Yes, its a good way, the 10k at 8k method. 8k gives me around 1.58v or so when starting out so its quite safe. Of course tweak the pot bit by bit when the computer is off. I grounded it to one of the grounded pins at the back of my card by solder. It might easier for you to ground it to the card slot handle with screw or the motherboard grounded screw hole with screw. Make sure both ends (the soldered joint and the ground side) are quite secured cos if running high voltage and high speed, if the joints break off when running the card, the sudden huge drop in voltage can kill your card instantly. You can use a bit of blue-tack or silicone to help strengthen the joint, and just peel off the blue tack or silicone when you wanna reverse the mod.