CPU: Intel® Core™ i7-4770K CPU @ 3.50GHz
GPU: GeForce GTX 1080 (8GB)
Linux KDE Neon User Edition 5.9 64bits
Blender 2.76b
BMW27 at 1920x1080@50%:
GPU - CUDA:
64/64 --> 00:01:53 (113s)
128/128 --> 00:00:55 (55s)
256/256 --> 00:00:41 (41s)
480/270 --> 00:00:38 (38s)
512/512 --> 00:00:38 (38s)
960/540 --> 00:00:40 (40s)
CPU:
64/64 --> 00:03:41 (221s)
128/128 --> 00:03:53 (233s)