We will be updating our benchmarks page in a couple of weeks showing the performance of core algorithms on individual hardware. We will be showing the peak capabilities of each device and how much of peak we are achieving. 

We as a library strive to achieve the best performance out of all compute devices available. If you want to have a more informal chat about the hardware performance with the arrayfire developers, please head over to this chat room here: https://gitter.im/arrayfire/arrayfire.