Bitcoin Forum
November 20, 2017, 07:40:04 PM *
News: Latest stable version of Bitcoin Core: 0.15.1  [Torrent].
 
   Home   Help Search Donate Login Register  
Pages: « 1 ... 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 [453] 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 ... 2138 »
  Print  
Author Topic: Swedish ASIC miner company kncminer.com  (Read 3008895 times)
DeathAndTaxes
Donator
Legendary
*
Offline Offline

Activity: 1218


Gerald Davis


View Profile
September 10, 2013, 08:05:17 PM
 #9041



I stand utterly corrected.
1511206804
Hero Member
*
Offline Offline

Posts: 1511206804

View Profile Personal Message (Offline)

Ignore
1511206804
Reply with quote  #2

1511206804
Report to moderator
1511206804
Hero Member
*
Offline Offline

Posts: 1511206804

View Profile Personal Message (Offline)

Ignore
1511206804
Reply with quote  #2

1511206804
Report to moderator
1511206804
Hero Member
*
Offline Offline

Posts: 1511206804

View Profile Personal Message (Offline)

Ignore
1511206804
Reply with quote  #2

1511206804
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1511206804
Hero Member
*
Offline Offline

Posts: 1511206804

View Profile Personal Message (Offline)

Ignore
1511206804
Reply with quote  #2

1511206804
Report to moderator
1511206804
Hero Member
*
Offline Offline

Posts: 1511206804

View Profile Personal Message (Offline)

Ignore
1511206804
Reply with quote  #2

1511206804
Report to moderator
dropt
Legendary
*
Offline Offline

Activity: 1512



View Profile
September 10, 2013, 08:10:52 PM
 #9042

Great eye.  You [both] win three internets and a kitty.  Amazing.

F'ing SWEET.  Where do I collect?
mbbc
Jr. Member
*
Offline Offline

Activity: 38


View Profile
September 10, 2013, 08:13:24 PM
 #9043

Great eye.  You [both] win three internets and a kitty.  Amazing.

Yay!  Grin
vesperwillow
Hero Member
*****
Offline Offline

Activity: 616


View Profile
September 10, 2013, 08:16:48 PM
 #9044

I want half a kitty and 3 unobtaniums.

crumbs
Full Member
***
Offline Offline

Activity: 210



View Profile
September 10, 2013, 08:33:20 PM
 #9045

F'ing SWEET.  Where do I collect?

& mbbc:  New PR guy will taek caer of stuffs 4U.
vesperwillow:  Your new kitty is busy, shooping graphical designings 4 Ken's new website.  B patient pl0x.
  
    -- Advisory Cats, Active Mining & Catteries.

Edit:  Wrong thread Embarrassed
The Avenger
Hero Member
*****
Offline Offline

Activity: 798



View Profile
September 10, 2013, 08:37:58 PM
 #9046

I assume that it is to power the on board Linux OrSOC device?

It looks like a Beaglebone.   Further, the cut-out to the left  looks as though it might be for a rPi.

You could be right, here's a comparison:


Also note the round edges.
Well spotted! It's a dead ringer. This'll be what the 5v requirement was about.

Which makes me wonder - are we going to also need a separate 5v power supply adaptor? Or is there such an adaptor that can convert one of the connectors from a PSU to that fitting?

"I am not The Avenger"
1AthxGvreWbkmtTXed6EQfjXMXXdSG7dD6
Henchman24
Sr. Member
****
Offline Offline

Activity: 378


View Profile
September 10, 2013, 09:14:17 PM
 #9047

Which makes me wonder - are we going to also need a separate 5v power supply adaptor? Or is there such an adaptor that can convert one of the connectors from a PSU to that fitting?

Possibly the molex to the right provides power for it?
vulgartrendkill
Hero Member
*****
Offline Offline

Activity: 518



View Profile WWW
September 10, 2013, 09:22:30 PM
 #9048

Which makes me wonder - are we going to also need a separate 5v power supply adaptor? Or is there such an adaptor that can convert one of the connectors from a PSU to that fitting?

Possibly the molex to the right provides power for it?

