My oldest is a 2kva one just under 2 years old and so far reports 100% capacity. Mine (uses always online dual-conversion) plays around cycling the batteries and applying different charge/trickle regimes to keep them happy. Don't know if their standby/AVR ones can do that but seems to wok great so far.

To put it in short form, ja miner ASICS could make very simple handy process targets to tinker with. The companies researching 10/7 are not about to make the process targets as for-saleable items.

The fact that IBM and friends have already done a functional mammoth count 7nm test chip says that they are way beyond needing simple targets and have to concentrate on the process and materials basics to make the process usable on a commercially viable scale.

For 1, the EUV laser based light source process is last I heard from Trumpf is still falling short of the expected target of 250w of EUV light on-target (the photo masks). Current output of the system is around 125-150w. Usable but not a profit maker. To say the least, zapping 50k per-sec 10um droplets of tin with several MW of peak power to turn into the EUV light emitting plasma and then collecting/focusing the light is no small feat. Did I mention that it is also al done under high-vacuum? Air is a very strong absorber of the wavelength produced.

I should look into that for mine. At home I have a 11kw permanent genset that kick's in after ~30sec so the on-battery time is minimal but I DO like that remote power cycling. Neva thought of that.

On target for price. Got mine through PCM/TigerDirect Biz. Since they have the terminals for adding additional battery packs, I wonder how they would take to using solar? They are perfectly happy running off of only DC so... Use the solar array to feed them and when the array drops below useful power, have the dry contact relay in the UPS toggle a changeover to the AC line.

Also that particular one uses an auto-switching transformer setup = 1 cycle-or more xfr time. Mine are the https://www.cyberpowersystems.com/products/ups/smart-app-online/ol3000rtxl2u that are always on line eg, converting AC to DC and then back to perfect 120VAC or whatever you program output.

edit: available in 120v and 240v flavors as well. Of course I found that out AFTER getting the 120v one and using a step-up for feeding the miner PSU's...

Hmm. just looked at the 1385 data sheet and dinna see it spelled out. All references are singular, as in 'core'.

More OT here, just checked an my s9 has left Alaska. Still says delivery on Tues but will be Wed at the worst. Got a nice shiny new Cyberpower 3kVA dual-conversion UPS hooked for it at home just a-waitin' for it Love those things -- 0 transfer time because it's always on-line and depending on the %of max load on them, they can keep running off the line down to -60% nominal. Weighs a freakin' ton though. Sure as hell don't want any power disruptions to be taking out 14THs...

Ja. Silly question perhaps but how many hashing cores/engines do Bitmains chips have (or Avalon's, BitFury's)? In the 1385 data sheet they always refer to things as 'core'. Singular, not plural or more.

I believe the Monarch had 256 cores/chip or something like that. I know Inno/Bitmine.ch's A1 had "27 highly optimized hashing engines based on custom ASIC cells up to 1.6M" (quote from the A1 spec sheet). IF what they refer to as cells are actually gates (or if each cell is actually 2 gates) then that raises the count but even w/256 nearly 10x more gates it's a long way from the near 2-billion in the latest (affordable) CPU/GPU/s.

2112 wanna pop in on this? Should be right up your alley.

As for mining ASIC's at the 10/7nm nodes: Not for a long long time. Read the articles again: The focus is on putting massive #'s of gates in the dies eg, more cpu cores, more and larger L1/2/3 caches, etc. Not fitting more chips on a wafer or dropping power needs. That implies that doing scads of chips with fewer than several billion gates just ain't worth it.

We've seen the results of ASIC companies trying to fit entire miners on just a couple huge chips and the results were not good. Even then they were talking about probably only a few million gates at most in BFL's Monarch chips for one example..

Ja. IBM - and Apple for the most part - had no idea what they had given birth to. For the IBM-PC it was the accountants buried in dimly lit back rooms or small store fronts that gave praise to it when the first spreadsheet program came out. One story has several breaking out in tears when they first saw how they could now tally up the books and produce records vs filling in each entry on paper and using a comptometer (adding machine) or doing the math in their heads and scribbling down the tallies...

If ya read the entire article and the link to the more detailed Ars Technica http://arstechnica.co.uk/gadgets/2015/07/ibm-unveils-industrys-first-7nm-chip-moving-beyond-silicon/ one you will find that they are not using just Si.

"Creating a working 7nm chip required moving past pure silicon, IBM revealed. IBM—working with GlobalFoundries, Samsung, SUNY Polytechnic Institute, and others—carved the transistor channels out of silicon-germanium (SiGe) alloy in order to improve electron mobility at such a small scale. Intel has also said 10nm will be the last gasp for pure silicon chips."

Along those (Intel) lines, from the same Ars Technica article, " Earlier this week, a leaked document claimed that Intel was facing difficulties at 10nm and that Cannonlake (due in 2016/2017) had been put on hold. In theory, 7nm should roll around in 2017/2018, but we wouldn't be surprised if it misses that target by some margin."

I was thinking more along the lines of what would happen if one of the fixed resistors in the DPOT reference voltage divider went bad. That would change its output. Still, was just a shot in the dark.

