Certainly. I performed three benchmarking tests by following the instructions
here. Following are my results & method.
First Export: 64 seconds
Quit/Relaunched Final Cut Pro X
Second Export: 56 seconds
Restarted computer
Third Export: 64 seconds
View attachment 232928
Based on my scores, it seems to me that my Nvidia 980 Ti is better suited for Photoshop work than for video editing/exporting via Final Cut Pro (which is where AMD GPUs shine, I think). Additionally, any Mac with an Xeon processor and an updated GPU (even via PCI 2.0) will perform much better executing brute force power functions due to the additional CPU cores they possess.