The first major hardware update to Intel's consumer Optane M.2 drives is coming soon, with the Optane Memory M15 drive intended for caching use. Compared to the original Optane Memory and the Optane Memory M10, the M15 updates the controller to widen the PCIe link from two lanes to four lanes, enabling significant performance increases. The maximum throughput will still be lower than what high-end NAND flash based SSDs can achieve at high queue depths, but the Optane Memory M15 doesn't sacrifice any of its unbeatable latency at low queue depths in order to increase throughput compared to its predecessors.
Earlier leaks had indicated that the M15 (codenamed Carson Beach) would add a 128GB capacity, but so far Intel is only announcing the same three capacities offered by the Optane Memory M10: 16GB, 32GB and 64GB. The Optane M10's hardware is also sold as the Optane SSD 800P, and that product line does include a 128GB/118GB model. The upcoming Optane SSD 815P that will similarly share a hardware platform with the Optane Memory M15 is expected to continue offering both 58GB and 118GB usable capacities.
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