Ram not running full speed

FinL2K

Prominent
Jul 5, 2017
6
0
510
I purchased 2×4gb 1333mhz of ram patriot and my motherboard can run 1600 and 1333 and 1066 and the thing is in bios its auto and i can change to 1066 and 500something and when im statrting bios it shows its runing 1066 and in speccy shows 533 so times 2 its 1066 how can i make 1333?