Topic: Swedish ASIC miner company kncminer.com - page 43. (Read 3049511 times)

Do you mean 80C? ... so basically a 10C decrease using copper & improved fan?
If you meant 80F ... then I meant ... how much did the DCDC temps change as shown in the webgui =) .. cuz those numbers are in C

In stock confugration .. the stock plate just touches the tops(the inductor - where u put copper hs) of those DCDC's right?

Traditionally for stuff like CPU's at least, you apply the TIM(thermal interface material) on the chip itself, in the form of a little bead in the center. The pressure from the heatsink being screwed down then spreads it out. This way you get a nice thin layer created by the 2 surfaces you're mating together. The TIM is only supposed to help w/ heat conductivity due to the imperfections of both of the surfaces. There isnt supposed to be a thick ass layer of it between the 2 surfaces, often times this will hurt thermal conductivity.
People & manufacturers tend to apply way too much TIM... lol...

If you want the best TIM possible there is this stuff thats miraculous for high wattage applications.
http://www.amazon.com/Coollaboratory-Liquid-Pro-Thermal-Compound/dp/B001PE5XAC

I used it on my hashfast cards, dropped the temps 20-30c ... Im not shitting ... I couldnt believe it at first myself.  The watercooling tube went from a mild warmth in my hand to to a near scorching feeling in my hand... the thermal conductivity of that liquid pro is fucking insane.   It should be, its literally liquid metal. Of course the hashfast cards were like 600watts or something.  These Titan cubes are around 270w(actual ASIC usage)(depending on clocks / volts), so liquid pro may not have that much of an effect, but it would help still somewhat. On second thought, if the heatspreader on the Titan ASIC is aluminium then cant use liquid pro =/

Also, keep in mind the Titan ASIC is covered by a heat spreader ... it could be mounted faulty as well and no matter how u apply the heatsink ... the ASIC dies may still be running hot if the manufacturer didnt mount that heat spreader right.

Also, as far as the actual temp of the Titan ASIC itself, its all guesswork... we have no fucking idea. Heck, some of these dies not working right may be simply because they are overheating either due to bad heatsink seating or the heatspreader is mounted like shit.
If the heatspreader is actually soldered to the ASIC on all 4 dies ... then the thermal conductivity of the heatspreader should be perfect.

We only know the temps of the DCDC's modules. Which is the copper heatsink mod posted above. Each one of those is a DCDC, 2 per die.

Hey I have a seasonic 1200i that has worked well since nov 2014 on my 6 cube Titan setup

summer it toggled itself off...so i put 2 cubes with 1 dead die each and reg working full cube on it to save (100 watts)

it did this on me again less then 1 month ago

and it was fine up to this week...now it has 're-lighted 2x time in 3 days"

so my post here on such..in that the 'asic gods' are trying to tell me something i fear (like get another corsair 1200i you cheapskate!)



so my question is I have a 660w corsair (remember knc in 2013 saying they were gonna have 3rd batch and then did not yeah still new lol)

anyway I COULD make this 6 port unit with 3 cubes (fading corsair 1200i) into a 5 cube unit and move the cube to my other controller using above seasonic 660w
so that my 2 cube titan unit (works fine with 860w seasonic) into a 2 psu unit and 3 cube unit

that is my cheap ass plan (unless folk think it is too dangerous from what they see my psu doing..thus this post to other titan types)


BUT is this a 'sign from the asic gods' that the PSU is going BAD big time and I should just replace it?

(the self test comes up ok go figure)

temp in basement is like 64F so THAT should not be an issue..also have euro 220v tripp lite surge protector on the unit...and the other corsair on same controller
works just 'dandy' ..that one has the controller power as well...so the 'fading 1200i goes and poof' she mines at 1/2 speed ....

(as i sit here looking from work at my 429mh vs my usual 645mh ...gee a whole 2 bucks a day I'm losing after electric! (the horror) with LTC anyway

anyway if worse comes to worse the only problem with my 'cheap ass plan' is even running 2 cubes it 'fades out and off" and it won't be stable ...I will try this

would be slick if I could at least 'see' if this could limp along with 2 cubes only.....save me 309 bucks (or at least alllow me to get a new corsair 1200i and keep in the box

as a spare ...if I go full coward)

if folk on here have more experience with this then myself and say NO DON'T it is a sign of something worse and could fry the titan etc would appreciate the 'heads up"

....but anyway just wondering what folk think

also have the old 7 year parts and labor warranty on this corsair 1200i i psu's is the postage/costs worth looking into to get such refurbished? (309 sale w/ship on newegg as an example
of new corsair 1200i costs incl shipping)...has anyone every 'refurb'd' a psu on such a plan after the 30 day replacement has passed...is it worth it?...

anyway appreciate it ....don't need to turn the 1 titan into a 'doorstop' quite yet if the consensus is my PSU is shot as hell and just letting me know before it 'blows up"


