KNC just posted pics of their case, PCB samples coming next week \o/

[jimmy3dita]

Guys chill down, 5v is for the interface (Raspberry or any other SOC thing). In the other thread ppl received an answer about SSH access and web GUI, so probably there is a small Linux thingie between the Ethernet interface and the asics themselves.

The big part will be driven from 12 volts, with mobo and pci express connectors. It can't be anything else, there's no reason to project something with custom PSU specs without including it in the product!

[1714616986]

1714616986

[af_newbie]

Why 5V external power?  Most ATX PSU are designed to deliver most of their power on the 12V rail(s).

+1

Someone did not think this through.  It should have multiple banks of PCI-e 8 pin connectors, run in parallel.

And these people will deliver 28nm ASIC?
Hard to believe.

The small slot at the front is to accommodate the multiple 5V power connections from the external PSU

Whatever.  5v to supply 1000W is poor choice.  Even with PCI-e 8 pin is rated for what? 150W?  They would need 8 of these to under run their system.

End of story.  Not sure why you even try to defend this.

[cypherdoc]

Note that those (like most industrial PSUs), have screw terminal connections. Not consumer friendly.

100A at 5V is just 500W. And its input is 12V so we still have the multiple stepdown problem with efficiency.

KnCminer terms and conditions specify that they are selling a product for business, not end users. So that could justify why there is necessary a PSU not so "consumer friendly".

I will Google more to see if I can discover a 5V 100A PSU without connectors.

that would not be a sufficient excuse.  all other asic manufacturers have gone with 12V.

[DeathAndTaxes]

Anyone send an email for clarification instead of speculating on the speculation?

I'd do it myself but I'd prefer someone that is more knowledgeable about electrical engineering to write it up.

Not sure the best email but it is a relatively simple question.  Just send this (or link to the thread):

The news released today (https://www.kncminer.com/news/news-28) provides some details on the case.  Included in the update was the statement, "The small slot at the front is to accommodate the multiple 5V power connections from the external PSU".  The use of 5VDC is unusual given the power requirements of the units.  A PSU capable of high amperage at 5V is almost certainly going to be more expensive and/or less efficient than an ATX PSU capable of the same wattage at 12VDC.

Can you confirm the input voltage is indeed 5VDC?  If this is a typo can you provide a fix at the link above?

[DPoS]

Whatever.  5v to supply 1000W is poor choice.  Even with PCI-e 8 pin is rated for what? 150W?  They would need 8 of these to under run their system.

End of story.  Not sure why you even try to defend this.

do you mean end of your FUD?

Kepco makes them in 150 or 300 watt for 5v..   sure the amps are silly and we'd all be calling an electrician

http://www.kepcopower.com/hsf.htm

[Kouye]

The small slot at the front is to accommodate one 5V and multiple 12V power connections from the external PSU as well as the RJ45 for Ethernet and a USB

They changed it, apparently (didn't see the initial news).

[DPoS]

The small slot at the front is to accommodate one 5V and multiple 12V power connections from the external PSU as well as the RJ45 for Ethernet and a USB

They changed it, apparently (didn't see the initial news).

damn it was more fun messing with people before..

to anyone new to KNC, you will find that English and running a webpage are not their strong suits.   I learned a while back to not overreact to anything they first put up on their site.


hopefully everyone will chill out, but no doubt when they post the PCBs more errors will happen, and more screaming will come!!

[DeathAndTaxes]

The small slot at the front is to accommodate one 5V and multiple 12V power connections from the external PSU as well as the RJ45 for Ethernet and a USB

They changed it, apparently (didn't see the initial news).

Thanks.  I wonder what the 5VDC input is for?  I would imagine the bulk of the load is going to be on the 12VDC rails (which make sense) so it is now just more of a curiosity.

[mufa23]

"But it's just a box of fans!"

Pull out your quarters and get ready for a deja vu guys. Micon will be here any second...

