you have the 980X and you're not overclocking it?
Officially the i7s only support 1066MHz RAM, but every single X58 board goes up to 1866 or even 2000MHz. Also, a lot of RAM comes with XMP profiles to do the settings for you (and yes, it's done through overclocking).
As to your RAM being better, that depends on the RAM. What are you doing with the system, why do you want 12GB, etc., etc.