Performance & Perf-Per-Watt From NVIDIA's GeForce 9800GTX To GTX 1080

Now that my initial GeForce GTX 1080 Linux review is out the door, I spent this weekend working on a "fun" comparison out of curiosity to see how the raw OpenGL and OpenCL performance has improved over the generations going back to the once-powerful GeForce 9800GTX plus including the top-end cards of the GeForce 600/700/900 Kepler and Maxwell series too.