Form Factor UDIMM

Warranty Limited Lifetim e

Specs DDR3 PC3- 12800 • CL=11 • Unbuffered • ECC • DDR3- 1600 • 1.35V • 256Meg x

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DDR3 240- pin DIMM

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

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.

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.