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A dual inline memory module (DIMM) consists of a number of memory components (usually black) that are attached to a printed circuit board (usually green). The gold pins on the bottom of the DIMM provide a connection between the module and a socket on a larger printed circuit board. The pins on the front and back of a DIMM are not connected to each other. 240-pin DIMMs are used to provide DDR2 SDRAM memory for desktop computers. DDR2 is a leading-edge generation of memory with an improved architecture that allows it to transmit data very fast. Each 240-pin DIMM provides a 64-bit data path (72-bit for ECC or registered or Fully Buffered modules). (The Ballistix¿ and Ballistix Tracer¿ high-performance memory do not come in 72-bit or registered modules.) Standard DDR2 240-pin DIMMs are available in DDR2 PC2-3200 SDRAM, DDR2 PC2-4200 SDRAM, DDR2 PC2-5300 SDRAM, and PC2-6400 SDRAM. To use DDR2 memory, your system motherboard must have 240-pin DIMM slots and a DDR2-enabled chipset. A DDR2 SDRAM DIMM will not fit into a standard SDRAM DIMM socket or a DDR DIMM socket. The number of black components on a 240-pin DIMM can vary, but it always has 120 pins on the front and 120 pins on the back, for a total of 240. 240-pin DIMMs are approximately 5.25 inches long and 1.18 inches high, though the heights can vary. While 240-pin DDR2 DIMMs, 184-pin DDR DIMMs, and 168-pin DIMMs are approximately the same size, 240-pin DIMMs and 184-pin DIMMs have only one notch within the row of pins. The notch in a 240-pin DDR2 DIMM is closer toward the center of the module.
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Technical Details
- 240-pin DIMM- DDR2-667
- DDR2 PC2-5300 Unbuffered, ECC, DDR2-667, 1.8V, 256Meg x 72 - CT25672AA667
- The only brand of memory upgrade available directly from a DRAM manufacturer, tested to meet the most stringent industry specifications
- Install it yourself in about 15 minutes. The same top-quality memory that the worlds largest computer manufacturers install in the systems they sell
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By John M Flora (Brookland, AR United States)
I was looking for a way to tweak my new Dell Inspiron Mini 9 netbook and bumping it up from 1GB to 2GB of RAM was the logical place to start.
The Crucial package was on my doorstep days sooner than I expected.
Installation only took about 5 minutes and now my Mini 9 runs like a ferret on meth.
A great online shopping experience from start to finish.
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