Crucial 2GB Memory Kit (2x1GB) PC3-8500 1066MHz DDR3 Unbuffered Non-ECC CL7 240-pin DIMM

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Crucial 240-pin DIMMs are used in DDR3 memory for desktop computers. DDR3 is the latest generation of memory with an improved architecture that allows it to transmit data more quickly. 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.


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 DDR3 240-pin DIMMs are currently available in DDR3 PC3-8500 SDRAM. Additional speeds will be added as the technology becomes available. To use DDR3 memory, your system motherboard must have 240-pin DIMM slots and a DDR3-enabled chipset. This is because a DDR3 SDRAM DIMM will not fit into a standard DDR2 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 DDR3 DIMMS, 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.


Memory Size

2048MB (2 module(s) x 1024MB)

Memory Type


Memory Speed


Memory Package




Pin Configuration

240 pins

Bus I/O Configuration


Error Correction


CAS Latency


Module Configuration







13.34cm (W) x 3.0cm (H)


  • Crucial Memory Module Kit
  • Module Size: 2GB kit (1GB x 2)
  • Package: 240-pin DIMM
  • Feature: DDR3-1066MHz PC3-8500
  • Bus I/O Configuration: Unbuffered
  • Error Correcting: Non-ECC
  • CAS Latency: 7

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Catalogue No: EL-04030697