Macpro 5.1 and SugarFX Revolve 360

I would like to know if a Macpro 5.1 configured as this is just as powerful as a $5000 iMac. I am asking because I want to run the Sugar FX Revolve plug in without it bogging down my machine. Here is my current config:2-core Mac Pro 5,1
2 x 3.46GHz Xeon Processors
32GB (8 x 4GB) 1333MHz Memory
Nvidia GTX 980Ti card.
1TB SSD - with AIC PCIe upgrade option
Three 2TB 7200rpm hard drives (installed in SATA bays 2-4; bay 1 open)
Apple RAID Card
SuperDrive
WiFi + Bluetooth
macOS 10.13 High Sierra
I want to know if I changed the video card to a GTX 1080 8GB will be enough to make it work like I saw on MacBreak Studio several months ago.