Post
Topic
Board Mining (Altcoins)
Re: Swedish ASIC miner company kncminer.com
by
bitdigger2013
on 18/10/2014, 03:43:46 UTC

photo storage

Well I thought I was ok with 2 PSU with stock AWG16 pci-e cables.

Above pic was from Strider 1200 Gold with stock AWG16 cables. It was running 2 of my 4 KNC Titan cubes.

Did this one plug run 2 cubes?  AWG16 are rated to handle 16A if you have top shelf 90C rated wires.  4 cable pairs at 12V is a pretty simple power calculation:  4 x 12V x 16A = 768W

Each cube takes 350W.  2 of these should be lower than the 768W max of those power lines, but you probably didn't take into consideration the plug is rated at 13A.  This is why the melting started near the plug, not it any wire kink.  Each cube should take a single plug directly from the power supply...with its own plug...this means no sharing.  3 cable pairs x 12V x 13A = 468W.  More than enough to handle the 350W required by the cube.

2 pcie plugs would have been a seriously cheap solution.  I think the real solution is to remove the crappy plug and hardwire 2x 8AWG lines to bus bars.   

Lesson learned: KnC cut corners, but buyer beware.  Do the math and save your ass.



No this one plug did not run 2 cubes. 1 Pcie per cube. 2 cubes per PSU. PSU rated at 1200 watts.