Taped lecture 3 from Fall 2007 Georgia Tech course ECE4893A/CS4803MPG: "Multicore and GPU Programming for Video Games." Lecture by Prof. Hsien-Hsin Sean Lee. The text on the screen is hard to read in the video, so this is best viewed along with the PDFs of the powerpoint slides, which may be downloaded from users.ece.gatech.edu/~lanterma/mpg. (I edited out a few awkward spots where people, including me, were walking in front of the camera - sorry for the glitches.)