Ok so a few months ago I bought an Alienware m14x R2. I've really enjoyed this computer, it runs all the games I have bought and is very fast for a laptop. Altough it is a very good computer I seem to not be getting "Maximum Performance" I've seen videos of the Alienware m14x r2 playing minecraft FPS tests and most people, if not all, have gotten an FPS range of 70-120! I became confused after the first video I watched and made sure it was the same as mine and it turns out it was. I seem to only get a 25-40 FPS range while playing MC :/ Is there anything I need or am doing wrong to make the FPS so low to what it can be?

Computer Specs:
3rd Generation Intel® Core™ i7-3630QM (6MB Cache, up to 3.4GHz w/ Turbo Boost 2.0)
Windows® 7 Home Premium, 64bit
14.0" High Def+ (900p/1600x900) with WLED backlight
12GB2 DDR3 SDRAM at 1600MHz
256GB SSD SATA 6Gb/s
Slot Load Dual Layer Blu-ray Reader (Reads BD and Writes to DVD/CD)
2 GB GDDR5 NVIDIA® GeForce® GT 650M with Optimus™

(Information off of Alienware.com)