Last week DxOMark released the Nikon D850 DxOMark sensor test score and labeled the D850 as the "first DSLR to hit 100 points". There have been three more cameras in the past that scored above 100 (many websites described DxOMark's rating of 100 as a perfect score and it is not - it's just a number that can go above 100):
The RED Helium 8K camera got a 108 DxOMark sensor score (the RED Epic Dragon camera got 101):
The Pentax 645z scored 101 at DxOMark but the results were never officially published (nobody knows why):
Here is the current list of top rated cameras according to DxOMark (click for larger view):