Crucial MX500 4000GB

The Crucial MX500 4TB represents the saturation point of the legacy SATA III interface, utilizing the Silicon Motion SM2259 controller paired with Micron’s 3D TLC NAND. It retains a dedicated DRAM cache and TLC flash, ensuring consistent random I/O performance and sustained write velocities. The architecture is designed to mitigate the inherent bottlenecks of the SATA protocol, prioritizing endurance and stability over the burst speeds associated with NVMe alternatives. The MX500 series has seen component revisions from 64-layer to 96-layer and eventually 176-layer Micron TLC NAND; the 4TB variant specifically benefits from newer, denser flash dies. Earlier firmware versions for high-capacity models were susceptible to write amplification anomalies, so verifying firmware revision M3CR046 or later is recommended. The drive features Integrated Power Loss Immunity via a capacitor array to protect data-at-rest during unexpected power cuts.

Key Specifications

• Interface: SATA III (6 Gb/s)
• Controller: Silicon Motion SM2259
• NAND Type: Micron 3D TLC (Layer count varies by batch)
• DRAM Cache: Yes (Micron LPDDR4)
• Sequential Read/Write: 560 MB/s / 510 MB/s
• Endurance (TBW): 1000 TBW
• Encryption: AES-256 Hardware Encryption, TCG Opal 2.0, IEEE-1667 compliant
• Special Feature: Power Loss Immunity (Data-at-rest protection)

Hardware Alternatives

• Samsung 870 EVO 4000GB: The most direct technical competitor, using a proprietary Samsung MKX controller and V-NAND; the 870 EVO and MX500 trade blows in 4K random read/write latency and share the SATA performance ceiling.
• Kingston KC600: A close hardware relative that also uses the Silicon Motion SM2259 controller; performance profiles are nearly identical, though the KC600 sources NAND from third parties rather than Micron’s vertical integration.
• SanDisk Ultra 3D 4000GB: Competes in the same tier using Western Digital/SanDisk proprietary controllers and BiCS Flash. While sequential speeds are similar, the MX500 is noted for superior consistency in heavy sustained write workloads compared to newer revisions of the Western Digital Blue SA510 4000GB.