What should my memory be running at?

[kortex]

When I boot up, it says my memory is running at 1066mhz and it should be running at 1600mhz. What do I need to change so that I only change what my memory is running at and nothing else? Here is a screenshot from CPU-Z.... My motherboard is an asus P6T deluxe v.2. Thanks .

 

[mindless728]

did you manually set the memory speed, timings and voltage in the bios

 

[kortex]

I haven't changed anything since it said 7-7-7-20... I'm not sure what to change because there are so many settings.

 

[kortex]

What do I set the settings to in the bios? I'm confused.