Anandtech reports that the MSI GT70 runs into heat throttling issues and the lack of cooling is really holding back the system. http://www.anandtech.com/show/7076/m...d-the-gtx-780m. That review is for the Dragon Edition, but I'm pretty sure it's almost the same as the one you posted from Newegg.
If you live in the US, might I suggest a Sager/Clevo machine from XoticPC or Mythlogic? Or if you don't feel up to customizing a machine, I hear that Alienware machines do a good job with cooling (but you'd be paying more with Alienware iirc)