DDR2 supersedes the original DDR specifications with data transfer speeds up to 800 MT/s. The memory clock speed of the industrial DDR2 SDRAM was reduced by half compared to first-generation DDR, enabling DDR2 to effectively operate up to 2X the DDR bus speed.
Apart from faster operation, DDR2 also consumes less power than its predecessor. With its operating voltage reduced from 2.5V to 1.8V, DDR2 cuts overall power consumption.
ATP DDR2 modules are available in several form factors suitable for diverse applications, including 240-pin full-size UDIMMs, 200-pin SO-DIMMs are also available for compact systems. These form factors are not interchangeable with DDR, DDR3 or DDR4.
|DIMM Type||ECC UDIMM||Non-ECC UDIMM||Non-ECC SO-DIMM|
|Density||1 GB to 2 GB||1 GB to 2 GB||256 MB / 1 GB to 4 GB|
|Speed up to (MT/s)||800||800||800|
|PCB Height||Low Profile||Low Profile||Low Profile|
|Operating Temperature||0°C to 85°C / -40°C to 95°C||0°C to 85°C / -40°C to 95°C||0°C to 85°C / -40°C to 95°C|