WHAT IS DDR?
DDR (Double Data Rate) is twice as fast as SDRAM doubling the data rate transfer of SDRAM. These will only work in motherboards specifically designed to use DDR. WHAT TYPES OF DDR ARE AVAILABLE DDR200 / PC1600 200MHz Bus speed with a 1.6GB/second data transfer rate DDR266 / PC2100 266MHz Bus speed with a 2.1GB/second data transfer rate DDR300 / PC2400 300MHz Bus speed with a 2.4GB/second data transfer rate DDR333 / PC2700 333MHz Bus speed with a 2.7GB/second data transfer rate DDR400 / PC3200 400MHz Bus speed with a 3.2GB/second data transfer rate DDR466 / PC3700 466MHz Bus speed with a 3.
