Some Thoughts on Half-Life 2 and Portal on Shield
 

If you talked to me seven years ago, the concept of phone games beyond Snake and basic flash games would've been beyond me. That wasn’t really on my mind, especially because playing games like Battlefield 2 effectively required a desktop. I did try it on a Dell XPS M170, with an Nvidia 7800 GTX graphics card, 1 GB of RAM, and a Pentium M processor, but even then, it was no guarantee that it would load the game consistently. Crashes to desktop were common because of the RAM requirements, and hitting the page file would cause frustrating freezes. Of course, things have completely changed since then. Mobile became one of the fastest growing sectors in the tech industry, 40-60mm thick, 14 pound laptops were no longer necessary to play games at acceptable IQ/FPS levels, and the slate-style smartphone has gone from distant curiosity to everyday necessity.

http://www.anandtech.com/show/8043/s...rtal-on-shield