, Bitfury chips don't require any cooling at all. If Labcoin chips need individual cooling they can also use a shared heatsink like the ones used in Avalon systems. They'll be the same design with the heat pad on the bottom. Bitfury chips require cooling to operate at acceptable levels, you can check their thread for info on that, for example, https://bitcointalk.org/index.php?topic=228677.msg2974755#msg2974755 and https://bitcointalk.org/index.php?topic=228677.660 or https://bitcointalk.org/index.php?topic=228677.msg3067513#msg3067513Labcoin chips have very different heat dissipation requirements than Avalon chips. Avalon chips at 300MH/s would dissipate 1.98W in a 7x7mm area, i.e., 1.98/(7*7) = 0.0404 W/mm^2, while Labcoin chips need 12.8/(6.5*6.5) = 0.3030 W/mm^2. This means that a Labcoin chip needs a cooling solution that is 7.5x more efficient in removing heat than one for an Avalon chip.
|
|
|
|
Stuartuk
|
 |
September 04, 2013, 01:14:18 AM |
|
What's an ASIC, sweet potato, and what makes you think that it exists? (you have 15 minutes to think, don't rush. GO!!!1)
FTFY - lolz
|
|
|
|
Stuartuk
|
 |
September 04, 2013, 01:16:42 AM |
|
This means that a Labcoin chip needs a cooling solution that is 7.5x more efficient in removing heat than one for an Avalon chip.
Silence all round from the LabCoin fanboys. A deathly silence. You can imagine the cold sweat running down their backs reading that. Another slam-dunk from the mighty Vbs.
|
|
|
|
Ytterbium
|
 |
September 04, 2013, 01:19:13 AM |
|
You left heat dissipation out of all your math. Most of these designs will require cooling solutions that are much more expensive than the price of the chip itself. ActM's chips at <15W will only require something like this per chip:  That's nice. Of course, Bitfury chips don't require any cooling at all. If Labcoin chips need individual cooling they can also use a shared heatsink like the ones used in Avalon systems. They'll be the same design with the heat pad on the bottom. Bitfury chips require cooling to operate at acceptable levels, you can check their thread for info on that, for example, https://bitcointalk.org/index.php?topic=228677.msg2974755#msg2974755 and https://bitcointalk.org/index.php?topic=228677.660Labcoin chips have very different heat dissipation requirements than Avalon chips. Avalon chips at 300MH/s would dissipate 1.98W in a 7x7mm area, 1.98/(7*7) = 0.0404 W/mm^2, while Labcoin chips need 12.8/(6.5*6.5) = 0.3030 W/mm^2. This means that a Labcoin chip needs a cooling solution that is 7.5x more efficient in removing heat than one for an Avalon chip. Their claim was 12.8W at 4.8GH/s/chip. At just 2Gh/s/chip it should be (less then) half of that. We'll see what kind of cooling solution they come up with. Seems rather implausible to me that a team that could design a working ASIC would somehow just forget about cooling. If they have their own CNC machine they can cut their own heatsinks.
|
|
|
|
navitatl
Member

Offline
Activity: 119
Merit: 10
|
 |
September 04, 2013, 01:20:43 AM |
|
VBS coming out with the hard facts as always, love it. Can you estimate the W/mm^2 for the eAsic chips, or do we lack enough specs to calculate it?
|
|
|
|
Stuartuk
|
 |
September 04, 2013, 01:40:02 AM |
|
If they have their own CNC machine they can cut their own heatsinks.
LMFAO  ''Yeah that's right, put a notch over on that side too Bill, I reckon with a few more notches we can get like 7 times more heat outta this thing easy''
|
|
|
|
Ytterbium
|
 |
September 04, 2013, 01:54:46 AM |
|
VBS coming out with the hard facts as always, love it. Can you estimate the W/mm^2 for the eAsic chips, or do we lack enough specs to calculate it? Obviously not. NDA, remember? Although likely their dies will be huge because of their FPGA->ASIC process, so the W/mm 2 should be pretty low. The problem, of course, is that the $/chip will be pretty high.
|
|
|
|
Stuartuk
|
 |
September 04, 2013, 02:21:21 AM |
|
But 28 nm makes everything right!!!!!
Almost - more specifically easic 28 nm makes everything right. With the volume they can pump them out for us, we can wipe the board.
|
|
|
|
Stuartuk
|
 |
September 04, 2013, 02:30:45 AM |
|
You can't even wipe your own ass.
And he side-steps the volume question with an ass joke. Bravo!
|
|
|
|
Mabsark
Legendary
Offline
Activity: 826
Merit: 1004
|
 |
September 04, 2013, 02:35:05 AM |
|
But 28 nm makes everything right!!!!!
'Cause I'm gonna be your miner tonight Two months from now That's what you'll be sayin' As you join ActM fanboys kneelin' and prayin' Oh boy, when you mine with me Oh boy, the world can see That you, should've bought, LC
|
|
|
|
Ytterbium
|
 |
September 04, 2013, 02:41:17 AM |
|
But 28 nm makes everything right!!!!!
Almost - more specifically easic 28 nm makes everything right. With the volume they can pump them out for us, we can wipe the board. eAsic doesn't make the chips, dumbass. They just make data files that are sent to the fab. They have nothing to do with "volume"
|
|
|
|
Rawted
|
 |
September 04, 2013, 03:03:59 AM |
|
But 28 nm makes everything right!!!!!
Almost - more specifically easic 28 nm makes everything right. With the volume they can pump them out for us, we can wipe the board. eAsic doesn't make the chips, dumbass. They just make data files that are sent to the fab. They have nothing to do with "volume" I swear this stuartUK kid has to be trolling. I've never seen someone post in such a vile, immature way, all the while touting his own ability to predict/speculate/know it all. His account is barely older than Actm (which I'm pretty sure was his first investment in the btc world). His posts have got to be a joke.
|
|
|
|
snowdropfore
|
 |
September 04, 2013, 03:04:57 AM |
|
there are more and more cheap shares on BF,i pick up some。still hold on the actm。
|
|
|
|
Ytterbium
|
 |
September 04, 2013, 03:05:58 AM |
|
I swear this stuartUK kid has to be trolling. I've never seen someone post in such a vile, immature way, all the while touting his own ability to predict/speculate/know it all. His account is barely older than Actm (which 'm pretty sure was his first investment in the btc world). His posts have got to be a joke.
Check out his posts in the Labcoin thread if you haven't already.
|
|
|
|
Rawted
|
 |
September 04, 2013, 03:08:50 AM |
|
I swear this stuartUK kid has to be trolling. I've never seen someone post in such a vile, immature way, all the while touting his own ability to predict/speculate/know it all. His account is barely older than Actm (which 'm pretty sure was his first investment in the btc world). His posts have got to be a joke.
Check out his posts in the Labcoin thread if you haven't already. I'm sure it's entertaining, i only catch the sporadic idiocy he posts here when i visit the thread biweekly.
|
|
|
|
carpetbagger
Sr. Member
  
Offline
Activity: 258
Merit: 250
You can trust me, I have an avatar
|
 |
September 04, 2013, 05:13:32 AM |
|
It's not a situ that can continue any longer IMHO (because he needs some press coverage as well as long term shareholders being unhappy about lack of information) and we've made that clear. Ken is not the best at handling the public side of things as we all know and tends to focus on his engineering.
It's a holiday in the US Monday but tues onwards we'll continue to push him daily to ensure he is chasing it up as his highest priority. We want to see this put to bed within the next week or so but it's not down to us.
Any progress yet?
|
♔ Keep clam & hodl on
|
|
|
|