DDR-smallDDR SDRAM was the follow-on technology to SDRAM and is the predecessor to subsequent generations of DDR2 and DDR3. DDR provides a lower voltage level and higher data transfer compared to SDRAM. The voltage level is reduced from 3.30 volts to 2.50 volts and the memory module provides a data transfer on both transitions of the clock signal. This produces more data transfers for a given clock speed, but with the drawback of increased latency.

Virtium supports industrial DDR modules in a wide range of configurations and features that are available in 184 and 200 pin DIMM and 200 pin SODIMM form factors.


Densities 256MB,  512MB, 1GB, 2GB and 4GB
Form Factors DIMM, SODIMM and Mini-DIMM
Height Standard, VLP and Blade VLP
Type Registered or Unbuffered
Error Correction ECC or Non-ECC
Speed PC3200, PC2700 and PC2100
Data Transfer Speed (MT/s) 400, 333 and 266
Voltage  2.5 VDC
Standard Temp.  0°C to 85°C
Extended Temp. -25°C to 95°C
Industrial Temp. -40°C to 95°C
Configuration x8 and x4
Rank Single, Dual and Quad
Warranty 5 Years