So problem is the PIC itself blowing?

Query: Has anyone checked to see exactly what causes the failures on these boards? Specifically, could it be from a chip resistor in the VRM circuit failing?

Reason I ask is that Bourns just put out a white paper on their sulfur-resistant resistor packages and in it they specifically mention China and India as areas where sulfur pollution (in the air) is a problem. Sulfur in the air attacks a portion of the silver plating connecting the internal resistance element with the chip terminals and can lead to the resistor cracking/simply opening. Considering that miners are often tested for a fair bit of time before shipping one has to wonder if they were ran during high-pollution alert days...

Jaa I agree that UPS's way of doing it is nutz. 2x I got tripped up by the fee's due delaying a delivery but on the whole UPS has been the best for me. What I do now is check the package status on the UPS site the day before delivery. So far, if there is monies to be paid they will show that on the tracking page so I can get the payment done before the driver arrives with the miners.

If you are ever up here in area feel free  to stop by. Current work is to once again leapfrog ahead of what our few competitors can provide. Since the last industry jump I did back in 2007 they are slowly figuring how we do what we do so bloody fast and tiny. http://www.industrial-lasers.com/articles/2007/11/processing-ceramic-substrates.html (edit: note the article was our 1st release of Public information. In 2010 we skyrocketed speeds to now 5x those mentioned...) The LED lighting explosion going on everywhere is a direct result of what I came up with back then re: micro-machining ceramics for die heat spreaders in the emitter chips and other high power density chips. The actual emitter dies are smaller than the then-current thermal/electrical via sizes *were* back then. We shattered that limitation so more emitters in same package size. Figure another 2-3 years tops and they will be offering what we do today if they can work a way around our patents.

Still nice shaving of the power. More #'s for me to play with to see how much hash & 'spare' miners I can fit in my power budget.

edit: re: my free power (at work) advantage. While playing with numbers turns out I'm using 23kw there which at our rate works out to just s tad under $1,600/mo. Anywho, after deducting that from what the entire farm brings in including what is at home, I'd still NET around $5k/mo. Think I might talk to my Partner about setting up an automatic Coinbase xfr to the company each mo to be nice, eh?

I can certainly afford the BTC2.7-2.8 per month and it'd help a bit towards our current massive R&D expenses piling up for this year. To date that is somewhere close to $450k and climbing fast. That's not counting the usual price of a very nice Ultrafast laser from Trumpf http://www.us.trumpf.com/en/products/laser-technology/products/solid-state-lasers/short-pulsed-lasers/trumicro-series-5000-femto-edition.html that is so far on a FREE 6/mo loan to us from them... OTH, I have nice shiny new toys to play, er, I mean do mid-Pico down to high Femto-sec time scales material interaction tests with. With a selectable choice of IR/Green/UV wavelengths no less.

Me likey. Me likey a LOT!
Considering with the 3 s7's I had planned taking off line at home (being replaced with ma s9 whenever it gets here) and the 2x batch-18 um, spares, I have. This is looking very good: After undervolting the farm to stably run ~ 4THs per miner pulling under 700w (edit, 1,100w) each would let me put most if not all the s'7s I have back online with still less than my current power budget. 'Taint ran the #'s but  methinks more THs ta boot

Tossing a coin into the tip jar for this!

So if I dial up the output from a IBM 2kw supply another 1/10v or more, things might get interesting...

Sidenote: After the bonded T1 service at work that supplies the VOIP phones and i'net being down since ~ 7:30 this morning, as of 1 hour ago it looks like it's back up. I left 2 s5's powered up there to watch on ck pool. That outage dropped me 86.4THs for (over) 14hrs.   More of a bugger is that now I just don't feeling like going 20 miles to bring it all back up. That can wait til the morning I...

Well, excluding IBM/Intel there is only TSMC, Samsung, and GF doing 16/14nm nodes for the commercial market. With TSMC booked mainly with their 1st in line no matter what Tier-1 customers and aside from Samsung's foray with BW, Samsung really really preferring to keep their 14nm production for in-house (well, company) use only, I'd think that leaves GF in a rather nice position.

No earthquakes/Tsunami's, great country infra for getting supplies (Korea is still a nightmare. Just try to find a local(ish) store selling say, a common glass 3AG fuse is neigh impossible even in or near the major cities. In the US? Go to the hardware store.) More to the point, GF is using 14nm tech licensed from Samsung and has few(er) Tier-1 customers so production availability should not be a problem.

Interesting...
On the batch ones, is the string voltage set by what the PSU provides (at the PCIe plugs) or a fixed board-level buck? I ask because I have a b1 at work that has oc'd beautifully - set to 700MHz both ck and M's Miner Monitor pegs its average hashrate @ 5.43THs with peaks of 6THs and higher   I have a b5 that does almost as well. Wonder what they would do with a tad more Vcore done by raising the PSU voltage a tad?

+1 Nice.
I'll have to look into the DPS-1520. I assume it's a 1500w supply? If so and if priced like the HP-CS 1200w supplies then it'd make a perfect fit for s7's and s9's.