Corsair MP600 GS 1000GB

The Corsair MP600 GS is a mid-range PCIe 4.0 NVMe solution designed around a DRAM-less architecture to prioritize power efficiency and thermal management. The drive utilizes the Phison PS5021-E21T controller, a quad-channel processor built on a 12nm process, paired typically with 176-layer 3D TLC NAND. Lacking a dedicated onboard DRAM cache, the MP600 GS employs Host Memory Buffer (HMB) technology, which borrows a small fraction of system RAM to manage logical-to-physical mapping tables. This configuration allows the drive to saturate a significant portion of the PCIe 4.0 x4 bandwidth while maintaining a lower power envelope than flagship eight-channel controllers. Technical analysis confirms that the Phison E21T controller runs significantly cooler than the high-performance Phison E18 found in the MP600 Pro series, making the GS model viable for laptops without heavy thermal shielding. The 1000GB variant utilizes a single-sided PCB design, ensuring physical compatibility with ultra-thin notebooks and compact SFF builds where double-sided drives may experience clearance issues.

Key Specifications

• Interface: PCIe Gen4 x4 / NVMe 1.4
• Controller: Phison PS5021-E21T (4-channel)
• NAND Flash: 3D TLC (Typically Micron 176-Layer)
• Sequential Performance: 4,800 MB/s Read / 3,900 MB/s Write
• Cache: DRAM-less (Host Memory Buffer support)
• Endurance: 600 TBW
• Encryption: AES 256-bit Encryption support
• Physical: Single-sided M.2 2280

Hardware Alternatives

• Silicon Power UD90 1000GB: These drives serve as direct hardware relatives, sharing the same Phison E21T controller and TLC NAND configuration, offering nearly identical theoretical performance profiles.
• TeamGroup MP44L: Serves as a direct hardware relative sharing the same Phison E21T controller and TLC NAND configuration, offering nearly identical theoretical performance profiles.
• Western Digital WD_BLACK SN770 1000GB: A direct performance competitor in the DRAM-less segment; it uses a proprietary SanDisk controller and BiCS5 NAND, generally offering slightly higher random I/O performance than the Phison-based MP600 GS.
• Crucial P3 Plus 1000GB: Shares the Phison E21T controller but uses QLC NAND rather than TLC, resulting in lower endurance ratings and reduced sustained write performance compared to the MP600 GS.