A:Answer Yes, it is backwards compatible, but you will take a minimal hit in framerate or frames per second. I saw some articles on the web saying 1 to several frames which is negligible with a card this powerful, in other words you would never actually see a difference in real world use.
If you are a nerd like me, check out this excellent deep dive video on Gamers Nexus and breath a deep sigh of relief!
https://www.youtube.com/watch?v=0DKVVtirNM8