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Author Topic: Swedish ASIC miner company kncminer.com  (Read 3045499 times)
jjwhitehead
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August 23, 2014, 09:08:34 PM
 #37361

Am I the only one who found this http://captiongenerator.com/19941/KNC-Board-Meeting-About-GAW-VaultBreakers hilarious?  Grin Cheesy

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August 24, 2014, 04:40:19 PM
Last edit: August 24, 2014, 04:56:01 PM by RawDog
 #37362

It's funny, ....

I'll tell you what is funny, these guys tried to live under the banner of "Over-Engineered" and then produced this garbage.  What a joke.  Computing the maximum load on a connector is not exactly rocket science.  The embarrassment must be excruciating.





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August 24, 2014, 06:45:36 PM
 #37363

They obviously were too cheap to build new boards to withstand the extra power flow caused by the 20nm chips. They even use the same PCB boards for the Neptune as on the Jupiter.. For a company that has a revenue of 100+million, they should be ashamed of themselves. The least they could do is acknowledge the problem  Roll Eyes

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August 24, 2014, 08:04:47 PM
 #37364

they should be ashamed of themselves. The least they could do is acknowledge the problem  Roll Eyes

That would mean they may be on the hook to fix it.  By just saying it is 'by design' they can keep going with substandard engineering and no one will be on the hook except the miner with RMAs pending.

Tired of substandard power distribution in your ASIC setup???   Chris' Custom Cablez will get you sorted out right!  No job too hard so PM me for a quote
Check my products or ask a question here: https://bitcointalk.org/index.php?topic=74397.0
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August 24, 2014, 11:36:37 PM
 #37365

they have no incentive to produce working miners.  Every successful product that gets accepted is just in competition with their datacenter
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August 25, 2014, 12:29:59 AM
 #37366

So what's the latest on connecting PC power supplies to the Neptune's, what is the general consensuses on what we use?

My Neptune was shipped yesterday and will arrive on Monday so I need to get a move on with respect to power. Smiley

Thanks,

I think people are recommending the 1300W EVGA, which I believe can handle 3 Neptune modules.

I use 3x Corsair AX1200i for my Neptune, which I'm planning to expand to 5 of them for two Neptunes (when I get my bonus Neppy), i.e. one AX1200i powers two Neptune modules.

There is a catch with the AX1200i.  You need to have PCIe 2-to-1 splitters to use them with the Neptune because the AX1200i has Over-Current Protection (OCP) which kicks in and shuts the PSU down. I blame this on KnC, not the PSU, as the Neptune draws more power across a single PCIe connector than the specification is designed for (that's why the safety features of the AX1200i kick in). Putting the PCIe 2-to-1 splitter cables on means that two PCIe ports on the PSU feed the single PCIe port on the Neptune module, so each PSU PCIe port is supplying power within the PCI specification (and doesn't trip the OCP).

I got my PCIe 2-to-1 cables from Cablez, and I'm very happy with the product (see https://bitcointalk.org/index.php?topic=170332.msg7579936#msg7579936). I've been running them 24x7 since July 11th with no trouble (they don't get warm).

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August 25, 2014, 12:42:17 AM
 #37367


how about ditching those pci-e and soldering directly to the pcb?? if that piece cant handle the load just get rid of it imo...
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August 25, 2014, 01:22:56 AM
 #37368

they have no incentive to produce working miners.  Every successful product that gets accepted is just in competition with their datacenter

either thou this would screw me, I actually hope btc diff. rate skyrockets just to screw them

Dreams of cyprto solving everything is slowly slipping away...Replaced by scams/hacks Sad
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August 25, 2014, 08:14:11 AM
 #37369

they have no incentive to produce working miners.  Every successful product that gets accepted is just in competition with their datacenter

either thou this would screw me, I actually hope btc diff. rate skyrockets just to screw them

I see you, as you wish, the diff will ramp 35% next time, amen.

