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Topic: Swedish ASIC miner company kncminer.com - page 335. (Read 3049515 times)

hero member
Activity: 700
Merit: 504
Run a Bitcoin node.
So this would allow two pci-e cables from a PSU to be combined to the single pci-e receptacle on a Neppy module?

The advantage being less load on each pci-e cable, less chance of overheating?

I take it this 2-to-1 cable is strong enough to handle the power requirements, and a Neptune would need 5 of them in total?

What are HCS pins?

The answer to your first question is yes.

The second question is yes..to a degree.  Yes in that the cables from your PSU will see less load and therefore less heat/chance of melting.  This adapter as is with regular pins and 18AWG wiring still has the same risks as if you used a regular PCIe cable.  The difference is that it is cheap and easily replaceable.

The upgraded version I have in mind will probably be overkill for this application but that is how I roll.  Molex makes a line of minifit pins suitable for high current systems that allow up to 12A instead of the regular 9A.
I'd be interested to hear details of the upgraded version.
legendary
Activity: 1400
Merit: 1000
I owe my soul to the Bitcoin code...
So this would allow two pci-e cables from a PSU to be combined to the single pci-e receptacle on a Neppy module?

The advantage being less load on each pci-e cable, less chance of overheating?

I take it this 2-to-1 cable is strong enough to handle the power requirements, and a Neptune would need 5 of them in total?

What are HCS pins?

The answer to your first question is yes.

The second question is yes..to a degree.  Yes in that the cables from your PSU will see less load and therefore less heat/chance of melting.  This adapter as is with regular pins and 18AWG wiring still has the same risks as if you used a regular PCIe cable.  The difference is that it is cheap and easily replaceable.

The upgraded version I have in mind will probably be overkill for this application but that is how I roll.  Molex makes a line of minifit pins suitable for high current systems that allow up to 12A instead of the regular 9A.
sr. member
Activity: 476
Merit: 250
I just whipped this little number up for possible use on a Neptune.

I am considering upping it to 16AWG and HCS pins but only if there is demand for it.


So this would allow two pci-e cables from a PSU to be combined to the single pci-e receptacle on a Neppy module?

The advantage being less load on each pci-e cable, less chance of overheating?

I take it this 2-to-1 cable is strong enough to handle the power requirements, and a Neptune would need 5 of them in total?

What are HCS pins?

I dont get it. suppose one asic box requires 20A current. with such adapter each pci-e cable will have 10A load. but 20A still applies on the adapter side. and such adapter is not with high quality (maybe no brand at all?). I think it is more dangerous using such 2-to-1 adapter.

by the way, how much current does one neptune asic box consume? and what is the max current for the normal pci-e cable?
hero member
Activity: 700
Merit: 504
Run a Bitcoin node.
I just whipped this little number up for possible use on a Neptune.

I am considering upping it to 16AWG and HCS pins but only if there is demand for it.


So this would allow two pci-e cables from a PSU to be combined to the single pci-e receptacle on a Neppy module?

The advantage being less load on each pci-e cable, less chance of overheating?

I take it this 2-to-1 cable is strong enough to handle the power requirements, and a Neptune would need 5 of them in total?

What are HCS pins?
legendary
Activity: 3808
Merit: 7912
Just ask for refund for my titan order and they say all sales are final... KNC become so lame company and tread customers as slaves ...

Why would you ask for a refund? KnC said from Day 1 there would be no refunds on Titans.

 Where does it say that for customers converting orders?

 "For those of you wanting to convert an existing Neptune order to a titan order please contact customer service for assistance."

 I wonder how customer service can switch out the orders without issue yet not be able to effect refunds in a timely manner. 


Just don't get it mixed up....they likely would let you swap a Titan back to a Neptune at this point heh Smiley

Searing


 Wonder if we would be able to swap out our bitcoin refunds (which they said would be faster than USD refund) back to a USD refund since at this point they both seem pretty darn slow.
copper member
Activity: 2898
Merit: 1465
Clueless!
Just ask for refund for my titan order and they say all sales are final... KNC become so lame company and tread customers as slaves ...

