Please write me, is it possible tu upgrade me notebook Alienware M17x R2 with i7-740m to i7-3630QM?
The answer might be negative. Please compare Core i7-740QM with Core i7-3630QM, there are some differences on their specs. Besides that, Core i7-740QM is the first generation product, while Core i7-3630QM is the third generation of core i7. So you could not upgrade your i7-740QM to i7-3630QM. Never take adventure!