for DDR3-1066 and 7-7-7-24 for DDR3-1333. But the clock rates are faster with DDR3, delivering slightly faster prefetches. Another significant advantage of DDR3 is its energy efficiency . DDR3 runs on 1.5V versus 1.8V for DDR2, resulting in a 30% reduction in power consumption. The DDR3 advantage over DDR1 is even more