7010, GPU upgrade

I have a stupid question, and long story short, I want to upgrade a Dell Optiplex 7010 MT with a graphics card to let my brother game on, I only have a (here’s the stupid part) a GTX 1080 laying around currently and was wondering the max graphics card length then case can fit, once again it is the MT version which I have heard to be a little more flexible when it comes to clearance. If I could get a number in terms of inches or cm that would be great. Thanks. (Yes I will be upgrading the PSU)