Why would you ask for a refund? KnC said from Day 1 there would be no refunds on Titans.

 Where does it say that for customers converting orders?

 "For those of you wanting to convert an existing Neptune order to a titan order please contact customer service for assistance."

 I wonder how customer service can switch out the orders without issue yet not be able to effect refunds in a timely manner. 


Just don't get it mixed up....they likely would let you swap a Titan back to a Neptune at this point heh Smiley

Searing
legendary
Activity: 1400
Merit: 1000
I owe my soul to the Bitcoin code...
I just whipped this little number up for possible use on a Neptune.

I am considering upping it to 16AWG and HCS pins but only if there is demand for it.

legendary
Activity: 3808
Merit: 7912
Just ask for refund for my titan order and they say all sales are final... KNC become so lame company and tread customers as slaves ...

Why would you ask for a refund? KnC said from Day 1 there would be no refunds on Titans.

 Where does it say that for customers converting orders?

 "For those of you wanting to convert an existing Neptune order to a titan order please contact customer service for assistance."

 I wonder how customer service can switch out the orders without issue yet not be able to effect refunds in a timely manner. 
hero member
Activity: 784
Merit: 1004
Glow Stick Dance!
Are there no fans attached directly to the radiator? Really?! Does the case only have a single intake fan?
There is foam between heatsink and case.
Most of the fan air goes right thru heatsink.
The cubes are OK air tunnels, they work at 80F/26C ambient, lol.
The PCIe hole is on the fan side of heatsink and has good air pressure.
Frugal as they are this one makes sense.
On a "BTC miner noise scale" they are quiet.

YMMV
Smiley

So the air can't be directed around of the side, top or bottom of the heatsink at all? Still, a fan should be directly connected to the radiator to force the air through the radiator fins.

And so there is only the intake fan then, not even an exhaust fan for push-pull cooling? Even a fan connected to pull cool air through the radiator would be better than just a single case fan. I see a lot of room for improvement in cooling these units!

oh ya there is...taking them out of the case n raise'em up would do wonders...and cooler vrms = less watts Smiley

And if they're removed from the cases then they will definitely need a fan directly connected to the radiator.

idk how hot the radiator gets but on my nov units...i don't have a fan on them and they are just fine...the fan is still in front of the whole unit so its still getting air flow...they aren't even warm to the touch and i have them oc'd to 335 setting on padrinos FW so i guess i'm doing something right Cheesy

And you don't have 350 watts running through a Nov Jup chip like a Neptune has. And just because a Jupiter ASIC loves heat doesn't mean a Neptune ASIC necessarily does.
legendary
Activity: 1512
Merit: 1000
@theshmadz
Are there no fans attached directly to the radiator? Really?! Does the case only have a single intake fan?
There is foam between heatsink and case.
Most of the fan air goes right thru heatsink.
The cubes are OK air tunnels, they work at 80F/26C ambient, lol.
The PCIe hole is on the fan side of heatsink and has good air pressure.
Frugal as they are this one makes sense.
On a "BTC miner noise scale" they are quiet.

YMMV
Smiley

So the air can't be directed around of the side, top or bottom of the heatsink at all? Still, a fan should be directly connected to the radiator to force the air through the radiator fins.

And so there is only the intake fan then, not even an exhaust fan for push-pull cooling? Even a fan connected to pull cool air through the radiator would be better than just a single case fan. I see a lot of room for improvement in cooling these units!

oh ya there is...taking them out of the case n raise'em up would do wonders...and cooler vrms = less watts Smiley

And if they're removed from the cases then they will definitely need a fan directly connected to the radiator.

idk how hot the radiator gets but on my nov units...i don't have a fan on them and they are just fine...the fan is still in front of the whole unit so its still getting air flow...they aren't even warm to the touch and i have them oc'd to 335 setting on padrinos FW so i guess i'm doing something right Cheesy

idk about november units, as my jup is an october version with 2 chips that have a 0-die problem. there was a certain firmware v kncminer-0.98.1(beta) that would get mine to 550, but I had to restrict the airflow and get into the 75-80 degree range before it would hash at that rate. (any cooler and it would barely reach 400.)

recently I tried the new firmware cuz the advanced tab looked really cool, but now 2 of the chips only run with 3 out of 4 cores active. if I try to tweak the voltage and stuff to try to kick-start them, then the 0 core will turn on, but the other three turn off...

