Latest Memory

This article is an update of all the latest Memory module found in the latest Intel Pentium 4/Core Dual & AMD Opteron/AM2 driven PC, the last article was published in June 2005.

240pin Unbuffered DDR3 DIMM

240-pin DDR2 Unbuffered DIMMs are used to provide DDR3 SDRAM memory for the next generation of new servers and motherboards that use DDR3 technology. DDR3 is a leading-edge generation of memory with an improved architecture that allows it to transmit data very fast. .

Each 240-pin DDR3 DIMM provides a 64-bit data path (72-bit for ECC or registered modules).

DDR3 SDRAM will be packaged in a DIMM modules form factor.

DIMM Module Chip Type Clock Speed Data Rate Transfer Rate
PC3-6400 DDR3-800 400 800 6,400
PC3-8500 DDR3-1066 533 1066 8,530
PC3-10667 DDR3-1333 667 1333 10,660
PC3-12800 DDR3-1600 800 1600 12,800
PC3-14900 DDR3-1866 933 1866 14,930


DDR3 240-pin Unbuffered DIMMs are available in DDR3 PC3-6400 SDRAM and DDR3 PC3-7000 SDRAM. .

To use DDR3 Unbuffered DIMMs, a DDR3 server or motherboard must use DDR3 architecture. A DDR3 DIMM will not fit into a standard DDR2 , DDR2 FBDIMM and DDR socket.

The number of black components on a DDR3 240-pin DIMM varies and similar to DDR2 DIMM, 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.

The notch in a 240-pin DDR3 DIMM is in a different location than the notch for regular 240-pin DDR2 & FBDIMM modules.