KnC news

[ultrix]

I think you are taking it too personally mate, Bitcoinorama just passes on information that he is given on the ground, in the KnC office where he is sitting.

He gets asked questions here and other places, he then goes to the people who are there and asks them, or is in meeting where things get brought up, he then relays information back to us here, all with good intentions.

To accuse him of making it up or lying or falsifying truths is just paranoid-conspiracy-theory-nutso.

Go through his forum posts with regards to the Corsair HX series PSUs.  He drew the conclusion from a sampling of two which were run from wall AC with no overcurrent protection and googling for the HX850 and motherboard problems, which as I stated you can find for every PSU.

I'm not saying he's lying, I'm saying he's not technical enough to make the statements he is with any validity and folks on this forum should listen to what KNC says officially.  Further KNC should acknowledge the lack of grounding as the source of problems.  I emailed them about this shortly after receiving my machines and have yet to get a response.

[1714038896]

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[1714038896]

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[btc_uzr]

New cgminer binary based on cgminer 3.8.2 up

http://ck.kolivas.org/apps/cgminer/kncminer/cgminer

Note that we may have tracked down at least one of the causes of the memory leak that leads to cgminer being killed for being out of memory and it involves frequently using the API. This means that if you are not actively monitoring its performance on the web interface, you are better off closing the web interface window for it to not repeatedly keep using it.

[Bitcoinorama]

Yo, 1200W Gold rated PSUs November orders FTW pls!

So KnC recommends 1200W PSU for the November batch ?

Why would you doubt me??

I doubt you because you made a non-technical correlation between two KNC customers and an unrelated forum post saying that the same brand had popped a motherboard.  News flash, every manufactured PSU on the planet has popped a motherboard, usually to no fault of its own.  Further the HX850 is a very stable PSU, we use them for 12V supplies in the lab and its what I have run on a dozen Jupiters for over a month.
One thing I did notice, which I overlooked in the product pictures during ordering is that KNC did not properly ground each ASIC board.   The PCI SIG clearly states that 6 pin auxiliary connectors are for 75W draw and 8 pin added two additional grounds, making it _SAFE_ to draw up to 150W.  Note: don't be a moron and read the spec incorrectly, the PCIe edge connector itself can deliver 75W, the 6 pin aux gives an _additional_ 75W, for a total of 150W.

The reason people have been popping boards is the combination of sloppy AC and the boards drawing too much power with not enough ground.  It has little to do with choice of power supply.  I altered my boards by scratching off a portion of the solder mask and soldering the additional two grounds.  Then I sampled the VRM output voltage for two hours.  End result less jitter.  And I'm running off of 208V synthesized AC from a large bank of Liebert equipment.

Long story short, if it didn't come straight from KNC's mouth, don't believe Orama's non-nonsensical, uneducated babbling.  KNC never recommended one brand over another, the only thing they indicated was a minimum capacity, which was 850W.   Until they post somehting on their website, ignore Orama.

Actually I sat in a room one Saturday with General Electric's Critical Power Specialist who flew in specifically to address the issue, i'd wager he knows what he's talking about and the HX has fried components at a with a statistically significant reason for concern according to other posts on the internet. It's not solely limited to KnC boards.

When the PSU is tripped and you have to replace the ATX lead, unlike with other brands, or even other ranges of Corsair PSUs, the HX series restarts with current apparently at full load. If the reason that caused the fail safe to cut the PSU still exists that component is then place under greater stress then beforehand, where as typically other PSUs ramp the current after being reset.

If you't care to believe what i'm saying, then fine. I didn't have to ask further questions in the first place. We could have just bluntly said do not use the Corsair HX PSU and be done with it. At the time the thread was so full of competitors trolls attempting to discredit the company for not checking every PSU on the planet despite purposefully recommending one in particular as it had been thoroughly tested.

I'm not attempting to be smarter than an armchair engineer, i'm relaying what I remember from a conversation with an industry expert.

In any case there were less than ten boards out of however many thousand made that suffered from this. It's a total non-issue, but to err on the side of caution we suggest you refrain from using that PSU.

[Syke]

Actually I sat in a room one Saturday with General Electric's Critical Power Specialist who flew in specifically to address the issue, i'd wager he knows what he's talking about and the HX has fried components at a with a statistically significant reason for concern according to other posts on the internet. It's not solely limited to KnC boards.

