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Author Topic: Avalon chip  (Read 8294 times)
ngzhang
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February 05, 2013, 04:21:34 PM
 #21

@DeathAndTaxes
here is no personal offence, but your deduce in this thread are totally in-correct.

Well tell me where I am wrong. Smiley

maybe one or two years later.



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February 05, 2013, 05:31:41 PM
 #22

I agree as well, I have been doing some calculations on difficulty and I have a calendar with estimates to see if it is staying on the curve I believe we are heading on.   The next month will be crucial to give us the pace for the next 6 months.  

The shape of the curve depends on how aggressive both companies can be in moving units.  For Avalon how quickly will all batch 2 customers get their units, will there be a delay on batch3, etc.  For BFL can they get out the door in Feb and once they do how many units per week can they sustain in production.  The end state is much higher difficulty it really just depends on how steep the curve is.  

Precisely. The way I've been looking at it, the absolutely minimum for first gen will probably be around 250-300TH/s (tripling BFL's preorder count, adding Avalon's batch #1 and #2, and tossing in ASICMiner as well). It'll only go up from there once people see working devices, as well as Gen 2 speculation.

My old estimate was based on dollars per hash/second.  ASICs provide roughly 25-35 times the hashrate per dollar cost, ignoring operational costs.  Thus, my short-medium term projection was about 75 million difficulty.  As the fixed costs of ASIC production dwindle and devices start being sold closer to their marginal costs, I expect another doubling, to around 150 million difficulty. *

My current thinking is that those two moves will appear as a single steady rise, rather than two discrete actions.  I would expect we'll be near 75 million by July, and 150 million by October, roughly a 50% increase every month, starting more or less now.

After that, I think a 10% monthly growth rate is fairly reasonable.  The network will be big enough that each new batch coming online will be a smaller fraction of the whole, but the units will also be cheaper.  10% seems like a reasonable balance point.  In my projections, I use an abrupt transition, but I expect a rounder corner in reality.

I'm hoping that my estimates are very aggressive.  If I'm underestimating the difficulty in any given period by very much at all, then the second or third Avalon batch, and other units with similar costs and delivery timelines (which might possibly include BFL) will be at best slightly profitable over the first year.  The biggest winners could very easily be those that got in on the very first batches, and those than come in much later, when the per-unit costs are dominant. **

* Note that I use difficulty in my work, not hash rate.  The exchange rate is roughly 1 Mdiff=7Thash/sec.  My 75 Mdiff short-medium target is roughly double Korbman's minimum 1st gen estimate, or about 525 Thash/sec.  My medium-long target of 150 is roughly 1 Petahash/sec.

** I place an upper bound of $200 on the part cost per module in Avalon, not counting the fixed costs.  This is using very rough estimates for a bunch of things.  Napkin quality work, at best.  I could refine it a bit if I had the board specs (dimensions and layer count) along with the part numbers of the non-ASIC components on the boards, but I probably won't bother.

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February 05, 2013, 05:53:19 PM
 #23

Precisely. The way I've been looking at it, the absolutely minimum for first gen will probably be around 250-300TH/s (tripling BFL's preorder count, adding Avalon's batch #1 and #2, and tossing in ASICMiner as well). It'll only go up from there once people see working devices, as well as Gen 2 speculation.

My old estimate was based on dollars per hash/second.  ASICs provide roughly 25-35 times the hashrate per dollar cost, ignoring operational costs.  Thus, my short-medium term projection was about 75 million difficulty.  As the fixed costs of ASIC production dwindle and devices start being sold closer to their marginal costs, I expect another doubling, to around 150 million difficulty.

That's a pretty fair way to estimate it, and I tried thinking about it that way at one point as well..mainly since the majority of miners are in it for the money more so than the security it brings to the network. I found that, at least for GPUs, price and difficulty seemed to correlate to around an 8-10 month payoff...the point in which the $300 GPU (or any price really) finally pays for itself and you can make a return. So long as a miner was able to eventually turn a profit, they continued to mine.

That's also probably part of the reason we're seeing an increase in difficulty now...since the price is above $20, many smaller miners are able to cover energy costs and profit once more.

EDIT: I can't seem to find my stats on this stuff. I'll have to check again when I'm home from work.

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February 05, 2013, 06:43:22 PM
 #24

I'm very suprised by the number of chips on each avalon module: 80 chips !

240 chips per unit, this means they will have to buy a lot of wafers to produce enough chips to be put in the first batch avalon: 240x300= 72000 chips /4000 chips/wafer, 18 wafers at least! I guess 20 in total

And another big cost is R&D, maybe even higher than material, so I guess they are running out of money right now and need some liquidity injecton, otherwise they will not be able to deliver the first batch, not even mention the second batch

But they are not open with their situation, so no one could give them a hand

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February 05, 2013, 06:56:48 PM
 #25

@DeathAndTaxes
here is no personal offence, but your deduce in this thread are totally in-correct.

