For those interested in articles like these, there's a really great course on iTunes U (and YouTube, among other places) from UC Davis titled "Graphics Architecture", taught by John Owens. [1]

I clicked on it being tangentially interested in GPUs and ended up watching all the lectures within the next few days with rapt attention. The topic ended up being far more interesting than I thought and was delivered in a very approachable way.

[1] https://itunes.apple.com/us/itunes-u/graphics-architecture-w...