DDR

The abbreviation of DDR is Double Data Rate and it is a type of memory integrated circuit used in Central Processing Units (CPU) of the computers.  The bandwidth of the double data rate (DDR) is twice that of the single data rate (SDR). The twice bandwidth is achieved by transferring data of the clock signal on the rising and falling edges and not making any changes in the clock frequency.  The DDR SDRAM can give a maximum transfer rate of 1600 MB/s for a bus frequency of 100MHz.

 JEDEC (Join Electron Device Engineering Council) solid state technology association has set some standards for the speed of the DDR SDRAM. The standards are divided into two parts, where the first part is for the memory chips specification and the second part is for memory module.

TRUMP 2 GB (2x1 GB), PC 3200 DDR 400Mhz LO DIMM, Non-ECC Memory Modules (2)
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MICRON MT8VDDT3264AG 256MB DDR PC3200 Memory Module
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KHX4300/512 KINGSTON KHX4300/512 512 MB MEMORY MODULE - DDR SDRAM - 533 MHz
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1GB DDR2 PC6400 800MHz PC2 6400 1 GB Low Density Memory
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HP Compaq D330 1GB DDR PC3200 400MHZ Desktop Ram Memory
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512MB stick of ram. Made by Samsung
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HP Z540 1GB DDR PC3200 400MHZ Desktop Ram Memory
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2GB (2 X 1GB) PC3200 400MHz Kingston memory KTH-D530/1G
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3GB (3X1GB) KINGSTON PC2-5300U DDR2/667 667MHZ SDRAM KWK007-ELC
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HP z558 512MB DDR PC3200 400MHZ Desktop Ram Memory
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1GB (2X512MB PC2-5300F-555 HYNIX 1RX8 HYMP564A72BP8D2-Y5 DDR2 FOR MAC PRO
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SUPER TALENT 1GB (2X512MB) PC2700/DDR/333MHz DeskTop Memory D27PB12C
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2 x 512MB Crucial Nanya 1GB 184-pin PC3200U-30330 DDR-4000MHz-CL3 (DIMM Memory)
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128MB DDR MEMORY RAM PC2100 NON-ECC DIMM 184-PIN 266MHZ
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Compaq X07 Gaming PC 512MB DDR PC3200 Desktop Memory
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Micron  128MB 184p PC1600 CL2 8c 16x8 DDR DIMM BUW MT8VDDT1664AG-202A1
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2GB (2X1GB) DDR400 PC3200 Corsair RAM
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IBM 512 MB DDR 266 MHz PC3200 Desktop Ram Memory 10K0070
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IBM 512 MB DDR 266 MHz PC3200 Desktop Ram Memory 09N4307
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IBM 512 MB DDR 266 MHz PC3200 Desktop Ram Memory 33L3306
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NANYA 2GB(2X1GB) PC2-4200U-444 2RX8 533MHZ NT1GT64U8 DDR2 667MHZ SDRAM
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