Let me get this straight. A GE engineer claimed the problem wasn't caused by GE hardware, but by some other company's product? Do you see why people would question the results of this "test"? How about you fly in a Corsair engineer and get his opinion?

[dropt]

[...] the HX series restarts with current apparently at full load. If the reason that caused the fail safe to cut the PSU still exists that component is then place under greater stress then beforehand, where as typically other PSUs ramp the current after being reset. [...]

You're almost as bad as dogie.

[dropt]

Actually I sat in a room one Saturday with General Electric's Critical Power Specialist who flew in specifically to address the issue, i'd wager he knows what he's talking about and the HX has fried components at a with a statistically significant reason for concern according to other posts on the internet. It's not solely limited to KnC boards.

Let me get this straight. A GE engineer claimed the problem wasn't caused by GE hardware, but by some other company's product? Do you see why people would question the results of this "test"? How about you fly in a Corsair engineer and get his opinion?

+1

[1l1l11ll1l]

Actually I sat in a room one Saturday with General Electric's Critical Power Specialist who flew in specifically to address the issue, i'd wager he knows what he's talking about and the HX has fried components at a with a statistically significant reason for concern according to other posts on the internet. It's not solely limited to KnC boards.

Let me get this straight. A GE engineer claimed the problem wasn't caused by GE hardware, but by some other company's product? Do you see why people would question the results of this "test"? How about you fly in a Corsair engineer and get his opinion?

+1

Because the Corsair engineers designed and built the HX line... 

[Bogart]

Actually I sat in a room one Saturday with General Electric's Critical Power Specialist who flew in specifically to address the issue, i'd wager he knows what he's talking about and the HX has fried components at a with a statistically significant reason for concern according to other posts on the internet. It's not solely limited to KnC boards.

Let me get this straight. A GE engineer claimed the problem wasn't caused by GE hardware, but by some other company's product? Do you see why people would question the results of this "test"? How about you fly in a Corsair engineer and get his opinion?

+1

Because the Corsair engineers designed and built the HX line... 

I think the question was rhetorical...

[CYPER]

Actually I sat in a room one Saturday with General Electric's Critical Power Specialist who flew in specifically to address the issue, i'd wager he knows what he's talking about and the HX has fried components at a with a statistically significant reason for concern according to other posts on the internet. It's not solely limited to KnC boards.

Let me get this straight. A GE engineer claimed the problem wasn't caused by GE hardware, but by some other company's product? Do you see why people would question the results of this "test"? How about you fly in a Corsair engineer and get his opinion?

Exactly my thought.

[Bitcoinorama]

[...] the HX series restarts with current apparently at full load. If the reason that caused the fail safe to cut the PSU still exists that component is then place under greater stress then beforehand, where as typically other PSUs ramp the current after being reset. [...]

You're almost as bad as dogie.

Please. No.

Look i'm reiterating what i was told. Do not shoot the messenger. I didn't have to ask. I did it because people were concerned and wanted to know. This isn't my armchair engineering is better than yours, academically trained I'm a design engineer and if I design an electrical, or electronic device I'd consult an expert in that field. In this case this is precisely what I did as, and when the opportunity presented. So quit the abuse, or I quit bothering to share. The fact is unless we can differentiate between the start up characteristics of each individual PSU on the market after they have all been tripped - and bear in mind in every case they had ALL had their fail-safes tripped and required restarts -then we have no scientific ground for recommending one power supply over another. The only thing we do have to go on is the 'long term reliability proving exercise' w.r.t. the Coolermaster V850 being used throughout the entire hosting facility and working faultlessly the entire time. Thus it has the most assured recommendation as the PSU to use. KnC were actually going to buy the HX850, but couldn't secure enough of a volume in time, and taht appears to have purely been by good fortune.

In any case the number of boards we had fail in this manner is insignificant, less than 10 boards out of the thousands manufactured and in the wild, so this is a mute point, but based upon the statistical significance of the corsair hx850's involvement in the occurrences, and the fact the PSU is known to behave in the manner described, it'd be wise to consider avoiding that for a PSU for another known to behave faultlessly...

[Biffa]

Actually I sat in a room one Saturday with General Electric's Critical Power Specialist who flew in specifically to address the issue, i'd wager he knows what he's talking about and the HX has fried components at a with a statistically significant reason for concern according to other posts on the internet. It's not solely limited to KnC boards.

