Although Intel sold its flash memory business and ended its cooperation with Micron to develop 3DXpoint chips, Intel kept the “Optane” fire. Although Optane is rare in consumer-grade products, it is still respected by some high-end platforms on enterprise-grade platforms. A few days ago, Intel’s fourth-generation Xeon scalable processor (Sapphire Rapids) and the third-generation Optane persistent memory (Crow Pass) appeared at the same time because of an accident. The biggest change in this generation of persistent memory is to upgrade to support DDR5. However, the preliminary performance test is slightly under-optimized. Compared with the first-generation product (Apache Pass), only sequential writing is superior. Considering that both the new Optane and the new Xeon are still in the stage of manufacturer verification, there should be room for improvement in the future. But this at least proves that Intel is indeed still studying Optane and continuing to develop it, and it has not stopped. Compared with ordinary memory (DRAM chip), the advantage of Optane persistent memory lies in non-volatile storage, that is, it continues to be stored after power failure. In addition, because it is based on phase change flash memory, .
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