Swedish ASIC miner company kncminer.com

[soy]

An interesting test might be to measure the 3.3v rail on the motherboard plug of a working miner that has a jumpered motherboard plug.  Shut down the miner/supply and watch how quickly the 3.3v rail discharges or not - use a digital meter not an old analog multimeter.

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[opentoe]

Is anyone stacking their units?? If so, what are you using as spacers between them?

The rubber feet each Jupiter has?

Is that going to be enough? the cases are pretty warm, i would like something that raised them up a little bit more.

How warm?
Mine are in a room, that is quite hot, yet the metal surface of the lid is slightly warm.
I don't think it would be a problem to stack them directly

Not boiling hot, but a little bit warm. Thanks for the tip, I need to do something about them, my basement is a mess!

https://bitcointalk.org/index.php?topic=7216.msg3742598#msg3742598

The air sucks into those fans (where the Ethernet port is) and expels all the hot air through the rear grill. The back of your rigs, where the hot air expels, isn't pushed up against the wood, right? It assume it is open behind there heating up your house or heating up something.

[opentoe]

Anyone have any problems running the Nov. jupiters from EVGA G2 1300w? I had 2 shut off last night for no discernible reason, except that they both use the same EVGA psu. I have 4 other jupiters using the same PSU... so don't understand.

Do you use the paper clip trick to power on the PSU? If you do, make sure there is a solid/good/tight connection there. If it is not, it could power off the PSU.

[opentoe]

https://www.dropbox.com/s/jqp3n3btawce03a/Photo%20Dec%2012%2C%203%2008%2025%20PM.jpg


Another blown cap, was from the one that was having trouble on the EVGA, so I swapped to a tested and working OCZ 1250W gold, and poof.

This SHOULD NOT HAPPEN. You are supposed to hook up a PSU to these miners to power them up. If your miner blows up because you are doing exactly what the manufacture says, then it should obviously be warranty covered and taken care of. Sorry this had to happen to you.

[opentoe]

Another thing - Wish KNC had Saturday delivery available/readily offered. I know it's an extra 15$ for UPS Saturday Delivery, but 2 days of extra hashing is definitely worth it.

That's a VERY good point.

+1

All three of my Jupiters could have been delivered on a Saturday instead of Monday. That's a lot of lost hashes

If they use DHL, then it could be delivered on Saturday like my Saturn was. DHL works and makes normal deliveries on Saturday, unlike UPS and Fedex which charge you gold for that.

[vesperwillow]

Let's be honest - the only reason knc are doing 20nm is to justify the ridiculous price.

I was thinking today.. I wish I'd had the spare funds a few months back to buy in when it was $100/btc.

Neptune would've cost me a grand ...

This is one reason why I enjoy the possibilities with bitcoin. Sure, the value fluctuates, but that can create some great opportunities for those already in it.

[Biffa]

It's Friday 13th, time for something spooky:

https://hashfast.com/hashfast-announces-fastest-bitcoin-mining-chip-in-the-world/

500GH/s on a single chip.

And they expect to get more.

If they can get it up to 750GH/s (i.e. 3TH/s on 4 boards), they will have acheived now what KNC are promising 7 months from now  

Wierd, why you are happy?

If you had bought a batch one hashfast rig I think you'd be as bitter towards them as you are towards other companies. Have you read the HF thread?

Also 4 boards - they only do a one board machine (BabyJet), a two board machine (BabyJet+Upgrade) and a three board machine (Sierra). There is no 4 board machine, unless you buy boards wholesale and build your own.

Lastly, just a slight correctection, Neptunes are "at least" 3TH, given that from initial expectations to final result the Jupiter machines went from 350GH to 650GH there is some small expectation that they will over deliver again.

[Biffa]

Let's be honest - the only reason knc are doing 20nm is to justify the ridiculous price.

I was thinking today.. I wish I'd had the spare funds a few months back to buy in when it was $100/btc.

Neptune would've cost me a grand ...

This is one reason why I enjoy the possibilities with bitcoin. Sure, the value fluctuates, but that can create some great opportunities for those already in it.

No but it would have cost you 120 BTC!!!!! OMG!!! THINK OF THE ChILDREN!!!

[opentoe]

Anyone have any idea why all my Jupiters change their IP addresses even though they are setup for static.
I set them all like this and a few hours later a random miner get a different IP, I change it back, then another miner gets a different IP and so on.

No idea but you may want to look into DHCP reservation as a work around.  Most routers support it and honestly once you get it down you will never go to static IP addresses again.  Many enterprise grade networks use it because it simplifies management.

Set all the Jupiters to use DHCP and then in your router there should be a section on DHCP reservation.  In the router you assign a particular network device (PC, mining rigs, printers, etc) a particular IP address.   