I tried to flash back, but it will not run at all with the old firmware anymore, so it's down to only 500 GH/s now. Sad

quite frustrating and counter-intuitive that a piece of computer hardware would run better when hotter, just bakes my brain.
hero member
Activity: 784
Merit: 504
Dream become broken often
Are there no fans attached directly to the radiator? Really?! Does the case only have a single intake fan?
There is foam between heatsink and case.
Most of the fan air goes right thru heatsink.
The cubes are OK air tunnels, they work at 80F/26C ambient, lol.
The PCIe hole is on the fan side of heatsink and has good air pressure.
Frugal as they are this one makes sense.
On a "BTC miner noise scale" they are quiet.

YMMV
Smiley

So the air can't be directed around of the side, top or bottom of the heatsink at all? Still, a fan should be directly connected to the radiator to force the air through the radiator fins.

And so there is only the intake fan then, not even an exhaust fan for push-pull cooling? Even a fan connected to pull cool air through the radiator would be better than just a single case fan. I see a lot of room for improvement in cooling these units!

oh ya there is...taking them out of the case n raise'em up would do wonders...and cooler vrms = less watts Smiley

And if they're removed from the cases then they will definitely need a fan directly connected to the radiator.

idk how hot the radiator gets but on my nov units...i don't have a fan on them and they are just fine...the fan is still in front of the whole unit so its still getting air flow...they aren't even warm to the touch and i have them oc'd to 335 setting on padrinos FW so i guess i'm doing something right Cheesy
hero member
Activity: 784
Merit: 1004
Glow Stick Dance!
Are there no fans attached directly to the radiator? Really?! Does the case only have a single intake fan?
There is foam between heatsink and case.
Most of the fan air goes right thru heatsink.
The cubes are OK air tunnels, they work at 80F/26C ambient, lol.
The PCIe hole is on the fan side of heatsink and has good air pressure.
Frugal as they are this one makes sense.
On a "BTC miner noise scale" they are quiet.

YMMV
Smiley

So the air can't be directed around of the side, top or bottom of the heatsink at all? Still, a fan should be directly connected to the radiator to force the air through the radiator fins.

And so there is only the intake fan then, not even an exhaust fan for push-pull cooling? Even a fan connected to pull cool air through the radiator would be better than just a single case fan. I see a lot of room for improvement in cooling these units!

oh ya there is...taking them out of the case n raise'em up would do wonders...and cooler vrms = less watts Smiley

And if they're removed from the cases then they will definitely need a fan directly connected to the radiator.
hero member
Activity: 784
Merit: 504
Dream become broken often
Are there no fans attached directly to the radiator? Really?! Does the case only have a single intake fan?
There is foam between heatsink and case.
Most of the fan air goes right thru heatsink.
The cubes are OK air tunnels, they work at 80F/26C ambient, lol.
The PCIe hole is on the fan side of heatsink and has good air pressure.
Frugal as they are this one makes sense.
On a "BTC miner noise scale" they are quiet.

YMMV
Smiley

So the air can't be directed around of the side, top or bottom of the heatsink at all? Still, a fan should be directly connected to the radiator to force the air through the radiator fins.

And so there is only the intake fan then, not even an exhaust fan for push-pull cooling? Even a fan connected to pull cool air through the radiator would be better than just a single case fan. I see a lot of room for improvement in cooling these units!

oh ya there is...taking them out of the case n raise'em up would do wonders...and cooler vrms = less watts Smiley
hero member
Activity: 784
Merit: 1004
Glow Stick Dance!
Are there no fans attached directly to the radiator? Really?! Does the case only have a single intake fan?
There is foam between heatsink and case.
Most of the fan air goes right thru heatsink.
The cubes are OK air tunnels, they work at 80F/26C ambient, lol.
The PCIe hole is on the fan side of heatsink and has good air pressure.
Frugal as they are this one makes sense.
On a "BTC miner noise scale" they are quiet.

