The upcoming new generation of CPU processors from AMD and Intel in 2020 will also support DDR4 memory, but the next generation of DDR5 memory is already around the corner and will be officially launched in 2021. Today Micron announced that it has begun sampling the latest DDR5 memory to customers. Based on the 1Znm process, the performance has increased by 85%.
Compared with DDR4 memory, the DDR5 standard has stronger performance and lower power consumption, with a starting frequency of at least 4800MHz and a maximum of 6400MHz. Other changes include voltage reduction from 1.2V to 1.1V, 32/40 bits per channel (ECC), improved bus efficiency, and increased number of prefetched Bank Groups to improve performance.
Micron’s current sample of DDR5 memory uses the latest 1Znm process, probably between 12-14nm node, ECC DIMM specifications, frequency DDR5-4800, which is about 85% higher than the current DDR4-3200 memory performance, but it is far from DDR5- 6400 is still a little away, and there is still room for excavation in the later stage.
For DDR5 memory, platform support is the biggest problem. There is currently no platform that officially supports DDR5 memory. AMD is expected to replace the socket on the Zen4 processor in 2021 to support DDR5 memory, while Intel’s 14nm and 10nm processors have not specified DDR5 memory support. The official roadmap shows that the 7nm process Sapphire Rapids processor will be DDR5 only in 2021, and it is the first server product. Consumer-level estimates will have to wait.
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