I agree with the above, but it was the one I bought for my windows PC when they first came out. I tried swapping it into my MP 2010 at the beginning of the year running Sierra with extremely poor results. (Reboots, crashes, etc.) I am now running it in the same MacPro with High Sierra and all seems to be fine (though I have to run fan control, but that might just be a result of two GPUs).