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While an SSD is a device used for persistent data storage in memory, the Intel® Optane™ Memory is a system acceleration solution designed to work between the processor and SATA-based storage devices. This allows the system to access the data on the storage device more quickly, which can improve overall system responsiveness.
I hope this clarifies your concern. You can find additional information about the Intel® Optane™ Memory in the following site: Frequently Asked Questions for Intel® Optane™ Memory
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