I had hands on testing of both the Alienware 14 (as reviewed here with the GTXM765) and a new Asus ROG G46VW (the upgraded version to the model reviewed in Notebookcheck in 2012)... and I agree with the above comment from Jayson. I wanted to like the Alienware, but there were too many points I wasn't happy with, and I eventually bought the Asus (G46VW, June 2013 specification, Intel® Core™ i7 3630QM and NVIDIA® GeForce® GTX 660M 2 Go GDDR5 and a clear, bright 1600 x 900 non-reflective display).
Since then I have played Bioshock Infinite, Borderlands 2 and several other new release FPS or RPG titles always at 1600 x 900 on high or ultra settings for several hours at a time. The G46 gets at most warm to the touch on the underside, with all of the keyboard area remaining cool to the touch. The noise from the dual fans becomes noticeable, but not intrusively and they are highly efficient, with the exit air temperature warm as opposed to my previous Toshiba where you could not keep your hand near the exit port for fear of cooking it!
I wanted a high power gaming and video processing machine in a 14" format. From my experience the Asus ROG G46VW (June 2013 spec.) is comparable on performance, of a better quality (my opinion), certainly much quieter, cooler, lighter and... a mind-blowing 900 EURO cheaper than the Alienware 14 equivalent in France. What can I say, why pay so much for what is at the end of it all, most disappointingly... a Dell laptop :-\