How can SHIELD Portable play PC games?

NVIDIA uses the H.264 encoder built into Kepler-based GeForce GTX 650 or higher GPUs along with special streaming software integrated into an upcoming version of GeForce Experience to stream games from the PC to SHIELD Portable over the user's home Wi-Fi network with ultra-low latency. Gamers use SHIELD Portable as the controller and display for their favorite PC games as well as for Steam Big Picture. This enables gamers to get a GeForce GTX PC gaming experience anywhere in their home Wi-Fi network.