ATI 4850/4870 voltmod thread

[DemonEyez]

Did some measuring and this is what I found on my Asus HD4850:

idle vgpu 1.05v full load vgpu 1.15v

idle vddr 2.01v full load vddr 2.01v

So it seems that my vgpu is somewhat lower on this card than on Jimmiz's who measured 1.20v for his vgpu

Demoneyes: please can you take a DMM to the points marked (in blue) and tell me the resistance? (thanjks for the pics BTW!)



K

Left pin I got 3.93Kohm

So 3.93K Ohms = 2.01V

[JamesBong420]

@demoneyes
thanks alot. just in the nick of time.. getting off work in 50 mins.. run down and grab me some VR's..

i see some people on hwbot have 1150+ mhz on the mem.. and i can only do 1085mhz.. so i shall see if a little voltage will help.. tide me over until we get more control over the core clocks..

all i know is the s1 is dieing for more volts i mean 37c fully loaded, beats the 81c loaded i had on the stock cooler.

[JamesBong420]

well just my luck.... imma have to order everything i will ever need for any future mods. my local radio shack no longer carries 100k trimmers(pots)..

so will a single turn micro trimmer work? as long as i turn it millimeters?