Topic: Wu Announces BM 7NM pending Miner release. 42 J/TH (Read 997 times)

Where are these rumours from phillipma?
https://twitter.com/btcking555 i hope its not this guy (conjecture: who i think is excellion anyway)

42J/TH ... didn't happen yet. Hope Halloween will bring some candies.

Hey Phil, I wouldn't get my hopes up on the efficiency. There are alot of problems it seems with the 7nm chips and it is very hard to get good efficiency on them. It may get something around 60-70watt/th but I seriously doubt anyone will get anything below 50watt/th in the next few years. I'm not a chip engineer so I don't know the whole detail so perhaps others that are more knowledgable would chime in as to why. But yea, so far the big brands are struggling to get the performance to where they want it to be. I expect Bitcoin mining to shrink if anything (in terms of miners) in the coming years. Anyone above 0.05kw/hr will be hard pressed to stay in the game.

Hopefully the (potential) built-in PSU will be modular and simple to change/replace. Looking at my T2T, I can imagine tinkering and replacing the built-in PSU with a APW5 by removing the PCI cabling and using the bolts. I can also imagine killing my T2T this way haha. Has anyone ever replaced a built-in ASIC psu with an APWx?

thats the frustrating thing. I have THOUSANDS of 2450w PSUs that would go to waste in this scenario. Hopefully they do like in the past and make a version with and without. Previously all of their built in PSU systems were for the chinese market only.

and forces you to buy it with the psu attached, since the psu needs to handle about 2100 watts.

and forces you to buy it with the psu attached, since the psu needs to handle about 2100 watts.

I dont see any reason why people would want to pay extra for a built in PSU. Anyone doing mass upgrades from the S9 already has power supplies, most likely of a higher quality than the ones that come built onto miners. I know the last thing I want is another proprietary part in my datacenter that I cant just switch out on the fly.

Unless the s11 does 45 watts  and 30th with a built in psu and costs under 1000 usd.

Well something is definitely going on since Bitmain is now out of 16nm chips (from my sources). From what I hear they are full-steaming for production of this new 7nm wafer. Bad news for anyone with an S9 since there will be no support in 3 months (but it'll be trash by then anyways so...)

Well something is definitely going on since Bitmain is now out of 16nm chips (from my sources). From what I hear they are full-steaming for production of this new 7nm wafer. Bad news for anyone with an S9 since there will be no support in 3 months (but it'll be trash by then anyways so...)

Not disagreeing with you, joules were never covered in math class. Let me see if I got this right...

.1J/GH (or .1W/GH) comes out to 100J/TH. So 42J/TH would make it roughly 138% more efficient?

The stated efficiency is only for the chip and not the miner (and only in a lab so best case) so I would expect something like 55 J/TH rather than 42 J/TH but that is not really that impressive since Whatsminer is doing that on 16nm.

nice tweetstorm from Samson Mow
https://twitter.com/Excellion/status/1043181897319247872

and yes, I know Samson Mow and Jihan Wu aren't exactly friends but he raises some interesting questions.

You need to learn some more math.

If it would be four times as efficient, it would mean 25 J per Th/s.

Can you elaborate? Not sure I follow

Math is off: 42% of the power is used for same hash, or a bit more than 2x as efficient which is still quite impressive!

It will be more like 2 - 2.5 times power efficiency gain vs. the Ant S9.

It will be more like 2 - 2.5 times power efficiency gain vs. the Ant S9.

My assumptions; 28-32 TH with a 1700-1800 watt power draw.

They published a press release here: https://blog.bitmain.com/en/bitmain-announces-next-generation-7nm-asic-chip/

NEW MINING MACHINE WILL BE AVAILABLE SOON
New Chip Uses the 7nm Semiconductor Manufacturing Process and Will Greatly Improve Power Efficiency

BEIJING, P.R. China, September 21, 2018 – Jihan Wu, CEO and co-founder of Bitmain Technologies Ltd. announced Bitmain’s next-generation ASIC chip BM1391 for mining cryptocurrencies using the SHA256 algorithm at the World Digital Mining Summit in Georgia today. Mr. Wu also revealed that Bitmain will soon launch a new generation of mining machines equipped with the BM1391 chip.

The new ASIC SHA256 algorithm acceleration chip carefully built by Bitmain uses one of the world’s most advanced semiconductor manufacturing technologies, 7nm FinFET. The ASIC chip integrates more than a billion transistors and is optimized for maximum efficiency. Thanks to its unique circuit structure and low power technology, it is stable and more efficient. Mr. Wu said tests have shown that the chip can achieve a ratio of energy consumption to the mining capacity that is as low as 42J/TH.

At his keynote speech at the summit, Wu Jihan said mass production of the 7nm chip will begin and be applied to the next generation of Bitmain’s Antminer machines, improving the new miners in various performance indicators, in terms of power and power consumption, and enabling outstanding performance.