OCZ Gold gold showing PC4200

[Born_2_Kill_83]

I have OCZ Gold PC6400 and after overclocking my CPU ive set the ram divider to 1:1 (355*9) does this have anything to do with it being displayed as PC4200 on my boot up screen? Is there anyway I can set it back to stock PC6400?

 

[Born_2_Kill_83]

You'll need to increase the volts to make it run at PC6400.

My current volts on the ram are set to auto in the Bios, when I increased them to 2.1V i didnt notice it change, but it might have done?
Does this fool it again thinking im runnin slower PC4200 memory?