Intel Core i7 i7-840QM 1.86 GHz Processor - Socket PGA-988 - Quad-core (4 Core) - 8 MB Cache

Very happy purchased usedNo issues quick install super difference in performance

I have the i7 840QM in my Alienware M15x, and also in one of my XPS15's, and they are super fast, and efficacy is the only word I can think of!!!!!! Intel Rocks-I do have an i5 in another one of my Xps15s, and it rocks, but the i7 840QM is the best on the market for laptop.

I have this CPU in my Alienware m15x laptop. This review is going to be short, because it does what it's supposed to do. Run fast, steady, and cool!! If you are into playing games, and/or drafting, you can't go wrong with this CPU.