GPUs takes long time to render

[YAFU (English is not my native language)]

Hi.
Could you run this benchmark and share the results here?

The new Cycles GPU 2.79 Benchmark

Hi all, here is thenew Cycles GPU benchmark for Blender 2.79 This time for AMDand Nvidia cards! After some chat withthe Cycles developer we use 256x256 Tiles again. It is the bestcompromise for Cuda, OpenCL and different cards. Please use officialBlender 2.79 only. Please use only one GPU. Open file, hit F12(AMD user can render twice because of compiling kernels), write down: OS GPU Render time Please use orginal Blender stamp format xx:xx.xx Please don´t upload images, render time an…

1070 only
1080 Ti only
1070 + 1080Ti

You do not modify any parameter of that .blend file, you only choose the corresponding GPU from User Preferences.