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JEDEC Extends DDR5 Memory Specification to 8800 MT/s, Adds Anti-Rowhammer Features
by Anton Shilov on April 22, 2024 8:00 AM EST When JEDEC released its DDR5 specification (JESD79) back in 2020, the standard setting organization defined precise specs for modules with speed bins of up to 6400 MT/s, while leaving the spec open to further expansions with faster memory as technology progressed. Now, a bit more than three-and-a-half years later, and the standards body and its members are gearing up to release a faster generation of DDR5 memory, which is being laid out in the newly updated JESD79-JC5 specification.
Now, a bit more than three-and-a-half years later, and the standards body and its members are gearing up to release a faster generation of DDR5 memory, which is being laid out in the newly updated JESD79-JC5 specification. Meanwhile, the addition of higher speed bins is perhaps enabled by another JEDEC feature introduced in this latest specification, which is the Self-Refresh Exit Clock Sync for I/O training optimization. But in exchange for systems willing to wait a bit longer (in terms of cycles) for a result, the new spec improves the standard's peak memory bandwidth by 37.5%.
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