Hard vmod is a go. Voltage can be dialed in from a 100k ohm petentiometer, wired onto the same resister used for the pencil mod. The second wire goes to ground. I also added a molex connector to easily monitor the voltages and hard wired the fan to the input power source, so it will be at 100% all the time, and can run faster. I might add a petentiometer to that in the future if noise is an issue, but its pretty silent, actually making less noise than the stock fan at 40%.