Question Why im can't oc ram higher

[MansterZQ]

My motherboard ( Z77 Pro 4 ) Can oc to 2800MHz but in BIOS im can oc max to 2133MHz, How im can "unlock" the BIOS?

My Bios version is: P1.80

 

[julienruc]

What is the speed of the RAM you bought?

 

[MansterZQ]

GR1333D364L9/4g im have 2x4GB

 

[MansterZQ]

This is my 8 years ram's so in 2012 im not think to oc this ram