Hi SXP, thanks for your comment.
You might want to check out Mark Litwintschik's posts (independent blogger who has benchmarked this dataset across many different databases) for performance on GeForce GTX TITAN X's.
4 x GeForce GTX TITAN X: http://tech.marksblogg.com/billion-nyc-taxi-rides-nvidia-tit....
8 x K80s: http://tech.marksblogg.com/billion-nyc-taxi-rides-nvidia-tes....
He has additional posts on MapD on Pascal Titan X's and AWS as well.
In full disclosure I work at MapD...