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Author Topic: Swedish ASIC miner company kncminer.com  (Read 3013000 times)
klee
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August 22, 2013, 01:28:50 PM
 #6801

Yep still heard nothing from them.
So I guess main line cgminer support wont be happening ...
Already looking for a freebie, again, Kano?

(I am reading up on KNC. Impressive developments so far. Nothing to complain about as of yet.)
You are so jealous!
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minerpumpkin
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August 22, 2013, 01:29:31 PM
 #6802

BUT on the other hand, they didn't try to get at my money like a potential scam most likely would have....so all in all postive.

Answers? Only 15 bucks upfront!

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August 22, 2013, 01:34:33 PM
 #6803

Yep still heard nothing from them.
So I guess main line cgminer support wont be happening ...
Already looking for a freebie, again, Kano?

(I am reading up on KNC. Impressive developments so far. Nothing to complain about as of yet.)

Can't really fault him for that - it's nearly impossible to support hardware without having it physically, unless there is extremely detailed documentation available, then it become just "very difficult."
DeathAndTaxes
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August 22, 2013, 01:34:51 PM
 #6804

This is needed  Wink



Not for most PSU.  The quick and easy check is to look at the PCIe power cable.  Does it have two connectors one one "string"?  If so then using a splitter doesn't really do anything

Code:
           *
PSU ------------------- PCIE connector 1     <----- use only this connector
                     |
                     ---- PCIE connector 2            <----- don't use this connector, use another wire for a 2nd connection (wrap me with electrical tape)

The connector can handle more current than is needed so it is just a question of "can the PSU push enough current to the connector".

You could use a splitter to connect the connector 1 & 2 in diagram above but the same amount of current is flowing through the cable regardless.  If a board pulls 20A then at the point marked * it will have 20A of current regardless of if you are using a splitter or not.

So for four connections it would be something like this

Code:
|---|
|   |------------------- PCIE connector 1a     <----- Connection #1
|   |               |
|   |               ---- PCIE connector 1b     <----- Don't use me
|   |
|   |------------------- PCIE connector 2a     <----- Connection #2
|   |               |
|   |               ---- PCIE connector 2b     <----- Don't use me
| P |
| S |------------------- PCIE connector 3a     <----- Connection #3
| U |               |
|   |               ---- PCIE connector 3b     <----- Don't use me
|   |
|   |------------------- PCIE connector 4a     <----- Connection #4
|   |               |
|   |               ---- PCIE connector 4b     <----- Don't use me
|---|

Each set of wires is carrying no more than 1/4th of the total load. So 1000W / 4 =  250W / 12V = 20.83A / 3 conductors = 6.94A per conductor which is below the limit for both the wire and the connector. 
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August 22, 2013, 02:26:09 PM
 #6805

^^^^^^^^^^^^^^^^^^

This, this and more this!!!  Please be aware of which connectors you are using and use only separate 'lines'.

Too much current through those paltry 18AWG wires will burn them out!!!

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
Bitcoinorama
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August 22, 2013, 02:37:15 PM
 #6806

^^^^^^^^^^^^^^^^^^

This, this and more this!!!  Please be aware of which connectors you are using and use only separate 'lines'.

Too much current through those paltry 18AWG wires will burn them out!!!

With a name like 'Cablez', I'd presume you're the expert! Wink

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geraFoerra
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August 22, 2013, 02:40:10 PM
 #6807

^^^^^^^^^^^^^^^^^^

This, this and more this!!!  Please be aware of which connectors you are using and use only separate 'lines'.

Too much current through those paltry 18AWG wires will burn them out!!!

With a name like 'Cablez', I'd presume you're the expert! Wink

 Grin

Seems he really is
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August 22, 2013, 03:13:08 PM
 #6808

Have you checked this thread? Thousands of $ for a few weekly ad spots on this forum.

https://bitcointalk.org/index.php?topic=273242.20

Honestly - I don't like it too much.

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August 22, 2013, 03:16:36 PM
 #6809

Have you checked this thread? Thousands of $ for a few weekly ad spots on this forum.

https://bitcointalk.org/index.php?topic=273242.20

Honestly - I don't like it too much.

10 slots at 15BTC each (will reach it probably) = 18K USD
I wish I was the owner if this forum  Grin

If this post helped you and you feel generous you know what to do: 1P9tXFy9bVgzrfPGeV7F8np26ZtFdCCWvz
greenbtc
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August 22, 2013, 03:24:13 PM
 #6810

Have you checked this thread? Thousands of $ for a few weekly ad spots on this forum.

https://bitcointalk.org/index.php?topic=273242.20

Honestly - I don't like it too much.

10 slots at 15BTC each (will reach it probably) = 18K USD
I wish I was the owner if this forum  Grin

Don't worry, theymos will tell you it costs at least 10k/month to host this forum. (lol)
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August 22, 2013, 03:36:45 PM
 #6811

Have you checked this thread? Thousands of $ for a few weekly ad spots on this forum.

https://bitcointalk.org/index.php?topic=273242.20

Honestly - I don't like it too much.

10 slots at 15BTC each (will reach it probably) = 18K USD
I wish I was the owner if this forum  Grin

Don't worry, theymos will tell you it costs at least 10k/month to host this forum. (lol)

Don't worry, the projected US$660,000 per year in ad sales will cover that.  The words MONEY GRUBBING and DISCRIMINATION comes to mind. The words COMMUNITY doesn't.

