Hi
You will mostly see user to user help on this forum ,fans posting.
You should first try to up the voltage of the DRAM to 1,6-1,65V before setting 1333Mhz.
The board does work with 1333Mhz RAM with any CPU you can put in.
It might be a compatibility problem with the RAM ,but it shouldn t happen.
Motherboards with UEFI have UEFI BIOS ,the Hybrid ones will not receive updates to UEFI ,this is my hunch.
Ask Gigabyte support if you need more info on this though.