However, the benefits of DDR2 SDRAM are coupled with significant physical implementation challenges at data rates above 400 Mbps. Not only does the bit period become extremely small at these data ...

At this point, DDR2 memories are available with clock speeds of 200MHz. (DDR2-400), 266MHz. (DDR2-533), and 333MHz. (DDR2-667). At such high speeds, one cannot take the risk of using a conventional ...