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Author Topic: Swedish ASIC miner company kncminer.com  (Read 3006580 times)
jelin1984
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June 21, 2014, 02:54:52 PM
 #35521

Final no roi for anyone




Knc must simple
Sell at December undervolt Jupiter chips
At 10.000 dollars
Why they spend so many dollars for make an awful chip
I can not understand
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samsonn25
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June 21, 2014, 03:05:35 PM
 #35522

I think he's saying it's inside or under the chip like in processors

Just so it's clear - the black components you very clearly see here:



EQUALS

The numbers you see next to the words "Temp":




These components are about 2 to 3 inches away from the chip and the temperature reading is 58C  Shocked

Can you even imagine how hot that chip is in it's core?

That far away from the chip, the readings are almost useless.

But as I said, it was done by design. KNC hiding their shitty engineering.

More smoke and mirrors. That way they show you a lower temp instead of 100 degreed Celsius on cbip. Which is pretty damn hot
The Avenger
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June 21, 2014, 03:07:36 PM
 #35523

More smoke and mirrors. That way they show you a lower temp instead of 100 degreed Celsius on cbip. Which is pretty damn hot
Exactly.

And we all know that excessive heat and electronic components do not mix very well.

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tzortz
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June 21, 2014, 03:13:01 PM
 #35524

Core temps cannot be correctly measured that far away.

You are right. That is why those chips shown circled in red in the original post are not used for core temperature measurements.


You need to learn when AVNGR is just being a troll and when he is serious. Hint:  he's always a troll.


Can you please explain, whether or not is a temp sensor inside the core chipset?

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opentoe
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Personal text my ass....


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June 21, 2014, 03:16:38 PM
 #35525

Get an iR temperature dot on that VRM and see how hot it really is. I'll guarantee you the bottom PCB's of those boards are already starting to turn brown from burn.

My Dad's Jupiter had a DIE die on him and KNC replaced it with a used board. We really didn't expect a new one anyway, and the bottom of the "new" PCB board was all brown from burning in. Long story short the replacement board worked and I made sure to tell him to try and keep it cool as possible. The VRMs were running so damn hot they physically burnt the board. Crazy that KNC would actually send that one back to replace a broken one. Cost $65 to send one little PCB back to Sweden, that's why we didn't ask for another one.

And where the heck is an open box??? Someone must have recorded one by now?

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June 21, 2014, 03:16:51 PM
 #35526

There should be.  But only KNC can see it through their programming. And it depends if they want you to know or not.
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June 21, 2014, 03:18:11 PM
 #35527

Get an iR temperature dot on that VRM and see how hot it really is. I'll guarantee you the bottom PCB's of those boards are already starting to turn brown from burn.

My Dad's Jupiter had a DIE die on him and KNC replaced it with a used board. We really didn't expect a new one anyway, and the bottom of the "new" PCB board was all brown from burning in. Long story short the replacement board worked and I made sure to tell him to try and keep it cool as possible. The VRMs were running so damn hot they physically burnt the board. Crazy that KNC would actually send that one back to replace a broken one. Cost $65 to send one little PCB back to Sweden, that's why we didn't ask for another one.

And where the heck is an open box??? Someone must have recorded one by now?


Was your temp over 95?
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June 21, 2014, 03:19:06 PM
 #35528

Just ssh into the control unit and reattach the cgminer screen, then look for temperatures Wink

On the other hand, most silicon does fine at 124°C, so no worries about temps.



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dropt
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June 21, 2014, 03:22:25 PM
 #35529

You are right. That is why those chips shown circled in red in the original post are not used for core temperature measurements.

What do you propose they are measuring way out there on the edge of the board?
fubly
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June 21, 2014, 03:26:06 PM
 #35530

Todo for KNC:

absolutely new design of the asic and controller board.

It could not be, that others squeezze from an 28nm chip 750 Gh/s and knc only 660 Gh/s on 20nm Chip. I guess batch 4 will based also on 20nm chip but new bord-design.

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June 21, 2014, 03:28:56 PM
 #35531

 But for longevity and life span under 60 degrees is highly recommended.
The Avenger
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June 21, 2014, 03:29:49 PM
 #35532

Can you please explain, whether or not is a temp sensor inside the core chipset?
There is no temperature sensor in the chips. The black components I've pointed out are used to give a rough indication of how hot the chips are. If you see my last post, it shows where this data is displayed in the interface.

This temperature component was closer to the chips on Jupiter, but much further away on Neptune boards. I've already explained why I think this was done by knc, but people can make up their own mind if they think differently.

I can't wait until someone with a thermal imaging camera gets one of these rigs and we get to see some REAL core temperatures  Tongue


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samsonn25
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June 21, 2014, 03:30:28 PM
 #35533

You are right. That is why those chips shown circled in red in the original post are not used for core temperature measurements.

What do you propose they are measuring way out there on the edge of the board?

To move the sensor closer to where the chip is at.  Lol
helmax
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June 21, 2014, 03:31:22 PM
 #35534

fuck
this neptune is crap
high temp on vrms

looking job
Tigggger
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June 21, 2014, 03:41:20 PM
 #35535

Just so it's clear - the black components you very clearly see here:

<snip>

EQUALS

The numbers you see next to the words "Temp":

<snip>

These components are about 2 to 3 inches away from the chip and the temperature reading is 58C  Shocked

Can you even imagine how hot that chip is in it's core?

That far away from the chip, the readings are almost useless.

But as I said, it was done by design. KNC hiding their shitty engineering.

I think you are only partly right.

In the jupiters the temperatures listed in that screenshot are the VRM temps, note that there are 8 seperate and different readings.

The temperatures listed in this screen are the ones from the sensor nowhere near the chip


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June 21, 2014, 05:03:47 PM
 #35536

Look at those temperatures  Shocked

I said that the temp monitoring components were far away from the chip because KNC probably knew there would be overheating issues.

https://bitcointalk.org/index.php?topic=170332.msg7181832;topicseen#msg7181832

Anyone who shot me down when I said that, please feel free to eat your words!  Tongue

 lol
Comes with a side of relish.

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June 21, 2014, 05:04:43 PM
 #35537

fuck
this neptune is crap
high temp on vrms

 Is there any way to use ram coolers on them or are they covered?

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xhomerx10
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June 21, 2014, 05:11:48 PM
 #35538

Day of Reckining 2: Neptune edition Cheesy


 That's the best depiction of KNC and the ineptune ever!

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ex uno plures


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June 21, 2014, 05:18:01 PM
 #35539

Maximum operating temperature of the BMR46x series is 125 C.

http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT146435&Lang=EN&HighestFree=Y

Elenelen, when you get a chance could you please read the numbers on the two black 8 pin packages near the side of the board and post them here ?
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June 21, 2014, 05:20:38 PM
 #35540

You are right. That is why those chips shown circled in red in the original post are not used for core temperature measurements.

What do you propose they are measuring way out there on the edge of the board?

What makes you think they are temperature sensors ? And why would there be 2 ? Let me guess … they are measuring each others temperature ? LOL

Lets get a read on the part number on the chip before we speculate further.
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