256Mb PC2100 DDR RAM
DDR memory technology is an evolutionary improvement of mature PC100 and PC133 SDRAM technology.
DDR is the acronym for Double Data Rate Synchronous DRAM (SDRAM). DDR SDRAM memory technology has evolved from mainstream PC66, PC100 and PC133. This new memory technology enables a new generation of higher performance computer systems, including desktops, workstations, servers, portables, as well as new communications products such as routers and switches. DDR memory technology is currently widely used in high-performance graphic adapters.
DDR DIMMs have the same physical dimensions as SDRAM DIMMs, but have a different footprint that uses 184 pins compared to 168-pin SDRAM DIMMs. Therefore, DDR memory technology is not backward-compatible with SDRAM and requires motherboards and systems especially designed for DDR.
Higher performance over mainstream PC100 or PC133 memory
Up to 2.1 GB/sec of peak bandwidth using PC2100 DIMMs
Detailed Specifications
JEDEC Standard
184 pin DIMM, ECC or non-ECC
DIMM Lead pitch: 1.27 mm
200 pin SO-DIMM (Preliminary specification)
2.5 Volts
SSTL-2 I/O Interface
CAS Latencies: 2, 2.5
SPD Support
Support for Memory Chip Stacking