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August 25, 2014, 10:38:49 AM
Last edit: August 25, 2014, 11:04:33 AM by user27
 #37370

I think people are recommending the 1300W EVGA, which I believe can handle 3 Neptune modules.

I use 3x Corsair AX1200i for my Neptune, which I'm planning to expand to 5 of them for two Neptunes (when I get my bonus Neppy), i.e. one AX1200i powers two Neptune modules.

There is a catch with the AX1200i.  You need to have PCIe 2-to-1 splitters to use them with the Neptune because the AX1200i has Over-Current Protection (OCP) which kicks in and shuts the PSU down. I blame this on KnC, not the PSU, as the Neptune draws more power across a single PCIe connector than the specification is designed for (that's why the safety features of the AX1200i kick in). Putting the PCIe 2-to-1 splitter cables on means that two PCIe ports on the PSU feed the single PCIe port on the Neptune module, so each PSU PCIe port is supplying power within the PCI specification (and doesn't trip the OCP).

I got my PCIe 2-to-1 cables from Cablez, and I'm very happy with the product (see https://bitcointalk.org/index.php?topic=170332.msg7579936#msg7579936). I've been running them 24x7 since July 11th with no trouble (they don't get warm).

Same here; will be rocking 5xAX1200i if KfC ever dispatch bonus miners.

KfC asked me to send the burnt out cubes back to them at my expense so they can inspect them and decide if they should RMA. That's not an acceptable level of service right? They are essentially saying I have to solder new power sockets myself and hope the cubes still work or suffer further down time and shipping costs?

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August 25, 2014, 11:55:30 AM
 #37371

glad you are all seeing the light

shame it took you all a year to catch up

rape just ain't what it used to be

knc today isnt the same as knc one year ago

jupiter batch #1 and #2 were nearly perfect. especially batch#2 made those buyers a ton of bitcoins. rma were quick and without hassle.

their attitude changed in january when they decided not to sell those extra chips they had and go instead for datorhall.
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August 25, 2014, 12:17:11 PM
 #37372

Today on KNC's forum :
Quote
We managed to ship a few hundred miners last week. Not all of these customers that have had their miners shipped will be as vocal as the select few on this forum.
Source

My lucky BTC address : 1LoTTerY3WYbGxVRHvh8oDudDdTxFvvqWF
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August 25, 2014, 02:33:33 PM
 #37373


how about ditching those pci-e and soldering directly to the pcb?? if that piece cant handle the load just get rid of it imo...

Thats what I did on day 1.
http://i.imgur.com/3pVt5ae.jpg
I tested them first on the PCIe then voided warranty.

BTW 2 x 12AWG in each direction still gets warm.
Will replace 2x12AWG with 3x12AWG next maint pitstop.
My plan is to use 2 x 12/3 extension cords for the wire.
(50% more copper plus better flexability)


YMMV
Smiley

EDIT
I use two DPS-2000BB per Neptune @ USD $50.00 each.
(4kW available but only runnin @ 50% of rated output for better efficiency)
http://i.imgur.com/epKz23R.jpg

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August 25, 2014, 03:43:58 PM
 #37374


how about ditching those pci-e and soldering directly to the pcb?? if that piece cant handle the load just get rid of it imo...

Thats what I did on day 1.
http://i.imgur.com/3pVt5ae.jpg
I tested them first on the PCIe then voided warranty.

BTW 2 x 12AWG in each direction still gets warm.
Will replace 2x12AWG with 3x12AWG next maint pitstop.
My plan is to use 2 x 12/3 extension cords for the wire.
(50% more copper plus better flexability)


YMMV
Smiley

EDIT
I use two DPS-2000BB per Neptune @ USD $50.00 each.
(4kW available but only runnin @ 50% of rated output for better efficiency)
http://i.imgur.com/epKz23R.jpg

tolip_wen, you're work is truly extraordinary. I see the pipes - are you water cooling the chips, too?
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August 25, 2014, 03:50:24 PM
 #37375


nice job you did there!
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August 25, 2014, 04:45:11 PM
 #37376


how about ditching those pci-e and soldering directly to the pcb?? if that piece cant handle the load just get rid of it imo...

