GPU rendering is greyed out in Project settings.

[Gerald0101]

GPU rendering is greyed out in Project settings.

Software only is only choice.
 
System info:

Hardware Overview:

Model Name: iMac
Model Identifier: iMac17,1
Processor Name: Quad-Core Intel Core i5
Processor Speed: 3.2 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Memory: 16 GB
Boot ROM Version: 178.0.0.0.0
SMC Version (system): 2.33f12

    Application: Premiere Pro (Beta) v14.5.0.18
    OS: macOS v10.15.5, RAM: 16.00 GB, CPUs (logical): 4

[R Neil Haugen]

I'm not a Mac expert, but from what I can see of specs for that type of Mac, it may not have a 'modern' GPU in it, one that can be used by Premiere.

So ... what is the GPU or graphics processor for that computer?

Neil