DDR SDRAM (sometimes called DDR1 for greater clarity) doubles the minimum read or write unit; every access refers to at least two consecutive words.
Typical DDR SDRAM clock rates are 133, 166 and 200 MHz (7.5, 6, and 5 ns/cycle), generally described as DDR-266, DDR-333 and DDR-400 (3.75, 3, and 2.5 ns per beat). Corresponding 184-pin DIMMs are known as PC-2100, PC-2700 and PC-3200. Performance up to DDR-550 (PC-4400) is available for a price.
Etron Technology, Inc. (Taiwan GTSM: 5351) is a world-class fabless IC design and product company founded in February 1991, specializing in buffer memory and system-on-chips. As a leading manufacturer of buffer memories, Etron offers cutting-edge Known-Good-Die-Memory (KGDM) and Consumer Electronic DRAM (CEDRAM). Etron's full line of Buffer DRAM chips - available in densities ranging from 8Mb to 1Gb - is designed to ensure high processing speeds and low-power consumption for Consumer, Communication, Computer, and Car ( 4C ) applications. Moreover, Etron has developed many advanced system-on-chip (SOC) IC products, including USB3.0 host controller ICs, USB3.0 flash drive controller ICs, and 3D imaging and gesture-sensing integrated webcam controller ICs.
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Etron Technology, Inc. (Taiwan GTSM: 5351) is a world-class fabless IC design and product company founded in February 1991, specializing in buffer memory and system-on-chips. As a leading manufacturer of buffer memories, Etron offers cutting-edge Known-Good-Die-Memory (KGDM) and Consumer Electronic DRAM (CEDRAM). Etron's full line of Buffer DRAM chips - available in densities ranging from 8Mb to 1Gb - is designed to ensure high processing speeds and low-power consumption for Consumer, Communication, Computer, and Car ( 4C ) applications. Moreover, Etron has developed many advanced system-on-chip (SOC) IC products, including USB3.0 host controller ICs, USB3.0 flash drive controller ICs, and 3D imaging and gesture-sensing integrated webcam controller ICs.