All right, here's my problem. I'm looking into buying a new laptop, and I've broken it down to two choices: an Asus model #Q400A-BHI7N03 with an Intel® HD Graphics 4000 card and another Asus model #U47VC-DS51 with a nVidia GT 620 card. Both have 8GB of active memory and 750GB of hard drive space. Either way, I want a new and better graphics card installed, and what I really want is the nVidia GeForce GTX 650 (Ti?), possibly even a little higher. But I don't know if it is compatible with either of the above laptops. The last time we bought a new computer and got a new graphics card for it, the system power requirements for the card were not met by the computer and a better power supply had to be installed for the card. And there may be other things that would make the card incompatible with the two laptops as that I don't know about. Can anyone help me out? Any help would be much appreciated.