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Author Topic: Swedish ASIC miner company kncminer.com  (Read 3011452 times)
The Avenger
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December 13, 2013, 05:47:56 PM
 #25821

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  Grin

"I am not The Avenger"
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December 13, 2013, 05:55:56 PM
 #25822

I was just about to order a black arrow x-3 but it seems that batch 1 is sold out and batch 2 won't be shipped until april. Anyone have an idea if it's the same for Knc?
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December 13, 2013, 05:59:10 PM
 #25823

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  Grin

Sure nice improvments, they come quite late, though. Batch1 BJ customer have paid 50 btc for one unit long time ago. Just saying...

Bitcoin is a participatory system which ought to respect the right of self determinism of all of its users - Gregory Maxwell.
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December 13, 2013, 06:04:57 PM
 #25824

32 neptunes left - I hope knc deliver in q1 and rain on all these mfs parades.
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December 13, 2013, 06:05:27 PM
 #25825

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  Grin

not 20nm though.....
vesperwillow
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December 13, 2013, 06:11:43 PM
 #25826

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  Grin

not 20nm though.....

28nm 750gh now is >>>> than 20nm 3-6 months from now.

The Avenger
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December 13, 2013, 06:12:02 PM
 #25827

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  Grin

not 20nm though.....
That is one of knc's key selling point for knobtune, but what difference does it make if you can hash exactly the same TH on a well designed 28nm?

Whoever suggested a few weeks back they should have just worked on a better 28nm design rather than 20nm was probably right.

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

"I am not The Avenger"
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December 13, 2013, 06:16:08 PM
 #25828

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  Grin

not 20nm though.....
That is one of knc's key selling point for knobtune, but what difference does it make if you can hash exactly the same TH on a well designed 28nm?

Whoever suggested a few weeks back they should have just worked on a better 28nm design rather than 20nm was probably right.

i do agree, id rather have a tweaked 28nm now....ah well....if i wanted every single thing the way i like it, i would have started my own company, clearly thats not gonna happen so we depend on knc!
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December 13, 2013, 06:20:59 PM
 #25829

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

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.




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December 13, 2013, 06:30:45 PM
 #25830

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

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.



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December 13, 2013, 06:31:34 PM
 #25831

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

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.

But then that would only show the test supply on hand and there are many switching supplies out there.



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December 13, 2013, 06:33:48 PM
 #25832

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
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December 13, 2013, 06:44:01 PM
 #25833

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 Wink

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.

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December 13, 2013, 06:45:46 PM
 #25834

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.

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December 13, 2013, 06:53:45 PM
 #25835

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.

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December 13, 2013, 06:56:08 PM
 #25836

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 Tongue

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.

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December 13, 2013, 06:57:30 PM
 #25837

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.

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December 13, 2013, 07:00:41 PM
 #25838

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  Grin

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 Huh - 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.

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December 13, 2013, 07:01:26 PM
 #25839

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!!!

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December 13, 2013, 07:03:03 PM
 #25840

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.

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