Help, MSi UEFI Memory Setup

Hey everyone. Just finished building my new gaming pc. Boost fine and I'm in the UEFI. Memory is at a 1333 but I have 1866. I tried search the web how to changeit but no luck. Other MOBO have different and easier setups.  Oh the MOBO I have is the MSi Z77 Mpower. Anyhelp would be great.

Thanks

Motherboard comes with user guide.  Read it.

Thanks for the input. I have read it. Just tells me how to view the memory setting. Not how to change it.

I found it. It's in the overclocking menu. All set..    This thread can be deleted

cool, msi is pretty vauge with their manuals then.