Lightning - Dual Output Powercard

[hidethecookies]

yes , you need to pull up PSI pin of the controller to enable all phases and in most cases also gddr pwm!

 

The 6870 Hawk has the vram and pll phases on the left side of the card so I only have single output. Now I can use what was a dead card for something.

Edited January 25, 2017 by hidethecookies

[nachtfalke]

i got some free time and test this home made powercard in heavy load with HD7970 cascade cooled (builded by me last year) , nice to see that some users "copy" this (with my help ofcourse) and posted in FB some build based on 580L

 

for gpu VCC+ i use 6 (one is under the power card) copper strips 6mm each , each are solder were was the stock chockes ( amd reference use only 5 but pcb design was for 6 phases , so you have 6 points to solder VCC+)

 

for gDDR VCC+ i use 2 in paralell copper strips 4mm each

 

for GND i use 9 copper strips 4 mm(3 stk) and 6mm (6 stk)

 

i have only 5 to 7 mv droop from powercard output to back gpu side! in load at 1.6V

 

max gpu clock was 1680 -1700 , need to mod the pll to see if helps !

 

 

 

Edited April 23, 2017 by nachtfalke

[Gulftown]

Awesome job