Thank you for your reply! I am reading from the link you sent.
I think I may have just answered my own question. I found a list of OS systems and I am much more informed...
Find out which macOS your Mac is using - Apple Support
In regard to my post... I read the specs wrong. I took a several years off from editing and I am trying to catch up with everything. It looked like 10.13 was less than 10.8.5 but I see that is not the case. Yikes. I thought I was reading something like 10.1.3... Wow. Not the case.
Computer Specs
2012 Mac Pro OS 10.5, dual 6 core, 3.64GHz, 64GB RAM and editing off of a RAID drive
Video Cards Options: RADEON 7950 3GB, GTX680, RX 570 8GB, RX 560 4GB AMD Firepro
I want to know if a computer with the above specs will be compatible with DaVinci and if there will be performance issues, and if there are issues I am wondering how to resolve them ahead of time. I have not chosen the video card yet. I am going to read from the link you sent, hopefully find out more there.
The link you requested...
I was searching for DaVinci requirements yesterday and found 10.8.5... I also emailed DaVinci Resolve direct and they said I need 10.15.
DaVinci Resolve (free version) download for Mac OS X (freedownloadmanager.org)
Thanks for your help, feedback, or input.