So the jupiter boots up contacts the router (DHCP server) and always get the same IP address assigned by DHCP.  The nice thing is all the config is done in the router so the device only needs to support DHCP.

I have 8 computers and many other IP based devices on my home network and couldn't live without DHCP reservation. I've been using it since routers starting using it and I've never hard coded an IP stack since then. I highly suggest everyone does this that has this ability, since once you go that route it's pretty much trouble free. Let your router do all the work, not you.

[Epoch]

1) The SeaSonic has two PCIe connectors one one cable.  Don't use two on one cable.   You should have 4 connectors plugged into the power supply itself (plus mother board and molex connectors).  That means you will have 8 PCIe connectors use only one from each pair.

That did the trick, thanks. The SeaSonic cable has 6 separate 12V lines coming out of 1 modular connector, which splits into 2 separate PCIe connectors with 3 12V lines each, so I had assumed it would be ok (the 12V lines are not shared). But apparently there is a power limiter in the individual output connectors coming from the PSU.

[opentoe]

32 neptunes left - I hope knc deliver in q1 and rain on all these mfs parades.

I hope they don't deliver until August or May. OR NEVER! I couldn't bring myself to even spend 10k when I had the chance on such a big delivery window. If a company can't boil down to at least what quarter they will have a product, then it clearly was a rushed advertisement and they just wanted to stock up on big money before the year went out. I'm a hater today.

[Biffa]

I'm just going to put this out there, but I got a gut feeling that if Hashfast deliver in December, and its looking like they will, depending on how "substantial" it is then KnC may do another batch of Jupiters.

Their policy was not to produce any more batches in December 2013, January 2014 or  February 2014 unless any of their competitors add large amounts of hashing power to the network during the same period.

Hopefully, if they do, they will be comparable in price to their competition i.e. <$4K

[opentoe]

Let's be honest - the only reason knc are doing 20nm is to justify the ridiculous price.

I was thinking today.. I wish I'd had the spare funds a few months back to buy in when it was $100/btc.

Neptune would've cost me a grand ...

This is one reason why I enjoy the possibilities with bitcoin. Sure, the value fluctuates, but that can create some great opportunities for those already in it.

Not really, since KNC still puts the price in USD prices and still requires bitcoin. A company truly accepting bitcoin doesn't look at the USD worth at all. Trust me, weather BTC was $10 or $1000 you still would have had to pay $10k.

[soy]

Kaboom! http://s28.postimg.org/v71hnbm71/SAM_1801.jpg

PSU: OCZ ZX 1250W. Found the Jupiter shut down. Tried to start it and nothing happened. Removed cables, put them back and poof fireworks. Waiting for my RMA.

Hashing with 3 boards and not whining.

Has anyone tested soy's theory about the 3.3v filter caps on the PSU being the issue causing max current to be delivered and blowing caps?  I wanted to but I have no way of measuring more than 10A without frying my mulitimeter so its not a good test.

By the by I received my RMA board back yesterday and everything works great!  I did put a 2w 18Ohm resistor on a 3.3V line just in case but who knows really.  Thanks again KnC!

I would suggest if you shut down your PSU for anything, unplug it and give it 10 minutes before starting again, just in case.  A bit of paranoia is better than straight up gambling I think.

The ramping of current on the 12v line isn't theory but said by the tech rep from the VRM manufacturer.  When one of two engineers designing a switching-servo-amplifier that I was breadboarding as a technician around 1977 designed the then novel switching scheme while our US company was a division of Kollmorgen, he having gotten his degree from Brooklyn Poly Tech,  the triangle wave which to a comparitor input would see a lowered DC voltage on the other comparitor leg (that voltage the feedback) until the top of the triangle wave was encountered at which point the output would swing from one rail to the other for the duration of the interception.  When the lower voltage (feedback) would reach the triangle wave and the output swing from say zero to full voltage, the controlled voltage would increase raising the feedback voltage level above the triangle.  Typically to maintain an output voltage at some current the comparitor would have the feedback level at some stable level intercepting the triangle wave producing a square wave with the necessary duty cycle.

The triangle wave was produced with a current source charging a capacitor then discharging the capacitor.  Voltage charging a capacitor happens at a changing rate over five time constants.  Current charging a capacitor, or current discharging a capacitor,  will result in a non-curving slope; charge/discharge will give a triangle wave, not an approximation like if you only use the first time constant but a linear charge and discharge.  

That up-ramp of current on the 12v line would follow a straight line, a non-curving slope.  That rise would be dictated by a voltage produced elsewhere by a current source charging a capacitor, that would not  be a filter capacitor.  

There would be an internal filter capacitor on the 3.3v line.

My theory is that the up ramp for the current would be perhaps between 0v and 1v produced using the 3.3v rail because the 3.3v rail would have established itself before the 5 volt rail or the 12 volt rail, and that with no load on the 3.3v rail, e.g. no motherboard in place and a jumper on the motherboard plug, the up-ramp charged capacitor might not be brought back to 0 volts but remain at 1 volt or the full current condition.

