Faster RAMs catch the bus

Rambus and its partners have disclosed that they are to deliver RIMM module solutions with a bandwidth of up to 9.6 GB/sec by 2005.

By upping RDRAM frequencies to 1200MHz and increasing bus width to 32 and 64 bits, Rambus and its partners have disclosed that they are to deliver RIMM module solutions with a bandwidth of up to 9.6 GB/sec by 2005.

This five-fold increase in module bandwidth exceeds the anticipated performance requirements of PC main memory with minimal changes to the existing RDRAM device and infrastructure.

Samsung, Toshiba and Elpida intend to produce both 1066MHz and 1200MHz parts. The new PC1066 and PC1200 RDRAM devices will become available in volume production in 2002 and 2005.

In addition to RDRAM device frequency increases, the RIMM module width will be increased from its present 16 bits to 32 and 64 bits. This extension effectively doubles and quadruples the RIMM module bandwidth.

The 16 bit, 32 bit, and 64 bit RIMM modules are expected to coexist and to ship into different segments of the market, from low-end server and workstation to mainstream and value desktop PC. Since there are no functional changes to the RDRAM device, the same part can be assembled onto any width RIMM module.

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