Hello, With some quick searching I could not find any similar issues as this one, so forgive me if it has been asked before. I recently purchased a used GTX670 card to use with my Mac Pro 4,1 (flashed 5,1) running Sierra. Everything works for the most part, but I noticed that in the system profiler the card shows as a GTX690 rather than 670. I thought it could be a driver issue, so I downloaded the latest web drivers using the NVIDIA webdriver update app, but it still shows as a 690. I am also having random shutdown/restarts since installing the card. As of now I have not been able to pinpoint anything in particular that is causing the restarts. My kids could be playing games for hours without anything happening, then it may randomly restart when using an internet browser. This computer is currently being used for internet browsing, media viewing and now game playing (mac side, no windows) for my kids. I really don't know a whole lot about graphics cards, so any information would be greatly appreciated. Thanks!