Mac Pro: OpenCl rendering: max path depth

[tornello]

Hello I have a Mac Pro and I can't understand 2 things
I have 2 AMD FirePro D500 3 GB and when I open Indigo render settings I see in the list of OpenCl also the Intel Xeon CPU E5-1650 see screenshot

1) When I use OpenCl rendering is it better to use also Xeon CPU?
2) What is the numbers of "max path depth" to use?

Thank you to read my terrible english

[lycium]

To answer your questions,

1. It's probably better not to use the CPU, though you are welcome to do a quick test to see if it helps

2. It's the number of bounces of light to compute with the GPU, I think you could use a default value of 8 and maybe try higher if you have very complex glass scene or something.

[tornello]

Hello and Thank you very much for your answers

I am testing last Indigo for the first time and so 8 is default number, regardless of the power of the PC?

[lycium]

Yes, it only affects the number of indirect illumination bounces; 8 is fine for basically all scenes except with complex glass reflections and refractions.

[tornello]

Thanks