DDR memory technology has matured and reached its limitations at 400MHz, the fastest speed that DDR memory is expected to support in high-volume. DDR2 is the next-generation evolution of DDR memory technology. DDR2 memory features faster speeds, higher data bandwidths, lower power consumption and enhanced thermal performance.
Key DDR2 features:
- 1.8 Volts operation, reducing power consumption by about 50 percent
- Memory signal termination inside the memory chip ("On-Die Termination") to prevent reflected signal transmission errors.
- Operational enhancements to increase memory performance, efficiency and timing margins.
- CAS Latencies: 3, 4 and 5
- 400MHZ and 533MHz and capacities up to 1GB currently.