Well, you can train your own models on the CPU for real-time object detection tasks using the SOD ML library we just released recently
https://sod.pixlab.io/samples.html for some code samples.
The commenter asked how the performance compares to an NVidia 1080Ti GPU.
A precise benchmark may not be necessary but in general, it will take for example how many Skylake cores at 3.5 Ghz to approximate the GPU example?