Here is my voltmod for the 4870, please tell me if you see anything wrong , I haven't been able to try it for myself yet because the 2nd card isnt here yet and i need to set up the water loop all at once

I used 3 x 10 Ohm metal film resistors in series. Note to any other first time volt modders like myself, that vddc point is a to solder to so make sure you are very practiced before you go for it.