Mac OS eGPU performance with dual displays
Does adding a 2nd display to your eGPU setup improve graphic performance in Mac OS?
Some posts on the internet and YouTube seem to suggest as much.
Here's an example of what triggers them:
As you can see from my results, Mac OS Metal and OpenCL compute scores almost double with a 2nd display attached to my eGPU.
And it's easy to determine if Geekbench's reported gains in eGPU performance are legitimate.
I ran the following (more reliable) benchmark tests with and without my 2nd display attached :
Basemark GPU Metal
Indigo Render Benchmark Open CL
Blender 2.79b Cycles GPU render Open CL
Unigine Valley Benchmark Open GL
Not really a big spoiler here - I ran those benchmarks each way, and - no, the (alleged) performance gains shown by Geekbench are not reproduced in the other software.