I believe that is the case
btc_uzr
Sr. Member
****
Offline Offline

Activity: 434


let's have some fun


View Profile
September 10, 2013, 09:26:15 PM
 #9049

Which makes me wonder - are we going to also need a separate 5v power supply adaptor? Or is there such an adaptor that can convert one of the connectors from a PSU to that fitting?

Possibly the molex to the right provides power?

I assume so as well, since we have a psu for the asics already in place.
The small 5V connector might be used in cases (not in ours) where you run the SoC board and nothing else....like a Rpi.

!! File Complaints Against KnCMiner NOW !!
..and Thou shalt spread the coin in the name of cryptography for eternity
canth
Legendary
*
Offline Offline

Activity: 1442



View Profile
September 10, 2013, 09:27:36 PM
 #9050

I happen to have one of these PSUs kicking around. I've looked at the specs and it seems like it would fit the bill, but I'd appreciate a 2nd set of eyes. Any glaring reason that this unit wouldn't be a decent PSU for a Jupiter?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817103088

DimensionsOfHell
Full Member
***
Offline Offline

Activity: 203


View Profile
September 10, 2013, 09:28:33 PM
 #9051

Alright guys, some of you have a lot more knowledge then me in the PSU area, so if you could help me out here, I'd appreciate it.
I have a Saturn on order, which I plan to upgrade to Jupiter once they start offering the modules separately. The PSU that I have picked out seems like a perfect fit to me, and at a fairly good price. If you guys could look it over and let me know, that would be great. And if it is a good one, it could turn out to be a good deal for everyone.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139011

Should be the minimum acceptable wattage for a power supply.  I'd recommend going with something around 1kw... They are much more efficient at 50 % load versus 80 - 90 % load.

That hasn't been true for the last decade but it is a myth which dies hard.

The minimum efficiency for an 80-Gold PSU is 90% at 50% load and 87% at 100% load.  The curve is very flat.

For example here is the test for the PSU linked to:
http://www.plugloadsolutions.com/psu_reports/CORSAIR_CMPSU-850HX_ECOS%201464_850W_Report.pdf

50% load = 90.38% efficiency
75% load = ~90.0% efficiency (estimated due to their horribly low res chart)
100% load = 87.06% efficiency

So using a larger PSU would save you maybe 1% in power, 3% under the extreme example of 100% load vs 50% load.  At 1% power on 600W 24/7 would save you 53 kWh per year.  At $0.10 per kWh we are talking $5.  Spending $50 more on a PSU makes the break even 10+ years. At once time PSU were pretty shitty with narrow "sweet spot" (40% to 60% of peak power) and horribly efficiency outside of that (<70%).  Those days have been gone for a long time with most quality PSU having an almost flat efficiency "curve" from 20% to 100%.  It is nice companies keep making more and more efficient PSU (Platinum and Titanium are also possible) but once you get to ~90% it starts being diminishing returns.    Still Google and facebook use 12V only PSU and the get about 95%+ efficiency.  Really there is no reason for PC PSU to be as complex as they are.  Maybe some future standard will improve that. 




Thank you very much for that. That was similar to my line of thinking. I couldn't justify the $50 difference in price, when the efficiency of the unit won't be that huge.

My mind is now set to that unit. :-)
rolling
Sr. Member
****
Online Online

Activity: 446



View Profile
September 10, 2013, 09:38:49 PM
 #9052

Which makes me wonder - are we going to also need a separate 5v power supply adaptor? Or is there such an adaptor that can convert one of the connectors from a PSU to that fitting?

Yes, I think you will need a 5v connector as well.  I believe all ATX power supplies have them.  When KNC announced the case, they mentioned the 5v connector as well as the 12v.

https://www.kncminer.com/news/news-28
Wesly
Full Member
***
Offline Offline

Activity: 185


View Profile WWW
September 10, 2013, 09:41:46 PM
 #9053

Alright guys, some of you have a lot more knowledge then me in the PSU area, so if you could help me out here, I'd appreciate it.
I have a Saturn on order, which I plan to upgrade to Jupiter once they start offering the modules separately. The PSU that I have picked out seems like a perfect fit to me, and at a fairly good price. If you guys could look it over and let me know, that would be great. And if it is a good one, it could turn out to be a good deal for everyone.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139011

Should be the minimum acceptable wattage for a power supply.  I'd recommend going with something around 1kw... They are much more efficient at 50 % load versus 80 - 90 % load.

