The Micron 4600 is a solid-state drive in the M.2 2280 form factor, launched on February 18th, 2025. It is available in capacities ranging from 512 GB to 4 TB. This page reports specifications for the 4 TB variant. With the rest of the system, the Micron 4600 interfaces using a PCI-Express 5.0 x4 connection. The SSD controller is the SM2508 from Silicon Motion, a DRAM cache chip is available. Micron has installed 276-layer TLC NAND flash on the 4600, the flash chips are made by Micron. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are processed more quickly. Thanks to support for the fast PCI-Express 5.0 interface, performance is excellent. The 4600 is rated for sequential read speeds of up to 14,500 MB/s and 12,000 MB/s write; random IOPS reach up to 2100K for reads and 2100K for writes.
The SSD's price at launch is unknown. The warranty length is set to three years, which is above average, but shorter than the five years offered by many other vendors. Micron guarantees an endurance rating of 1600 TBW, a typical value for consumer SSDs.