When we had some test sticks with a built-in temperature sensor, VH started noticing hashing problems when the board in the vicinity of what is now the large SOIC IC got to around 120F.

I wouldn't mind a price run-up. Get back to the ~$6.5k equilibrium we were around for the last six months or so. Nothing crazy like, just... stable.

And I wish NewPacs sold worth a darn and coin was still around $7k. What you want would be a lot easier to accomplish.

The best mass-stable results I got when load-testing my hub was six sticks each set to 860mV (stock is 830) and all six were stable at or above 600MHz.

Note that S9 stock settings would be closer to 900mV for 600MHz and up (14TH S9 clocks at 650MHz) to guarantee stability across chip batches, so to hit the higher speeds on this still a bit of overvolting is to be expected.

I usually look for 98-99% target hashrate. Over 99% is going to have an unfavorable power tradeoff (more than 1% increase in heat for that 1% increase in effective hashrate) but below 98% probably means something's wrong.

I would be skeptical of a Plugable 7-port being able to handle 4 sticks at 600MHz, given that it only has 3 regulators so somewhere you have to double up. If one will handle two sticks, they all will, so it'd be capable of six sticks if you had a strong enough 12V brick. However, even with AB the best-case power draw at 600MHz is about 12.5W and the rated load for one Plugable regulator is 4A, so 20W peak.
The best I'd expect for two sticks per regulator would be more like 475MHz (with AB enabled). Note that gives you a max utilization of the Plugable 7-port with six sticks for a total of 650GH, though that's dependent on the power load required for the hub chips. I haven't tested the limits of that hub so this is conjecture based on available data.

Got a hub, by the way.

https://bitcointalk.org/index.php?topic=1779423.msg48665654#msg48665654

USB2 hub, total of 5V 18A provided by three high-efficient 6A regulators powered by 12VDC. Ports are marked by group - 1,2,5; 3,4; 6,7

Accessible 12V pin header on the side for hooking up a 12V cooling fan. Port 1 can also be used to power USB fans with sticks in ports 2-7. This arrangement is optimal since heatsinks would face the rear (cables end) of the hub, with blinky lights visible at the front.

12V power can come from a relatively standard 2.1/5.5mm barrel jack or a PCIe 6-pin.

With this hub and a suitable 12VDC power source and fan it's possible to run six NewPacs at 600MHz each for 800GH total.

Let me know if you want one. Or two. Or a bunch, that'd be cool too.

I think inventing your own currency, making sure that everyone gets a buttload of it for free, and then trading hardware for only that currency ("giving it away") wasn't exactly a brilliant financial strategy.

And do make sure you're installing the ncurses library. The only time I've seen what you're seeing, it was the only thing missing.

And assuming they're not already burned out after running for a year in HashNest.

The NewPac doesn't implement a ticket mask so there's no minimum threshold below which shares are discarded at the chip. All shares, even diff-1 shares, are reported. This means the total volume of data coming back is significantly higher than previous sticks even for the same hashrate. In order to help with the volume, we're also operating the serial bus at about 13 times the bitrate of previous sticks.

All this makes the data bus more susceptible to noise and tight timing and signal-quality constraints, as well as leaving no filter for potentially erroneous shares from the chips.

The HW error rate could be lousy for a near-threshold-voltage stick but as long as the overall hashrate is preserved (within 98% or so of theoretical) I wouldn't worry about it. If your hashrate is reading low, then there's a problem.

You'll have to explain why it's not "transactionally viable", given that the network is literally a store of transactions.

Volatility can be blamed on boogeymen, since they're the only ones who profit from exploiting that kind of thing, and volatility prevents widespread utility. The problem with reduced utility is a self-fulfilling prophecy. People see a thing to be exploited, make it unstable, and there's no mass adoption. Because there's no mass adoption, it remains unstable and exploitable. It's only seen as "a store of value" because the ones who use it that way, by continuing to use it that way, prevent it from being used as intended.

I'll disagree that mining without considering profit is the end-all be-all, but also with the point that industrial miner cartels are hosing things for the rest of us. The current environment is proof of how much power a few specific individuals have and that is far from healthy.

It's going to be really interesting in a few more halvings when the block reward starts getting dwarfed by transaction fees. If the currency isn't widely used as a currency by that point it won't be sustainable and the current profitability model for industrial miners dependent on block rewards will go out the window.

I would also like to see a 100W miner in every home, and not just because jstefanop and I are the only ones still building them. If this thing is gonna work, it needs to have a wide-spread acceptance and understanding and a base less susceptible to corruption and manipulation.

That's pretty bad. 350MHz should get you 80GH each. If it takes that much fan to cool them and the hashrate is still that bad at speed, your voltage is probably way the heck too high. If the flat of the pot is anywhere on the left side it's too high.

"As CCN reported, Marks said people who buy bitcoin do so only because they want to turn a quick profit by selling their holdings to a “greater fool” than themselves.

“This is what we called when I was a kid, the ‘greater fool theory,’” Marks said. “They think someone will buy it from them at a higher price. Not because they can specify its intrinsic benefits. Not because they can judge the intrinsic value. But only because they think it’s going up.”"

Gotta say, I agree with the guy insofar as that speculation and margin trading is what greedy bastards do to ruin Bitcoin - at least ruin it for the rest of us. It didn't start as a get-rich-quick scheme and it better not end that way either. Some of us actually use it as a means of exchange for products and services - a currency - rather than merely as a tradeable commodity, and have been wishing for years for a value based more on utility than hype. That substantial philosophical divide is what separates the men from the boys around here, and folks looking at it as an "investment platform" to profit without putting up any real effort are the boys.

When testing at stock settings before shipping, I was generally satisfied with no more than 2 errors per hour. The bigger thing to consider is if your measured hashrate is within about 99% of expected.

Only Bitmain product I've bought since the S3 days were some S7-LN to hack down to 0.22J/GH and make quiet heaters out of.

I left Bitmain's corner somewhere between when they upped the price of the S5 by 30% in one day just because they could, when they released the S4+ with worse efficiency, worse reliability and worse price, when the S5+ and S7 cemented their strategy of impractically high power and unsustainably high power density and the expected decrease in system reliability resulting therefrom, and when they redesigned the S7 for cheaper manufacture and notably worse efficiency and heat handling but didn't change the advertised specs or price. And that was all in like 2015.

I dropped hosting price to power cost to keep people from shutting down immediately because I need heat for winter. I was at 65% capacity by then already. I'm rolling out a USB hub that should kit nicely with NewPacs but it'll also be a good standalone product whose sales will be insulated from Bitcoin whims, but I'm getting a late start and having half my savings disappear in the span of a few weeks sure doesn't help. It also doesn't help that a lot of my parts now cost more than they used to, thanks Trump.

Phil, if you'd like a sample hub to play with and give me an opinion I can send you one.

I haven't done much mining myself in at least a year but even with the diff dropping, even if I could afford miners I wouldn't buy any.

Well whoever's doing it needs to take a break. Another thousand dollar dump in a week making a 50% drop in four weeks, sales evaporating, hosting customers turning off - I'm really not looking forward to going bankrupt and shutting down my business right after Christmas.

Did you install all the dependencies, specifically libncurses5-dev?

cgminer does display each device's hash rate. What are you seeing?