DDR2 vs DDR3 RAM
DDR 2 has clock rate of 200-533MHz, with transfer rates up to 1,066MTps, and a power consumption of to 1.8 volts. DDR3, of course, was an improvement over DDR2. It featured a clock rate of 400-1,066MHz, a maximum transfer rate of 2,133MTps, and power consumption of to 1.5 volts. So basically, it’s faster, stronger, better.