News Silicon Motion gives a glimpse of its PCIe 6.0 controller for client SSDs — 25+ GB/s sequential reads, 3.5 million random IOPS, coming 2028-2029

[Admin]

Silicon Motion previews its next-gen Neptune SSD controller for client PCs, featuring a PCIe 6.0 x4 interface and over 25 GB/s read speeds, but mass production is only set for 2028.

Silicon Motion gives a glimpse of its PCIe 6.0 controller for client SSDs — 25+ GB/s sequential reads, 3.5 million random IOPS, coming 2028-2029 : Read more

 

[bit_user]

the Neptune controller features Separate Command Architecture (SCA), which divides the command and address transmission paths within the NAND interface, allowing the controller to handle commands and addresses simultaneously instead of sequentially to reduce real-world latency and boost available bandwidth.

This is the opposite of what LPDDR5 does, where you do see a real latency impact from alternating address & data over the same wires. The tradeoff is that you need more wires and I suppose more power to transmit them concurrently.

even Neptune-based drives will offer slightly lower sequential read performance than what SMI expects from enterprise-grade SM8466-based PCIe 6.0 SSDs, and two times lower random performance compared to SM8466-powered drives as the latter features 16 NAND channels and various performance optimizations to offer sustained high performance.

Any word on CXL support?