YMMV
Smiley

So the air can't be directed around of the side, top or bottom of the heatsink at all? Still, a fan should be directly connected to the radiator to force air through the radiator fins.

And so there is only the intake fan then, not even an exhaust fan for push-pull cooling? Even a fan connected to pull cool air through the radiator would be better than just a single case fan. I see a lot of room for improvement in cooling these units!
hero member
Activity: 784
Merit: 504
Dream become broken often
still can't believe they designed this case w/o knowing that the bottom of the pcb is the hottest part Sad do they even have smart ppl making these things?
sr. member
Activity: 386
Merit: 250
Are there no fans attached directly to the radiator? Really?! Does the case only have a single intake fan?
There is foam between heatsink and case.
Most of the fan air goes right thru heatsink.
The cubes are OK air tunnels, they work at 80F/26C ambient, lol.
The PCIe hole is on the fan side of heatsink and has good air pressure.
Frugal as they are this one makes sense.
On a "BTC miner noise scale" they are quiet.

YMMV
Smiley
sr. member
Activity: 476
Merit: 250
couldn't resist...



Looks like I'm going to be fiddling with setting up a couple Neppies on Maui, and we have the ax1200's already, lol. Oh well.


Is neptune supporting hot-plug to the PSU? There are only 2-3 PSU to power up 5 asic box and 1 controler. How to power on ASIC box one after another? Isn't it too dangerous to just plug the PSU power cable to the box with bare hands?
hero member
Activity: 784
Merit: 1004
Glow Stick Dance!
Are there no fans attached directly to the radiator? Really?! Does the case only have a single intake fan?
sr. member
Activity: 386
Merit: 250
my neptune crash down when i put 400 mhz and more\


whst to do
i had 2 corsair 1200 i
but i think is awful psu fina;

Can u run 2 cubes on one 1200i at 475 MHz ?
If this works just get a new smaller PSU for 1 cube.

Can u run 3 cubes on one 1200i IF THE OTHER ONE IS OFF?
You might be starving your AC circuit.
If you have a HEAVY DUTY 12/3  extension cord try one PSU on a different outlet.
copper house wire can corrode if the wall outlet screws are not tightened properly
(thats a hard one to troubleshoot)

You might try a housefan on the PSUs?

With Corsair it has been suggested to use only the DOUBLE PCIe cables
but
USE ONLY THE FIRST(closest to PSU) OF the 2 PCIe CONNECTORS
16AWG to first connector and 18AWG to second
I know as fact my Corsair single PCIe cables are only 18AWG
(lower is better for AWG)
I have AX760's but the replacement cables are same part numbers
I ran 2 cubes on 1 760 briefly 10-15 minutes hashing @ 475 MHz

Try possible solutions that do not involve spending lots of money FIRST. Smiley
Else throw money at bigger PSU's

Thx again u27 for that Corsair wire gauge detail!

YMMV
Smiley

EDIT
Run them 2 at a time and identify WATT for each cube
Try the 3 lowest watt cubes on one PSU
Try same 3 lowest watt on other PSU
Subdivide and conquor! Smiley
hero member
Activity: 700
Merit: 504
Run a Bitcoin node.
my neptune crash down when i put 400 mhz and more\


whst to do
i had 2 corsair 1200 i
but i think is awful psu fina;
Try one AX1200i per two Neppy modules?

I bought two AX1200i in preparation for my Neptune as KnC said that two 1200W PSUs would be sufficient. Looks like I need to buy a third PSU as the AX1200i reportedly struggles on startup when powering three modules.

PS I have my tracking number for my first-day Neptune order (2013 November 26 23:16).
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