Ok, just got done with the pencil mod and my first impression is that it works great! I have my memory set to 2150MHz right now (still raising it) testing with OC scanner with "unlock power draw" check and it seems stable. Just to show what a difference this makes my memory was capped at around 1960MHz. The default voltage on my mem was 1.53v and I raised it to 1.62v. I have my card underwater so anyone planning to do this mod on air may want to keep it around 1.6v or less.
Instructions for the mod:
Also 1 more time watch your voltage as soon as you turn the rig on!! I can not stress that enough!
read default volts of ram while booted .then turn off rig and measure resister..say its 615 pencil lightly \\ then measure again not going more then 020 lower.boot rig and measure ram volts.
then you know how much each decrease in resistance will add to your ram volts.
1.58ish for me is good for 2150 ish will try for more today.
no need for much higher volts then 1.59 or so.