This isn't 10nm is it?  I thought it was 16nm

Look, if you assume a 10nm chip designed as well as the S9 chips, you should be getting about 20TH @ 1400w. 

If version rolling ASIC boost adds another 20%, you should be seeing ~24th at that power. 

My speculation is that this is a 16nm clone of the S9 but with the ASIC boost counteracting a worse chip design to bring a *very* slight increase in efficiency.

As much as people hate Bitmain, they do seem to have the best chip designs.

The problem I see with the 841 is timing.  If it had come out a year ago, or it had done 18+ TH, it would be awesome.  But it's taken 1.5 years since the S9 for canaan to come out with something that just barely beats it.  

Presumably Bitmain has also been working on something quite a bit better than the S9.  And we all know how they like to crush competitors. 

Have some S9 13.5 TH to sell.  Approximately 100 (stock changes)

I'm willing to ship, and accept escrow, or meet for pickup (southern california - for large orders).

Shipping is $20 for ground, $60 for 2 day, $80 for overnight, per miner.

If you have a good history here I may be willing to accept paypal with confirmed address.  

They are new, unopened.  

$2600 each.  I also have new APW3++ PSU's if you need @ $155 each.  

Separately, I have a farm of 50 S9 13.5 TH hosted that I would be willing to sell in place for $2500 each with PSU.  I can meet you at the hosting location, (west coast US) to conduct the sale in person.  You can either keep them hosted with the current provider or take them with you/ship them.  

If you're looking to buy large amounts of the $100 coupon, I'm selling them at the cheapest price around. 

As you know, 1 per miner, not valid on PSU.

Kano, any thoughts about switching the payout to be from a segwit address?  Theoretically this would reduce the size of the payout by 3/4 leaving room for another ~28KB of transactions in each block right?

ouch... someone just hit a bestshare for the round of 1.24T.  Few hours ago before the diff adjustment this would have been a block

Update: Deal pending. 

This block was over the 988KB limit.  Oh, nm saw the update in post #1.  Get that extra 10kb of fees

Now some pools are starting to have blocks over 1mb due to segwit.  Will this start happening here too as more segwit transactions come through?

Yep, your bank saw it was for something bitcoin related and likely filed a SAR on you and denied the transaction.

This is not even physically possible.

Current S9 is 16nm chips.  The cutting edge phones from Samsung are now shipping with 10nm chips. 

So best case is 40% increase in hash with same power

I'd say 20TH with 1300w.

Do the bitmain-controlled pools do this too?  I imagine this could be more useful for them since combined they control such a large % of hash power.

It looks like not very much went over to bitcoin cash and even more than that amount has been brought online in the last 2 weeks as there is still an expected diff increase of 8.12% in 17 hours.

Bitmain has no problem shipping out thousands of Antminers. 

The answer is order from Bitmain or Canaan (avalon miner).  Bitmain you will have to wait for them to be in stock, then wait a few months for them to arrive, however they are much more efficient.   Avalon will ship much sooner, BUT each machine produces less hash (just over half the S9), so it's more of a pain to setup and uses more power. 

Slight correction, max load would be 208 * 480 * 1.73 (the 1.73 accounts for the fact that the power coming in is 3 phase).

Interesting.  I wonder if there is a tool to determine the lowest fee transactions in blocks.  It would seem the 6.57 sat/ byte transaction was some kind of anomaly or something since it looks like according to this https://jochen-hoenicke.de/queue/#2h  the block at 20:52  didn't quite break into the blue 80-100 layer. 

been waiting for a back to back for awhile.  Nice time to have some fatties!

BLOCK! by pangborn

And by my calculations the lowest fee in that block was ~93 sat/byte.  4 payouts would have displaced 0.10416 BTC or $357.  So that was ~$6 well spent!

It's also more efficient.  Because if we get even a moderately decent time block like 10 min since previous, we probably end up earning an extra $~30 in TX fees for the space that would have been taken up by one payout. 

I was about to, but it looks like they have some more hash now and blocks are coming in faster.  Someone with deep pockets is trying to prop them up (guessing bitmain).  Next step is probably to buy up some BCH so want to wait for better price.