Jenkins Bentinomer

Hello everyone, my apologies if there is already a thread on this, but if there is, the search function can't seem to find it. Anyway, I have an Nvidia Optimus enabled laptop (i7/980m) and when I run the Tekkit pack through the launcher, minecraft uses the Intel GPU. Does anyone have experience with this or can anyone direct me to an existing thread that details how to run a modpack on the Nvidia GPU? Thank you.