would be nice to change the start point of the option. for underclockers, starting at 60% and waiting almost 10 minutes for it to creep down to 10-15% might be excessive, and a 20% or 40% start option would be good

@zvisha: would temperature/frequency changes from scheduling have and significant negative effects on the hardware? Ive always stuck to the concept of 'if its working, dont change it' because some computer hardware does not handle significant and repeated temperature/vltage changes very well.

+1, though the 52-pack is really only a small savings per unit (compared with SP-T, where the 3pack is a savings of almost 25%/unit)

a well-priced 10pack of S5 would be an easy purchase

it could if you had a 300W 10.5V (approx) power supply

what the heck are you going on about? MBP is in no way cointerra. lets put some things straight:
1) The 100TH mine was effectively a cloudmining contract, where shares were for a fixed fraction of a mine consisting ofbitfury 55nm. It was a clearly-worded pre-order of unfinished bitfury gen1 hardware.
2) the 55nm bitfury chips are about 1w/gh, which is why they are now become expensive to run - it does not seem unreasonable to implement higher fees to cover operational costs, which 30% of bitcoins mined seems about correct
3) AFAIK there was no plan to magically upgrade to gen2 equipment. from the start it was gen1. because of a late rollout, it increased in size to 500TH (which was pretty reasonable IMO) to try and return value to the shares

not sure where cointerra fits in. the BF28nm chip would have nothing to do with the cointerra design, and a similar die size or efficiency is not even remotely proof that they are the same chip.

ouch, 0.5w/GH isnt profitable? I'm operating 1w/GH gear still - at a marginal (~$0.75/day) loss though, but am bullish we will see >$250 sooner than the time and annoyance of putting money into an exchange

I have about 100 now, and 300 more arriving around the end of the week. For buyers looking at 150+ direct shipping is available and is cheaper/cable but takes an extra week

it wont let me do btc deposits right now, whats up?

look into the cron/crontab settings. Its not the most noob0-friendly way to do what you want, but it allows you to setup the system to alter files at set times or intervals. I used it ton an antminer S1 where it had two scheduled tasks:

@10am: save asic-freq as asic-freq-night, rename asic-freq-day to asic-freq, restart the mining process
@5pm: save asic-freq as asic-freq-day, rename asic-freq-night to asic-freq, restart the mining process

asic-freq-night was set to a higher frequency (say 400Mhz) while asic-freq-day was a lower speed (325Mhz).

honestly, overclocking shouldnt break the unit unless you really push it too far and mess it up. It might wreck your warrenty, but most warranty claims for bitmain products relate to DOA or faults that occur within the first 24hrs. an antminer than lives past the first 48hrs of operation should be able to survive for most of its 12month lifespan as long as temperatures stay below 65C averages

try the OC - 437.5MHz is quite extraordinary, but you can likely get 412.5MHz (1.32TH) or maybe 425Mhz

Im amazed you could push it that far - I put my B1 test unoit up against a window drawing in -7C air and it seemed to max out around 1.32TH/412.5MHz. Going to 425MHz knocked hashrate down to around 1.25TH without much increase in the HW error rate.

thought i would throw a post in here - I sell 24" PCIe---PCIe 16awg cables that are ideal for some of the jabberwocky boards. see my signature link for details

(note: the PCIe-PCIe varient costs a little more and that change isnt shown in my threads pricing system YET - its approx $0.10/cable more expensive than the one-ended varient)

a lot of the big players upgraded to stuff thats <1w/gh, and/or pay <$0.08/kwh worth of costs and maintenance. they can be squeezed a bit further before they have to shut down.

but the farms that never unloaded the AM gear or those A1/dragon units are probably struggling hard right now, even if they pay low power costs.


personally, Im hoping we see a bubble after another 2 weeks of this despair and hashrate shutting down. A bubble causes mining to be profitable to a much wider audience, and the rapid price increases allow hundreds of small miners to deploy more equipment on outlets/locations they had already, compared to months of planning and rollout required by the big guys like Bitfury. typically it helps decentralise it and profits whoever can plug the gear in fastest

yeah, looks like the rebound happened nicely. Probably gonna dip below $200 again once more, and then hopefully we can finally see it get bck around $250 and begin a real uptrend

i think a -8% change is still very likely, there are probably a lot of machines mining at a slight loss because they expect BTC>$250 again soon. if tat doesnt happen it will keep shaking out all those with high priced power or low efficiency hardware.

Im just glad that of my 20.5TH, 16TH of it is 0.5w/GH or better, and the remainder is an SP10 (~0.9w), S2 (1w), and BTCG (1.2w).  I plan on turning the bitgarden off very soon, as well as the S2, since they are both working at a slight loss. Hopefully the market goes up and in a few weeks they will turn back on

mine has insanely low error rates at 362.5MHz. something like 0.0088% if the webUI is true

lets keep this one free of any 'serious'-ness....

my guess: -8%

My guess is that at $280 we would see a 0% change. every $10 more or less than that will probably be a 1% difference.

right now i think -6% is pretty damn likely. Ive turned off the S2 and the BTCGarden for now, but all my SP-tech gear is still profitable and raking in btc.

thats my guess. a push down to meet resistance around $200 is possible, but i think that looking at the past month of chart, a rebound to $300 is appropriate, settling at $280 for the next move

I feel like we could see something drastic, like -5%, in the coming difficulty period.

There is little incentive to buy hardware right now (anything over 1BTC/TH isnt a great price, and anything under 1.5BTC/TH is really cutting into the manufacturer budget) at BTC<$275

There's also a LOT of hardware (probably 5%) that will turn off because the difficulty increase got them, and another 10% that will do it because BTC<$275 isnt viable

8.20% - not too shabby, Im really happy that it was <10%. I think we will see a lot of hardware turn off at this new difficulty, and next jump could be around -2% if price doesnt move upwards drastically and soon

no luck - it seems like everything went fine, but either the "-bmsc' in the cgminer folder name is causing an issue, or another thing is - because the cgminer/minepeon webUI no longer works and i cant start cgminer from within SSH

any chance of posting a download link to a completed SD image I could use?