Let me get this straight. A GE engineer claimed the problem wasn't caused by GE hardware, but by some other company's product? Do you see why people would question the results of this "test"? How about you fly in a Corsair engineer and get his opinion?

Because Corsair don't have any "engineers" they don't make their own PSU's they get other companies to make them. So perhaps Channel Well who make the Corsair HX850 Gold, couldn't/wouldn't send an engineer over to a small company who aren't their customer in the first place?

Come on guys, as I said before Bitcoinorama is just the conduit of information back and forth, as he said don't shoot the messenger.

Bitcoinorama, on the other hand, don't take it personally if people question the process, just pass the information back to the team and then wait for more feedback. Don't bite back, or even worse feed trolls.

[Gator-hex]

The only news I care about is.. WHEN IS THE NEXT BATCH FOR SALE! 

[Biffa]

The only news I care about is.. WHEN IS THE NEXT BATCH FOR SALE! 

I'd hazard to guess, January at the earliest.

You could probably pinpoint it more accurately if you knew when any of the competition will start shipping.

Cointerra and Hashfast appear to be just vaporware at the moment, which I think is wierd because I felt sure they would deliver.

[btc_uzr]

I don't know whether to laugh or cry, two modules shipped to me, one left Sweden, the other says "The package was left in a UPS facility.". They forgot to put it on the plane I guess.

Edit : Now both are stuck and never left.

Same for me

THE PACKAGE WAS LEFT IN A UPS FACILITY

Great  

EXCEPTION

19.11.2013    0:08    The package was left in a UPS facility.

I love UPS so much..

-------------
*edit*
RESOLVED

All 3 of my shipments show this.

I was also emailed an exception notification saying "this notice alerts you delivery of the following shipment has been rescheduled." and "Exception Reason:    THE PACKAGE WAS LEFT IN A UPS FACILITY"

Same here, FWIW.

[volosator]

same here. I called UPS and asked them WTF.
Somebody left the facility and packages got forgotten.
A guy on the phone said it's possible that it will get delivered on schedule.

[1l1l11ll1l]

Actually I sat in a room one Saturday with General Electric's Critical Power Specialist who flew in specifically to address the issue, i'd wager he knows what he's talking about and the HX has fried components at a with a statistically significant reason for concern according to other posts on the internet. It's not solely limited to KnC boards.

Let me get this straight. A GE engineer claimed the problem wasn't caused by GE hardware, but by some other company's product? Do you see why people would question the results of this "test"? How about you fly in a Corsair engineer and get his opinion?

+1

Because the Corsair engineers designed and built the HX line... 

I think the question was rhetorical...

Didn't know I needed /Sarcasm

See Biffa's comment

[1l1l11ll1l]

Actually I sat in a room one Saturday with General Electric's Critical Power Specialist who flew in specifically to address the issue, i'd wager he knows what he's talking about and the HX has fried components at a with a statistically significant reason for concern according to other posts on the internet. It's not solely limited to KnC boards.

Let me get this straight. A GE engineer claimed the problem wasn't caused by GE hardware, but by some other company's product? Do you see why people would question the results of this "test"? How about you fly in a Corsair engineer and get his opinion?

Because Corsair don't have any "engineers" they don't make their own PSU's they get other companies to make them. So perhaps Channel Well who make the Corsair HX850 Gold, couldn't/wouldn't send an engineer over to a small company who aren't their customer in the first place?

Come on guys, as I said before Bitcoinorama is just the conduit of information back and forth, as he said don't shoot the messenger.

Bitcoinorama, on the other hand, don't take it personally if people question the process, just pass the information back to the team and then wait for more feedback. Don't bite back, or even worse feed trolls.

It's so the Corsair Engineers can ensure the Corsair logo is straight.

[btc_uzr]

Well, here's a binary which should hopefully address the known memory leak from cgminer itself based on the latest git master 009511c995458c00a5f46426c8e80ddb94c20cbb.

http://ck.kolivas.org/apps/cgminer/kncminer/cgminer

[HugPuddle]

You think KnC is reliable?
We are in the market for an asic soon.

[1l1l11ll1l]

You think KnC is reliable?
We are in the market for an asic soon.

I'm reliably hashing away on their hardware at this moment, however they are completely sold out.