Sad

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August 22, 2013, 03:38:11 PM
 #6812

Have you checked this thread? Thousands of $ for a few weekly ad spots on this forum.

https://bitcointalk.org/index.php?topic=273242.20

Honestly - I don't like it too much.

Anyone know how much the guy offering to triple your BTC paid for his slots?
canth
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August 22, 2013, 04:12:53 PM
 #6813

Have you checked this thread? Thousands of $ for a few weekly ad spots on this forum.

https://bitcointalk.org/index.php?topic=273242.20

Honestly - I don't like it too much.

What exactly is it that you don't like? They probably took in well over $10m so far in orders - even they spent $100K on advertising, that couldn't terribly affect the customer price per unit - probably less than $20/unit.

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August 22, 2013, 04:16:08 PM
 #6814

Have you checked this thread? Thousands of $ for a few weekly ad spots on this forum.

https://bitcointalk.org/index.php?topic=273242.20

Honestly - I don't like it too much.

What exactly is it that you don't like? They probably took in well over $10m so far in orders - even they spent $100K on advertising, that couldn't terribly affect the customer price per unit - probably less than $20/unit.

I don't like too much seeing pre-order based companies spending big amounts of their customer's money (which have not received any device yet) to suck in more pre-order customers. It's not illegal, its not unethical unless there are huge delays, as per BFL, but honestly I don't like it.

Plus, +$1,500 for a weekly slot on this forum is simply retarded.

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August 22, 2013, 04:47:16 PM
 #6815

No doubt Asics are going to get cheap as hell.  It's just like the microwave, cell phone, and plasma tv all over again.

So any word on script for these beasts?  Probably not.

Edit:  Just read last page, nevermind.

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August 22, 2013, 06:18:19 PM
 #6816

So what is the bottom line with this company?  Does everyone feel they are going to turn into another BFL debacle?
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August 22, 2013, 06:20:44 PM
 #6817

So what is the bottom line with this company?  Does everyone feel they are going to turn into another BFL debacle?

no

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August 22, 2013, 06:25:11 PM
 #6818

I've spoken personally to a couple people now about their dealings with TerraHash as well and it's not favorable at all?  What is going to happen, people like Intel and Samsung coming in and crushing all the small time players?  I am just looking for my small piece of the pie here.
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August 22, 2013, 06:27:50 PM
 #6819

I've spoken personally to a couple people now about their dealings with TerraHash as well and it's not favorable at all?  What is going to happen, people like Intel and Samsung coming in and crushing all the small time players?  I am just looking for my small piece of the pie here.

Just buy bitcoins then. Or buy from a company that has stock in hand already, like bitfury. If you want to take a risk and invest into a pre-order I would suggest going with KnC. Also make sure you check out http://mining.thegenesisblock.com/

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August 22, 2013, 07:34:44 PM
 #6820

http://www.lineagepower.com/oem/pdf/MDT040A0X.pdf

Max efficiency at 0.6V out w/ 12V input - 84%
Max efficiency at 1.2V out w/ 12V input - 90%
Max efficiency at 1.8V out w/ 12V input - 92%

And the whopper, 1.5ms typical rise in output current from 10% to 90%.  Not very responsive for such a small converter, esp for switching at 400khz.

And did you see that ripple voltage? !!!
Oh my gosh, between 8-20mVp-p at 1 volt!

It's too bad they couldn't use 2 of them at once.
It's too bad they don't have a SYNC function.
It's too bad the SYNC function couldn't be programmed to reduce ripple by interleaving.

If only there were such things.

Oh wait.....
They do have those functions.

Gee I wonder if the KnC guys noticed or it was just coinkydink

It's too bad the pdf you linked didn't include examples of how to deal with the known limitations.
Oh wait.....

All DC/DC converters have limitations.
The efficiency is not bad. It's 80+ and that's DC/DC at 1/12th supply V.

An engineer could design better given enough time and money.

But (there's always a 'but')

Not if you wanted off the shelf _and_ wanted some headroom within the $$$/time budget.
IMneverHO

25% of possible total supply voltage range for the device seems quite flexible to me.
They have V to spare if their thermal budget has any room left.

I almost forgot.
"And the whopper, 1.5ms typical rise in output current from 10% to 90%."

It's too bad they couldn't place caps around the ASIC to compensate.
Oh wait.....

Are you some kind of inductorologist with mad skillz?
I didn't notice your suggestion for a better choice.
Please include delivery time and cost savings if you do venture an opinion.

To me their DC/DC supply fits exactly their 'margin on top of margin' claim.
Thx for the link!

Time will tell Wink

Coincidentally, I am designing a 3 phase DC/DC power circuit that currently delivers 0.84V @80A w/ ~92% efficiency based around the LTC-3829, tunable @5mV increments, powered by a 12V ATX supply (+-10 nominal).  Each phases lower FET dissipates a maximum of 0.75W, which is the highest of any single component in the design.   I've got roughly 20 hours into the design.  Further, synching does not eliminate ripple.   In ideal situtations yes, however that's why any spice simulator worth using allows sweeps of tolerance ranges.  The reality is that the load is not uniform across the phases.  I'm not even going to address the rise time and caps comment as its obvious you have little experience with this type of circuitry.

The reason I mention the inefficiencies of their supply choice are that the poor choice of external PSU was due to "lower heat" then a week later post that they are dumping an extra 100W of heat into the chassis, which about what a good PSU would do (80% vs 90+% designs that are readily available).  All it takes is looking at any motherboard, gpu, or other high amperage, low volt device and making a few emails.
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