Topic: Swedish ASIC miner company kncminer.com - page 1384. (Read 3050075 times)

Then why not leave the 8 VRMs on for that point??

why are you dodging that?  what was the main gain for everyone on taking off the 4 VRMs??   You could keep shipping with 8 until you tested taking off 4.. .how can you try to keep avoiding this logic?

Not on die, but on the PCB, underneath chip - temp sensor hence ~50 degrees celcius.

Really no desktop fans required, honestly.

Well it depends.  No device is fine at 99.99999C and then explodes at 100C.  The hotter a component gets the less efficient it becomes that means more current is needed and more current means more heat which means higher temps, which means lower efficiency .... and the cycle goes on. 

All the problems seem to be limited to the rushed "lets cut the number of VRMs in half" mid production modification version.  If the 4 VRM version (doing the job of 8 VRM as designed) is running at high load then even a modest amount of cooling could improve performance.  Not saying that IS the case just pointing out it could be.

I have absolutely no idea how people with this amount of experience find themselves buying these devices.  Really?

Do you read before trolling???  the chips are rated for 100C not the VRMs

but even regarding the chips, just because it can work at 100C ...  oh never mind.. back to ignore

Don't plug it in.  Go buy something else at your local electronics store.  It will pay for itself in 24 hours.  You do NOT want a downed machine currently.

Also - .95 seems to be working very well for me:

 (5s):585.5G (avg):556.7Gh/s | A:65024  R:512  HW:3533  WU:7784.1/m

Because you wanted boards hashing ASAP, and got them.

The official firmware status page temp is also from VRM?

 HW status:

ASIC slot #1: 54.0 ℃
ASIC slot #2: 53.0 ℃
ASIC slot #3: 55.0 ℃
ASIC slot #4: 43.0 ℃

My Jupiter is scheduled for delivery today. Of course I bought a Corsair HX850 - is there any *safe* way to use it, or should I not even plug the thing in?

What if I power on the HX850 and plug in the PCI-E connectors one at a time?

Agreed.  Either he is misunderstanding (playing a game of telephone here) or it is just nonsense to shift the blame.

Power suplies don't ramp up current.
Power supplies don't force current.
A circuit DRAWS current.
If the circuit was damaged by drawing too much current then the circuit shouldn't draw so much current.

It is called testing.  Which was absent after taking off the 4 VRMs.   Why can't you admit that they should of tested that decision, found the issues that us customers had to point out, created the firmware, test it again, THEN ship with 4 VRMs?

And where are any testing results, metrics from .95?  Where are the before / after numbers?

There are dev boxes that have been running for hours. Temp matters if the chips are stressed, but by all means pay the extra cash for the additional elec costs 24/7

Or please apply .95 drastic power drop. Save your fans, and your elec bill.

Again Bertmod measures VRM temp, not ASIC.

And here he's correct.  If the VRM is designed to withstand 100 C, cooling it from 80 to 40 makes no difference.  

We all bought an unrefined product did we? Odd, I didn't see those words or anything like that when I paid for mine.
Not in any of the back patting videos or interviews either.

We bought a miner that we were told confidently would have margins upon margins capable of 400Gh and even today no-one has said that this (and the oct 15th date) has changed. Except of course to up it to 550 on the site and most promos ...which currently is false advertising ..as the past 20 pages here bear witness to.

As for all this shite about power consumption...right now is that a big priority to get down? I'd rather have a hashing rig while it's making enough BTC to make a few quid power bill extra irrelevent..later on the power consumption will matter more but not initially compared to a working rig. As long as the PSU handles it, we can wait for a firmware fix to get it down. Hashing reliably without smoke is the priority for users.

The sarcastic tone of Oramas post amazed me, people using fans to reduce temps ..planking? It worked. How bizarre is that? More to the fucking point no-one was talking from KNC end despite much asking...so what else were people to do? "We have a specialist flying in and we'll get back to you as soon as we know something."  < see, took me 3 seconds to type that, and even some poor sweaty overworked KnC human could manage that surely?

The way to deal with trainwrecks like this isn't arrogance, sarcasm and silence ..it's communication and apologies and in many cases here where buyers have been so badly let down with multi hosted jupiters...fair compensation.

I wont deal with KnC again, nothing to do with the rigs, it's the denial and head in the sand stuff I can't be living with.

So they said they produced 700 miners so far, now the question is how many more do they have to produce?  And how long will this take? It's starting to feel that the fact my status went from paid to in process even more like a delay tactic, to avoid refunds, still hope I'm wrong on this though.

Yeah, my hosting Jup went to 480 GH/s, the highest I've seen but dropped down to 300... crossing fingers it'll go back up.

This makes 0 sense.  Are you saying that other PSUs ramp up the current over 30 seconds?  PC power supplies are voltage, not current, regulated.  There's overcurrent protection, but that just shuts the thing down & stops it from toasting itself.

you are talking out of your ass... get some more sleep.  There is endless proof to the contrary that lowering temp = better performance for long stable hashing.  You might be talking about 10 minutes which would be a long time compared to what my miner was tested before shipping

temps dropped too

WOW !
This one works !
Previously I had around a miserable 300 Gh/s (and more than 10% cores disabled) as well as more than 30% HW-errors.

But look now:  524 Gh/s (avg in the last 27 minutes). and only 6.5% HW-errors.....  And I just looked at the cores: only 9 of the 768 cores are disabled.   And BitMinter-pool is even telling me that I'm running 591 Gh/s !!!  

I didn't believe this could be solved with software-update. But they did!   Congratulations KnC !