That hasn't been true for the last decade but it is a myth which dies hard.

The minimum efficiency for an 80-Gold PSU is 90% at 50% load and 87% at 100% load.  The curve is very flat.

For example here is the test for the PSU linked to:
http://www.plugloadsolutions.com/psu_reports/CORSAIR_CMPSU-850HX_ECOS%201464_850W_Report.pdf

50% load = 90.38% efficiency
75% load = ~90.0% efficiency (estimated due to their horribly low res chart)
100% load = 87.06% efficiency

So using a larger PSU would save you maybe 1% in power, 3% under the extreme example of 100% load vs 50% load.  At 1% power on 600W 24/7 would save you 53 kWh per year.  At $0.10 per kWh we are talking $5.  Spending $50 more on a PSU makes the break even 10+ years. At once time PSU were pretty shitty with narrow "sweet spot" (40% to 60% of peak power) and horribly efficiency outside of that (<70%).  Those days have been gone for a long time with most quality PSU having an almost flat efficiency "curve" from 20% to 100%.  It is nice companies keep making more and more efficient PSU (Platinum and Titanium are also possible) but once you get to ~90% it starts being diminishing returns.    Still Google and facebook use 12V only PSU and the get about 95%+ efficiency.  Really there is no reason for PC PSU to be as complex as they are.  Maybe some future standard will improve that.  


There has been quite a bit of discussion on which PSU to purchase at the KNC forum.  The bigger 1000+ Watts PSU will not only offer better efficiency at around 50% load, but the lighter load (relative to max load) will also be easier on the PSU, extending its life and reliability.  The extra wattage headroom might also be useful in case the KNC chip turns out to be highly-overclockable.  On the same PSU KNC forum thread, one of the KNC staff has already leaked that Jupiter will run at an expected speed of 500 GH/s!

http://forum.kncminer.com/forum/main-category/hardware/107-psu-recommendation-jupiter-the-largest-planet/page3
btc_uzr
Sr. Member
****
Offline Offline

Activity: 434


let's have some fun


View Profile
September 10, 2013, 09:44:55 PM
 #9054

Which makes me wonder - are we going to also need a separate 5v power supply adaptor? Or is there such an adaptor that can convert one of the connectors from a PSU to that fitting?

Yes, I think you will need a 5v connector as well.  I believe all ATX power supplies have them.  When KNC announced the case, they mentioned the 5v connector as well as the 12v.

https://www.kncminer.com/news/news-28

Have read this too, but I guess the 12V are the asic power supply.
Molex is 12V and 5V, so you have the choice => http://en.wikipedia.org/wiki/Molex#Molex_connector

Does your psu have such a small 5V connector ? Did they mention we need anything in addition to the psu (except for the 'paper-clip') ?
Both no, isn't it ?

!! File Complaints Against KnCMiner NOW !!
..and Thou shalt spread the coin in the name of cryptography for eternity
The Avenger
Hero Member
*****
Offline Offline

Activity: 798



View Profile
September 10, 2013, 09:55:33 PM
 #9055

Which makes me wonder - are we going to also need a separate 5v power supply adaptor? Or is there such an adaptor that can convert one of the connectors from a PSU to that fitting?

Yes, I think you will need a 5v connector as well.  I believe all ATX power supplies have them.  When KNC announced the case, they mentioned the 5v connector as well as the 12v.

https://www.kncminer.com/news/news-28

Have read this too, but I guess the 12V are the asic power supply.
Molex is 12V and 5V, so you have the choice => http://en.wikipedia.org/wiki/Molex#Molex_connector

Does your psu have such a small 5V connector ? Did they mention we need anything in addition to the psu (except for the 'paper-clip') ?
Both no, isn't it ?
I think that's it. The molex to the right of the beaglebone is probably providing the juice (through the +5v red wire that you point out). So that's all good, will just be using regular PSU connectors.

