What makes DDR2 faster?
DDR2 is capable of higher clock speeds because it implements new chip technology that facilitates better signal integrity. One such feature is ODT (On-Die Termination) which improves the signal integrity of the memory data channel, enabling more efficient system operation and lower overall system cost. The DDR2 standard also requires a 4-bit prefetch, while DDR utilizes a 2-bit prefetch. Additionally, additive latency (AL) helps avoid collisions and gaps in data input/output bursts. back to top • Does this mean DDR2 uses more power? No, DDR2 operates using less power than DDR. While standard DDR uses a 2.5V-2.8V supply for core and I/O voltage, DDR2 uses a significantly lower voltage of 1.8-2.1V. back to top • Are DDR2 modules backward compatible? No. DDR memory sockets can only support DDR. DDR2 and DDR have a different pin count are not interchangeable. To prevent the accidental installation of incompatible memory, DDR2 modules will not fit in a DDR slot due to the shifted DIMM modul
