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Double Data Rate 2 Synchronous Dynamic Random-Access Memory (DDR2 SDRAM) is a double data rate (DDR) synchronous dynamic random-access memory (SDRAM) interface. It is a JEDEC standard (JESD79-2); first published in September 2003. [2] DDR2 succeeded the original DDR SDRAM specification, and was itself succeeded by DDR3 SDRAM in 2007.
Informacje ogólne. Pamięć DDR2 charakteryzuje się wyższą efektywną częstotliwością taktowania (400, 533, 667, 800, 1066 MHz) oraz niższym poborem prądu. Podobnie jak DDR, pamięć DDR2 wykorzystuje do przesyłania danych narastające i opadające zbocze sygnału zegarowego. Pamięci DDR2 budowane są w obudowach FBGA (ang. Fine-pitch Ball Grid Array).
28 lis 2022 · Definition of DDR2 RAM. DDR2 SDRAM is short for Double Data Rate 2 Synchronous Dynamic Random-Access Memory, which can also be called DDR2 RAM. It replaced the original DDR SDRAM but it is replaced by DDR3 SDRAM. But DDR2 DIMMs are neither forward compatible with DDR3 nor backward compatible with DDR.
DDR2 SDRAM. In information technologies we use the term DDR2 SDRAM for a Double Data Rate memory module of the second generation. This technology is used for high speed storage of the working data.
DDR2 RAM is an improved version of DDR memory that is faster and more efficient. Like standard DDR memory, DDR2 memory can send data on both the rising and falling edges of the processor's clock cycles. This nearly doubles the amount of work the RAM can do in a given amount of time.
7 paź 2019 · While DDR2 RAM has data transfer rates ranging from 400 to 1,066MT/s, DDR3 smashes this at 800-2,133MT/s. Voltage is another important aspect of RAM generations. DDR2 RAM uses 1.8V, while DDR3 is lower at 1.5V. Lower voltage means the RAM uses less power, thus putting less strain on the CPU.
DDR (DDR1) was superseded by DDR2 SDRAM, which had modifications for a higher clock frequency and again doubled throughput, but operates on the same principle as DDR. Competing with DDR2 was Rambus XDR DRAM. DDR2 dominated due to cost and support factors.