One way to disprove that element of my theory, 3.3v rail getting stable before the 5v or 12 volt rails might be shown or not by someone with a nice fast sample and hold oscilloscope and a camera.

Ah, my failing memory is showing.  I meant not sample and hold, which is a common circuit for sampling a voltage and holding it for some reason,  but a scope with memory, then triggering the sweep at startup and multiple probes measuring the voltage rise curves, see what happens when to each voltage at startup.

[vesperwillow]

Let's be honest - the only reason knc are doing 20nm is to justify the ridiculous price.

I was thinking today.. I wish I'd had the spare funds a few months back to buy in when it was $100/btc.

Neptune would've cost me a grand ...

This is one reason why I enjoy the possibilities with bitcoin. Sure, the value fluctuates, but that can create some great opportunities for those already in it.

Not really, since KNC still puts the price in USD prices and still requires bitcoin. A company truly accepting bitcoin doesn't look at the USD worth at all. Trust me, weather BTC was $10 or $1000 you still would have had to pay $10k.

Uh.

10 btc purchased at $100/ea = $1,000 my cost.

1 Neptune = $10,000USD, which at the time of availability, would've been 10btc.

10 btc sent to KNC = $1,000 my cost.

What are you missing about this?

[xstr8guy]

I'm just going to put this out there, but I got a gut feeling that if Hashfast deliver in December, and its looking like they will, depending on how "substantial" it is then KnC may do another batch of Jupiters.

Their policy was not to produce any more batches in December 2013, January 2014 or  February 2014 unless any of their competitors add large amounts of hashing power to the network during the same period.

Hopefully, if they do, they will be comparable in price to their competition i.e. <$4K

I believe KNC is geared-up already and just waiting for the competition to release.

But... and here's the kicker... KNC will be shipping only Jupiters (no Saturns)from stock or with a very short build time.  Remember, no one else will be shipping orders made today until March/April at the soonest.  Therefore KNC will be pricing accordingly, easily double your $4000 guesstimate.

Bitfury did the same thing.  30GH/s boards were $500 two months ago but are now $1000 each.

Hash power today is worth MUCH more than hash power in 3 or 4 months.  And no, the cost to produce a product has no bearing on its price as long as there is a demand for that item.

[xstr8guy]

Let's be honest - the only reason knc are doing 20nm is to justify the ridiculous price.

I was thinking today.. I wish I'd had the spare funds a few months back to buy in when it was $100/btc.

Neptune would've cost me a grand ...

This is one reason why I enjoy the possibilities with bitcoin. Sure, the value fluctuates, but that can create some great opportunities for those already in it.

Not really, since KNC still puts the price in USD prices and still requires bitcoin. A company truly accepting bitcoin doesn't look at the USD worth at all. Trust me, weather BTC was $10 or $1000 you still would have had to pay $10k.

Uh.

10 btc purchased at $100/ea = $1,000 my cost.

1 Neptune = $10,000USD, which at the time of availability, would've been 10btc.

10 btc sent to KNC = $1,000 my cost.

What are you missing about this?

 
Don't bother trying to explain it to him.  People like that just don't get it... and never will.   

[vesperwillow]

But... and here's the kicker... KNC will be shipping only Jupiters (no Saturns)from stock or with a very short build time.  Remember, no one else will be shipping orders made today until March/April at the soonest.  Therefore KNC will be pricing accordingly, easily double your $4000 guesstimate.

They shouldn't, because they said if they did ship again, they would do it at a discounted rate.

It's presumed a Jupiter wouldn't cost 30% more than it did weeks ago, coming from the same company, using stock they already own which isn't being used.

And if they did do that, a lot of their "loyal customers" would get very hot very quick.

[vesperwillow]

Don't bother trying to explain it to him.  People like that just don't get it... and never will.   

+1

Apparently..

[ASIC-K]

Let's be honest - the only reason knc are doing 20nm is to justify the ridiculous price.

I was thinking today.. I wish I'd had the spare funds a few months back to buy in when it was $100/btc.

Neptune would've cost me a grand ...

This is one reason why I enjoy the possibilities with bitcoin. Sure, the value fluctuates, but that can create some great opportunities for those already in it.

Not really, since KNC still puts the price in USD prices and still requires bitcoin. A company truly accepting bitcoin doesn't look at the USD worth at all. Trust me, weather BTC was $10 or $1000 you still would have had to pay $10k.

Uh.

10 btc purchased at $100/ea = $1,000 my cost.

1 Neptune = $10,000USD, which at the time of availability, would've been 10btc.

10 btc sent to KNC = $1,000 my cost.

What are you missing about this?

 
Don't bother trying to explain it to him.  People like that just don't get it... and never will.   

+1