The EP45-UD3 also makes a very bold statement on the DDR2 front, claiming official support of blisteringly quick DDR2 1366+ MHz speeds. Most motherboard manufacturers are hesitant to break the 1200 barrier, but it appears Gigabyte are keen to push the boundaries of ram speed up a notch. This is due in part again to the increase of copper, which improves power efficiency by reducing circuit impedance by 50% and allowing more bandwidth for electron passage. This in turn results in less power being wasted. Less power equals less heat equals more overclocking headroom.