[kevinm]

Its been said before but it probably needs saying again,

5V is for the RasPi
12V is for the mainboard

cheers,
kev

[Bitcoinorama]

Its been said before but it probably needs saying again,

5V is for the RasPi
12V is for the mainboard

cheers,
kev

+1

Well ORSoC's own made Linux based equiv. of the R Pi.

[greenbtc]

Its been said before but it probably needs saying again,

5V is for the RasPi
12V is for the mainboard

cheers,
kev

+1

Well ORSoC's own made Linux based equiv. of the R Pi.

I seriously doubt they are going to "make their own RPi."

They might buy RPi's and slap their logo on them, but I don't think they are making even a "custom" RPi for this--if so, where is the information in regards to them stating this?

[Bitcoinorama]

Its been said before but it probably needs saying again,

5V is for the RasPi
12V is for the mainboard

cheers,
kev

+1

Well ORSoC's own made Linux based equiv. of the R Pi.

I seriously doubt they are going to "make their own RPi."

They might buy RPi's and slap their logo on them, but I don't think they are making even a "custom" RPi for this--if so, where is the information in regards to them stating this?

Watch the video where Marcus explains die size at the Open Day.  I believe he's holding one in his hand there...

http://youtu.be/by-je8XRCdY

[greenbtc]

Its been said before but it probably needs saying again,

5V is for the RasPi
12V is for the mainboard

cheers,
kev

+1

Well ORSoC's own made Linux based equiv. of the R Pi.

I seriously doubt they are going to "make their own RPi."

They might buy RPi's and slap their logo on them, but I don't think they are making even a "custom" RPi for this--if so, where is the information in regards to them stating this?

Watch the video where Marcus explains die size at the Open Day.  I believe he's holding one in his hand there...

http://youtu.be/by-je8XRCdY

I'll have to wait to watch it for audio as I'm in a meeting right now, but I did notice in this video: http://www.youtube.com/watch?v=BgNPIY9L8s4

In the very first few seconds, to the left of the FPGA, is what looks to be one of the HSF's they just posted in their news article. It is promptly removed from the table shortly after the video starts [about 35 seconds in]. I'm not trying to start a conspiracy theory here as I'm sure they just moved it to get it out of the way, but it is interesting nonetheless.

Bitcoinorama, since you are the uploader of this video, just curious--were you there at the open day?

[DPoS]

I'd prefer mine to look like a trashcan, no one would ever steal it!

 

[Loredo]

I'm not trying to start a conspiracy theory here as I'm sure they just moved it to get it out of the way, but it is interesting nonetheless.

Bitcoinorama, since you are the uploader of this video, just curious--were you there at the open day?

Of course he was.  And if that doesn't give you room for another conspiracy theory you aren't trying to start, I don't what could.

[k9quaint]

https://www.kncminer.com/userfiles/image/case3small.png


those cases will not survive shipment.

wtf is this lol.

it is ugly, not durable, looking cheap and disgusting.

terrible design.

it is such a shame...

These are also terrible cases and yet 600GH/s 

[DeathAndTaxes]

Exactly.  The "prettiness" of the case has to be about the stupidest complaint for any industrial device.  Personally I would be happy if any ASIC manufacturer just delivered boards.  A board in a ghetto rack hashing today is worth a LOT more than a board is some pretty backordered case which will ship in "two weeks".

[dogie]

Wait wait wait wait wait... that's they're Jupiter cooling? ROFLMAO. Those heatsinks are rated for peak of ~140W, not 250. And they think they can exhaust 1kw of heat with 2 standard 120mm fans?

My 1x250mm 1x200mm, 5x140mm and 2x120mm case was struggling with 800-900W. I told you those thermal simulations were really, really wrong.

Sorry to disappoint you guys, KNC lives in the clouds.

[Bitcoinorama]

those cases will not survive shipment.

wtf is this lol.

it is ugly, not durable, looking cheap and disgusting.

terrible design.

it is such a shame...

LOL,

go buy a BFL product. Decent Design but you'll never see it.

I don't thing any sane person cares what the case looks like as long as the device hashes. I'd prefer mine to look like a trashcan, no one would ever steal it!

Yet this is an example of one of the rarest and endangered butterflies on earth;