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DDR-2 SDRAM supersedes DDR-1 SDRAM specifications. Like DDR-1 SDRAM, it also transfers data on both rising and falling edges of bus clock signal, but also, it runs the internal clock at half the speed of the data bus. Thus, DDR2 memory operates almost at twice the external data bus clock rate as DDR may provide twice the bandwidth with the same latency.

DDR2 SDRAM modules are internally configured 4 or 8-bank DDR2 SDRAM devices. DDR2 SDRAM modules use DDR architecture to achieve high-speed operation. DDR2 architecture is basically 4n-prefetch architecture. DDR2 is designed to transfer two data words per clock cycle at the I/O pins. It consumes less power which is 1.8v as compared to its predecessor DDR-1 SDRAM which requires 2.5v. Long-DIMM (or Desktop RAM) comprises of 240 connector pins, whereas SO-DIMM (Laptop RAM) comprises of 200 connector pins. It typically has data transfer rates of PC2-3200 (400MT/s), PC2-4200 (5300MT/s), PC2-5300 (667MT/s), PC2-6400 (800MT/s), or PC2-8500 (1066MT/s). PC2-8500 (1066MT/s) is usually possible with certain Processors and/or over-clocking, which should be supported by Processor, Motherboard & RAM at tandem.

2gb-ddr2-800mhz-small-dimm
ItemCode SDRAM CapacityDIMM MHz Buffer ECC PIN PC-Speed CL ns Module Density DQ

DLD1GD2-80

DDR2

1GB

Long

800

Un-Buffered

Non-ECC

240

PC2-6400

6

2.5

128Mx64bit

x64

DSD1GD2-80

DDR2

1GB

SO

800

Un-Buffered

Non-ECC

200

PC2-6400

6

2.5

128Mx64bit

x64

DLD2GD2-66

DDR2

2GB

Long

667

Un-Buffered

Non-ECC

240

PC2-5300

5

3

256Mx64bit

x64

DSD2GD2-66

DDR2

2GB

SO

667

Un-Buffered

Non-ECC

200

PC2-5300

5

3

256Mx64bit

x64

DLD2GD2-80

DDR2

2GB

Long

800

Un-Buffered

Non-ECC

240

PC2-6400

6

2.5

256Mx64bit

x64

DSD2GD2-80

DDR2

2GB

SO

800

Un-Buffered

Non-ECC

200

PC2-6400

6

2.5

256Mx64bit

x64

Dolgix is manufactured by OM Nanotech Pvt. Ltd., India.
Om Nanotech manufactures products under brands Dolgix, Dolgix Gold, Zipmem.

Dolgix is registered trade mark of OM Associates Pte. Ltd. Singapore. All Rights Reserved. All trademarks and logo are property of their respective owners