Passing 5600MHz with 2600K!

[bjuderas]

Hi,
I hope someone can help me out here.
My 2600K does a 56x. But I wanted to go further.
When I put multi 56, I can't overclock with the base clock. With 56 multi, all I can do with the base clock is 100.1!
Is there something I can tweak to get some more MHz?
I have 2600K, Asus P8P67 deluxe and GSkill RipjawX Cas 6 1600MHz.
I'm sorry for my bad english and thank everyone for your answers in advance!