(i bet we will see more of these posts...actually like 14 months 24/7 probably is NOT unexpected to replace a PSU on these....but still)

anyway 'expert' advice from others 'maybe' with similar issues (gpu/asic/or other) please reply with advice

thanks



Did you get a picture of your 'obviously' modified cut down 'heat sink plate' on the above also (or a link)

trying to 'man up' and do the same

on a side note I 'heard' from someone who got an email from kurt at knc (tech) back in the day ..that you put the 'thermal paste' on the 'heatsink' not the chip..just enough to cover it

not sure if legit advice or not (it is a knc tech) but figured I'd pass it along here .....perhaps we can have a debate on the merits of each

anyway my plan is if I ever do such I will simply take the 'heatsink plate' to a local metal shop ..give the guy 10 bucks to cut it 'precisely' and buff it up...lazy that I am

anyway again a picture of your mod would be great!

Since the Titan does not regulate fan speed, does it matter if we use 3 or 4-pin connectors? 

They managed to keep temp below 80F during summer months, but I also added individual heat sinks to the DCDC module (like in Swedish video). Temp would go up to 90 when I was using stock fan.

Edit: mod pic

Curious, whats the DCDC temp difference you noticed?

Very happy with Noctua NF-A14, a tad louder than stock fan but cools much better.

http://www.amazon.com/gp/product/B00KFCRF1A?psc=1&redirect=true&ref_=oh_aui_search_detailpage

I need to replace a fan on one of my KNC Titan cubes.  What replacement fans have others had good luck with?

Someone on here was aksing about this...it is JUST the knc old site (not the forums) but has all the news
and patches from oct jupiters etc on

just figured it may be useful to some

i'm currently using httrack websidte copier to grab the stuff and firmware..but again forums is down

here is the IP to try

http://168.63.65.32/


just pop that in and let it run...again forums come up as 502 error

looking at tools to merge all the knc forums wayback machine archives into one archive to see if we could get a more complete mirror of the forums

i see tools for such but looks over my head

that would be my suggestion to the more knowledgeable then myself if there was some way to grab all the 'wayback machine' archives and 'merge'

them in some manner to recover

www.forums.kncforums.com ..using that or IP or whatever

but again all are on below

https://web.archive.org/web/*/http://forum.kncminer.com/forum/

well anyway was just a thought..but anyway for those in need or want to track firmware progress etc for jupiter 2013 and onward use the above ip

but again would be nice to see all the wayback forums (if possible) merged into at least a 'half-assed' version of forums tech info

would be helpful

anyway for what it is worth at this late date

by the by

www.kncminer.com

still has pages up for neptune and titan stuff fyi....

Well, hm. The controller has a common ground line to every port, the supplies to the FPGA are not transformer isloated so each cube does share a common. One could have used optoisolators on the SPI busses, but naah.

That said, I don't think different breakers would be a problem as long as all breaker and power supplies shared a common ground.

The controller doesn't share a common ground with any of the cubes correct? So you are allowed to plug them into different breakers?

Some of my seasonic psu do that. Seasonic has 4 12 pin plugs, each 12 pin plug feeds a split cable with 2 6 pin pci connectors. If you use both connectors on the same cable going to the same y connector you may overload that circuit and the psu will shut down. I think seasonic has some overload protection that kicks in, especially the newer psu's

What you have to do is take 1 cable from 1 12 pin connector, and another cable from another 12 pin connector and plug these into the Y connector that powers the cube. Thus splitting the power draw between 2 12 pin ports on the psu.

Seasonic only supplies 3 12 pin cables, so to power 2 cubes you need to buy an extra one for these newer psu

If you have seasonic this may be causing the problem, otherwise give lightfoot a try

Here is a good calculator

https://www.litecoinpool.org/calc

Ahh, that is so great, I can finally configure my Titan in Zulu!

I have a question - How much profit are you guys with only 1 Titan making? What's your electricity cost?

I have a half-dead Titan that's been sitting in its box gathering dust... doesn't seem worth trying to set it up (I remember hours and hours of frustration trying to keep it mining properly...), but I'm surprised that many of you seem to still be making a profit with it after so many months. And with GenTarkin's improvements to the software, it might be much less frustrating than it was with KNC's rushed software.

I am happy to test on one of mine for you and provide feedback if your interested

You know, at this point Im satisified with how it has been testing. The core code of automatic die tuning is very functional and seems to adjust to many different scenarios very well. I really need to get it tested on more rigs. I only have 1 tester at this point and usually only 1 - 2 rigs tested at a time. I need more. LOL!

As always your efforts are much appreciated, any updates on the energy saving tuning have you made progress with that? will it be ready for you next release?

Well, if it makes it easier for others in other countries to navigate the interface & understand then, then Id say its worth it =)

I think I'd like to request dropping extra languages completely.  Especially if it has to rely on google.

Really, who needs it? Everyone who has a Titan understands it. Seems like a waste of time, development wise. Only my opinion, of course.

Another major feature I added in test build today:

Translation of the firmware webgui to 80+ different languages!

Little preview ---->