Not a whole lot lower though, only in the 10-100x lower range from what I've experimented with (couple generations old card vs couple generations old i7 with a

Not a whole lot lower though, only in the 10-100x lower range from what I've experimented with (couple generations old card vs couple generations old i7 with a straight up "process some floats" test[0]). Certainly enough to test your kernels against. [0]: https://github.com/krrishnarraj/clpeak https://github.com/krrishnarraj/clpeak