My name is Yordi.
I resently did a volt mod on my videocards, because there is no possible way to overvolt by software.
I have made some pictures of the volt-mod and some data to show you how i did it.
I have two Sapphire HD5870 Vapor-X O.C. cards in crossfire.
They are cooled by the EK FC5870 V2 (Water cooling).
The temp of the cards at full load is max 49 C.
At stock voltage i can overclock these cards at max 950/1250.
This is how the PCB looks like.
I measured the voltages and the resistance of my cards.
GPU1 : idle v-gpu 1.035 v idle v-memory 1.608 v load v-gpu 1.204 v load 1.619 v.
GPU2 : idle v-gpu 0.951 v idle v-mem 1.597 v load v-gpu 1.136 v load 1.615 v.
On the fb of the up6213 i measured 5.02 kohm.
On the imax/ocp of the up6213 i measured 10.03 kohm
On the fb of the up6101 i meadured 5.02 kohm.
So i want to tune the resistance down of both the FB`s so the voltage of the mem and gpu will rise.
Data up6213 :
Edited by lampje - 8/25/13 at 10:53am