Well tell me where I am wrong. Smiley

maybe one or two years later.

"The story is enough to write a novel"

<sincere post>

ngzhang, my respect meter went off the chart (positive) when I read the first post, but was reset when I read your followup reply. To quote the mighty Rushbaugh, "Words mean things!"

Later, bud.

~Bruno K~
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February 05, 2013, 06:58:49 PM
 #26

I'm very suprised by the number of chips on each avalon module: 80 chips !

240 chips per unit, this means they will have to buy a lot of wafers to produce enough chips to be put in the first batch avalon: 240x300= 72000 chips /4000 chips/wafer, 18 wafers at least! I guess 20 in total

And another big cost is R&D, maybe even higher than material, so I guess they are running out of money right now and need some liquidity injecton, otherwise they will not be able to deliver the first batch, not even mention the second batch

But they are not open with their situation, so no one could give them a hand

Why would you think they are running out of money?   How much does a wafer run after you have the die made?

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February 05, 2013, 07:14:47 PM
 #27

18 wafers at least! I guess 20 in total
Wafer quantity/diameter is immaterial here. By the standards of semiconductor manufacturing this will be "short run" even if wildly successfull by the Bitcoin standard. The critical parameter was "shortest waiting time" or some variant of it.

This is kind-of mirror image of the Quantum Bigfoot story:

http://en.wikipedia.org/wiki/Quantum_Bigfoot_(hard_drive)

where 5.25" drives were awkwardly mounted in cases designed for 3.5" hard drives using custom brackets. The reason: Quantum had a lot of 5.25" machinery available to manufacture them cheaply and quickly. It is noteworthy that Wikipedia had removed any mention of this because it wasn't properly sourced. Well, it would be hard to find internal Quantum documents on the open Internet.

Semiconductor manufacturing is the same, except the diameter gets always increased with the next generation of machinery.
 

Please comment, critique, criticize or ridicule BIP 2112: https://bitcointalk.org/index.php?topic=54382.0
Long-term mining prognosis: https://bitcointalk.org/index.php?topic=91101.0
DeathAndTaxes
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February 05, 2013, 08:16:53 PM
 #28

Well wafer quantity matters in that fact that it does have a cost.  If the speculation quoted in the OP is correct 4050 Avalon chips would fit on 110nm water which makes the production cost roughly $1 per chip.  320 chips
I'm very suprised by the number of chips on each avalon module: 80 chips !

240 chips per unit, this means they will have to buy a lot of wafers to produce enough chips to be put in the first batch avalon: 240x300= 72000 chips /4000 chips/wafer, 18 wafers at least! I guess 20 in total

And another big cost is R&D, maybe even higher than material, so I guess they are running out of money right now and need some liquidity injecton, otherwise they will not be able to deliver the first batch, not even mention the second batch

But they are not open with their situation, so no one could give them a hand

Why would you think they are running out of money?   How much does a wafer run after you have the die made?

In decent sized volume maybe $5K per wafer or if the specs on chip size are right about ~$1 per chip.  You could round up to $2 per chip to be conservative and include production losses.
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February 05, 2013, 10:51:54 PM
 #29

Well since someone from Avalon is once again replying on the forum I'd like to give you these two links ... read them carefully ...
http://gpl-violations.org/faq/vendor-faq.html
http://gpl-violations.org/faq/sourcecode-faq.html

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February 06, 2013, 01:26:10 AM
 #30

The heat sink is not in contact with the chips?
Discussed already in relation to another chip using the same package:

https://bitcointalk.org/index.php?topic=91173.msg1428670#msg1428670

Please comment, critique, criticize or ridicule BIP 2112: https://bitcointalk.org/index.php?topic=54382.0
Long-term mining prognosis: https://bitcointalk.org/index.php?topic=91101.0
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February 06, 2013, 01:37:47 AM
 #31

I have to admire them for making such a complex machine and even made it working  Grin  Their flexibility is very high, after seeing BFL design plan, I never expect that they will take this route and win the race through another way

I remember Inaba has guessed that they will use more than 64 chips to reach the 60G hash specification, but they managed to put 320 chips in  each unit at maximum Cheesy

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February 06, 2013, 05:21:06 AM
 #32

I would be surprised if the modules were much under $200, at least at this point. For one, in the $80 estimate for chips the cost of sawing and packaging isn't included unless I missed it in the quote. Second, the misc components on the board do add up, especially things like connectors and inductors. Given the simple nature of the chips they might not need anything like a 6 layer board where things get much more expensive, but $10 for the PCB, smaller PCB as well as assembly seems low even for China. Also, the heatsink is not going to be a negligible cost. Again, I'm more used to dealing with companies like Aavid and it might be different locally in China, but those heatsinks are not going to be a couple dollar items.
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