"I am not The Avenger"
1AthxGvreWbkmtTXed6EQfjXMXXdSG7dD6
DeathAndTaxes
Donator
Legendary
*
Offline Offline

Activity: 1218


Gerald Davis


View Profile
September 10, 2013, 10:12:30 PM
 #9056

There has been quite a bit of discussion on which PSU to purchase at the KNC forum.  The bigger 1000+ Watts PSU will not only offer better efficiency at around 50% load, but the lighter load (relative to max load) will also be easier on the PSU, extending its life and reliability.  The extra wattage headroom might also be useful in case the KNC chip turns out to be highly-overclockable.  On the same PSU KNC forum thread, one of the KNC staff has already l leaked Jupiter will run at an expected speed of 500 GH/s!

True and maybe some people can just wait for more info but there is a point of diminishing returns.  Lets say the Jupiter is 500 MH/s.  >850W @ 12VDC would mean >944W @ 120VAC.  That is >1.8 J/GH.  Already close to double what bitfury does @ 55nm and more than double all other 28nm offerings.  I certainly hope it doesn't require even MORE power than that, I am hoping it will be significantly less power even when overclocked.  Then again it isn't like more capacity hurts I was just pointing out the "much lower efficiency" at high load is pretty much a misnomer at this point.

DeathAndTaxes
Donator
Legendary
*
Offline Offline

Activity: 1218


Gerald Davis


View Profile
September 10, 2013, 10:16:51 PM
 #9057

I happen to have one of these PSUs kicking around. I've looked at the specs and it seems like it would fit the bill, but I'd appreciate a 2nd set of eyes. Any glaring reason that this unit wouldn't be a decent PSU for a Jupiter?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817103088

Should be good.  Has 4 pairs of 2 PCIE connectors so you can use 1 from each pair without any worries of overloading the wiring.  Has a single 83A 12V rail which should be more than enough.  80-Gold efficiency and more headroom then KNC recommends.  Can never know for sure until you test it but I can't see any reason it wouldn't work.
btc_uzr
Sr. Member
****
Offline Offline

Activity: 434


let's have some fun


View Profile
September 10, 2013, 11:03:07 PM
 #9058

http://www.nytimes.com/2013/08/17/us/as-worries-over-the-power-grid-rise-a-drill-will-simulate-a-knockout-blow.html?pagewanted=all&_r=2&
whoa, maybe better get some solar panels..image they blow something up by accident during the drill  Cheesy

!! File Complaints Against KnCMiner NOW !!
..and Thou shalt spread the coin in the name of cryptography for eternity
Transam808
Jr. Member
*
Offline Offline

Activity: 48


View Profile
September 10, 2013, 11:21:52 PM
 #9059


http://www.nytimes.com/2013/08/17/us/as-worries-over-the-power-grid-rise-a-drill-will-simulate-a-knockout-blow.html?pagewanted=all&_r=2&
whoa, maybe better get some solar panels..image they blow something up by accident during the drill  Cheesy

  One thing that sucks about solar panels.  Is if its a grid tide system like mine and most are.    They do not work when the power go out.    Its a safety future so you don't feed electricity back in to the lines and end up frying the guy working on them on the other end.   But you can always do a battery backup.  Witch in that case they would still work.  But cost and maintenance of batteries   Can be costly,  So most people don't bother.    Easier to just have a generator for a black out.

_HashFast Technologies_28 nm mining
Producer of High Performance ASICS
BabyJets & Sierras On Sale today!
erk
Hero Member
*****
Offline Offline

Activity: 672


View Profile
September 10, 2013, 11:25:14 PM
 #9060


http://www.nytimes.com/2013/08/17/us/as-worries-over-the-power-grid-rise-a-drill-will-simulate-a-knockout-blow.html?pagewanted=all&_r=2&
whoa, maybe better get some solar panels..image they blow something up by accident during the drill  Cheesy

  One thing that sucks about solar panels.  Is if its a grid tide system like mine and most are.    They do not work when the power go out.    Its a safety future so you don't feed electricity back in to the lines and end up frying the guy working on them on the other end.   But you can always do a battery backup.  Witch in that case they would still work.  But cost and maintenance of batteries   Can be costly,  So most people don't bother.    Easier to just have a generator for a black out.
You can buy hybrid inverters that will grid feed and charge batteries so you can continue to mine if the grid goes out. They obviously wont feed the grid from the batteries for safety.


Pages: « 1 ... 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 [453] 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 ... 2138 »
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!