What Is DDR3 Ram

 DDR3 -- modules have greater speeds and more memory capacity than prior generations, though to take advantage of them, the memory sockets on the computer’s motherboard must match the DDR3 standard.      

D-RAM

• A computer’s main data storage takes the form of Dynamic Random Access Memory. This memory type achieves high capacity by using only one transistor per data bit, the fundamental unit of data. Each byte has its own unique address, making it instantly accessible.

DDR3

• Double Data Rate gets its name from the fact that it moves data twice every clock cycle. The clock is a high-speed electronic pulse having abrupt rising and falling sides. DDR moves memory on both the leading and trailing edges of the pulse, an improvement over earlier types of memory modules which moved data only once per pulse

 

Speed

• The DDR3 series of memory modules has four data rates: 800 MHz, 1,066 MHz, 1,333 MHz and 1,600 MHz. These correspond to data rates of 6.4 gigabytes per second, 8.53 GB/s, 10.67 GB/s and 12.8 GB/s. These rates are double those of DDR2 memory, which, in turn, were a twofold improvement over the original DDR series.

Capacity

• DDR3 memory modules come in exponents of 1 GB, including 1-, 2-, 4- and 8-GB modules. These capacities are double those of the DDR2 series, and DDR2 doubled the capacities of DDR. Within a series, you can mix and match modules of different capacities and speeds; the slowest modules sets the overall speed.

Power Consumption

• Each DDR3 module consumes 3 watts of power; this compares favorably with 4.4 watts for DDR2 and 5.4 for DDR. Lower power consumption translates to better energy efficiency and cooler operation of the computer.by j.tbarett