Thats what I did on day 1.
http://i.imgur.com/3pVt5ae.jpg
I tested them first on the PCIe then voided warranty.

BTW 2 x 12AWG in each direction still gets warm.
Will replace 2x12AWG with 3x12AWG next maint pitstop.
My plan is to use 2 x 12/3 extension cords for the wire.
(50% more copper plus better flexability)


YMMV
Smiley

EDIT
I use two DPS-2000BB per Neptune @ USD $50.00 each.
(4kW available but only runnin @ 50% of rated output for better efficiency)
http://i.imgur.com/epKz23R.jpg

tolip_wen, you're work is truly extraordinary. I see the pipes - are you water cooling the chips, too?

yes, rev 1.0 of my prototyping rats nest.
http://i.imgur.com/9T8lRc2.jpg

YMMV
Smiley

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August 25, 2014, 05:42:52 PM
 #37377

I requested refund before they started shipping which was refused. The fire hazard miner was then delivered weeks late. RMA was refused on dead dies on the grounds that the remaining dies were running slightly over 3TH. To top it all off this is now 2/5 cubes burnt out with 16AWG cables.

KnC have two arguments in this regard;
1. Low quality cables
2. Improperly seated cables i.e. not all six pins making contact

Real world;
1. Clearly not a low quality cable with 16AWG; it's a design issue where each 50w pin is expected to handle >100w
2. As shown all three of the positive pins burnt, not just two, as it would if one of them wasn't seated properly

I have been lucky so far in that my house hasn't burnt down yet.

If *everybody* could post this link on the KnC fourms *every day* that would be good, thanks. https://bitcointalk.org/index.php?topic=170332.msg8498317#msg8498317

...and now for lots of nice high res photos:


Since KnC didnt bother to respond to me, let alone RMA, last time this happened; here's some warranty voiding nudes:

(nice to see they wrote "2014 KnCMiner" right alongside the socket so there is no confusion)

u27

So sorry to see your drama with these bastards - but welcome to my life a la september 2013.

the ONLY good thing i can see here is you dont have bitcoinorama & phonie X calling you a liar, stupid, retarded & greedy etc.

i got the exact same treatment that you got from KnC - which was annoying and upsetting, but those two cunts made it much, much worse with their feigned ignorance & malice.hence my year long hatred towards them and their blind fanbase of dweebs.

sorry i cant be of more help and i hope you can frenkenfix it so you at least get some return!!

let this be the lesson learnt - fuck a preorder - let the preorder winners revel in their brilliance - cos the risk vs reward is wayyyyyyyyyyyy out of whack.




Piss off... Show us where I ever accused someone lying about burnt shit.
You are a true asshole, congratz.
I never did anything besides help folks in here.  
BTW... If you had used the contact paste I recommended, those burnt pci connections would have never happened, period.


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August 25, 2014, 05:44:24 PM
 #37378


how about ditching those pci-e and soldering directly to the pcb?? if that piece cant handle the load just get rid of it imo...
That's actually a great idea imho


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August 25, 2014, 07:31:31 PM
 #37379

yes, rev 1.0 of my prototyping rats nest.
http://i.imgur.com/9T8lRc2.jpg

YMMV
Smiley

Cooling still looks great; not so sure about the PSU setup. Those require external cooling and will just keep pumping out 12v after a possible short which is a major fire risk. They are designed for server rooms with fire suppression; not residential dwellings.

What efficiency are you getting on them now?

u27

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August 25, 2014, 09:55:49 PM
 #37380

Where did KnC ever say they'd only mine 5% of the equipment they sold?  Did they really say this?  I can't see anything which says that/
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