Topic: Official BITMINE CoinCraft series 28nm ASIC miners thread - page 194. (Read 565240 times)

This looks like 8 chips of 25 Ghs making up a 200 Ghs Modul of a coindesk.


I am sure those are 8 chips running at 25 Ghs each (total of 200 Ghs), and not (as you would like) 10 chips running at 20 Ghs (totalling 200 Ghs) that will be able to run in turboboost of 250 Ghs.
So forget this.

You raise some very good points. Makes me eager to see a response to that by giorgiomassa.

Maybe the 25% performance boost you talk about, is what makes the turboboost possible... maybe that IS the turboboost calculation? So the chips normally run somewhat slower (not 100%, but 80%) so to make them live longer?

I am also disappointed by the delays... it really pisses me off that some people have expected shipping dates yet, I ordered really early(mid september a few days after announcement), in fact am #10X in shipping queue and still don't have an estimate for the shipping date for my order.

However, I do believe the hashpower of these machines will EXCEED what we think they will be,

This is because the original hashpower quotes were based off of a nominal speed of 20Gh/s per chip, when in fact the chips run at 25GH/s per chip, that's a 25% increase right off the bat.


See: http://bitmine.ch/?p=2226 Posted on October 15, 2013


This combined with what will be essentially a 60 day delay in shipping means that your say 1 TH/s order should provide 1.25TH(initial) + 0.96 TH/s (bonus 10% * 50 days/10) = 2.21 TH/s in nominal mode

and 40/25 * 2.21 TH/s = 3.536 TH/s in turbo mode... of course they may omit the 25% boost on orders placed after the 15th of October.

But this really depends on the integrity of this company, if they provide less chips than they initially planned in order to rush out orders and don't compound the 10% hashrate increase as is standard then it could be much lower.

If they do that then I will seriously consider taking my business elsewhere for the next generation.

To be perfectly honest, If I was in charge, I'd double all the initial December batch orders just to keep my customers happy rather than make them suffer for delays that shouldn't of happened. It may cut a little bit into their profit margins but that'd only be for the first month of orders and doing something like this would really inspire confidence in them.

Would definitely make a repeat customer out of me.

I eagerly await official commentary on this.

Thanks for the update!

Glad that you are ironing out the bugs - I just want to be able to switch it on and leave it hashing 24x7, no user intervention required.

The supply of chip sales is actually independent from our miners production schedule, we have enough chips to fulfill both of them and in fact the ASICs on sale on our web page are available with January delivery (priced accordingly). If you want smaller quantities, please go through our official small scale distributor Zefir here: https://bitcointalksearch.org/topic/closed-bitmine-coincraft-a1-28nm-chip-distribution-diy-support-294235. Smaller scale sales will be restored in the next days once we get our production lots.

This is looking pretty good.  Great job crunching through those last couple problems.

Once you've caught up on your backlog, are you going to make the chips available for distribution?  There was a lot of interest last November, but everything got put on hold while we waited for information on the chip production schedule.

DOes this account for turbomode too?

Yes, we have already allocated enough resources to increase our production ability by four times by making double shifts and doubling the production lines, we are confident that once the glitches are fixed everything should go ahead very fast.

Many people will want to let the units run in turbo mode to make up for the delay.

But what I hear makes me believe that turbomode (although possible) is a very bad idea if the units are barely stable in normal mode.

All the promises we got seem like pipedreams now.

Thanks for the news & update,

My question is: once the glitches with the PCB design are fixed, will you be able to increase production and catch up with the expected delivery schedule for February and March batches?

Cheers

^^
I want what he´s having.

If shipments are delayed only 2 months old, the devices will not be worth the trouble as a paperweight.
By the way I have noticed an increase in total Hasheo of BTCGUILD, has gone from 3300THs 4000 in 2 days is not normal.

Finally some news.

Yes you are now putting in all the required manpower/hours - good to hear;
yet it very much sounds like exactly that wasn´t done in the beginning of this project.

A classic, huge project management f-up in my books!
3 weeks delay of the chips - 3 weeks delay of shipping due to engineering bugs.

2 more weeks delay as it sounds (best case).

The delays have been a make or break event for several customers.

CPP is a very weak argument - also it definitely does not imply a planned delay like someone mentioned.

great news.....

what is the capacity of production per day

Looking good!! 

Good Luck Bitmine!!! 

Thank you for the update!

Latest updates about the CoinCraft development:

Dear all,

These weeks were even crazier than the past ones. In just 3 weeks we did 3 revisions of the desk's hashing unit in order to achieve the expected performances, you can check the below pictures to see the work that was done on the various revisions. Everybody in the EE industry knows how long it takes to manufacture 4 layers board prototype, have them assembled and do research and measures on each board revision to find issues, we were able to do this only thanks to the efforts of our engineering team that worked overnight and during weekends.

What happened is that we had a condition where the single chips (or a pair of them) were working without problems at the expected performances, but when put on longer chains, performances were not stable for longer times. At a first revision of the board, we identified an issue with the reference clock, the oscillator wasn't powerful enough to drive all the 8 chips' reference clock inputs, so we had to add a clock divider. Plus, we had the need to drive an external reset, so we added that too.

On the second revision on the board, the clock divider was fixed but the next issues popped up with the decoupling of the power supply. Additionally, we removed the resistor dividers for the SPI signals and added level shifters.

On the third board yet another issue appeared due to parasitic interferences created by the high switching currents of the DCDC, this time requiring a more radical re-routing of the board layout. A team of 5 engineers worked on it these last days and we're awaiting the final revision for mid this week, where we don't expect to have additional issues anymore. Assuming that everything will be fine, production will be able to start during next week.

We are really trying to squeeze out every possible minute of delay but some things like the production of a 4 layers board cannot be accelerated that much due to physical constraints.

As soon as there will be more news I'll let you all know.

Thank you for your patience,

Giorgio

has anyone heard some news about bitmine, today ?

Follow along here Zefir is often in contact with them directly so you might want to keep an eye on this thread as well.

https://bitcointalk.org/index.php?topic=294235.200


https://bitcointalksearch.org/topic/m.4554815 Comment on chip deliveries and the patience we may need before we eventually get chips in hand.

I also emailed them a few days back, it took a few days to respond but then they did.

This was there response:

We are a few days later now, i hope to get more news any time now and this time i hope its not another disappointment.
Btw, my order was a "December" batch, so those with orders for February have nothing to worry about (yet).