Crucial P3 Plus 2000GB

SSD Description

The Crucial P3 Plus 2000GB utilizes the Phison PS5021-E21T controller, a 12nm, DRAM-less architecture designed to bridge the gap between entry-level and mid-range PCIe 4.0 performance. This four-channel controller is paired with Micron’s 176-layer QLC NAND, high-density flash memory that prioritizes capacity and read throughput over write endurance. To compensate for the lack of onboard DRAM, the drive employs Host Memory Buffer (HMB) technology, allowing the controller to utilize a small portion of system RAM to manage logical-to-physical mapping tables. The drive relies heavily on a dynamic pseudo-SLC (pSLC) cache to maintain write speeds; once the cache is saturated—typically during sustained transfers exceeding 25% of the drive’s free capacity—write performance degrades sharply to native QLC speeds, which can fall below 100 MB/s. Consequently it is categorized as a read-intensive solution, suited to game libraries or media consumption where data is written once and read frequently, rather than write-heavy workstation tasks. The drive uses a single-sided M.2 2280 PCB, making it mechanically compatible with slim notebooks where vertical clearance is limited.

Key Specifications

• Interface: PCIe 4.0 x4 (NVMe 1.4)
• Sequential Read/Write: 5000 MB/s / 4200 MB/s
• Controller: Phison PS5021-E21T (4-Channel, ARM Cortex-R5)
• NAND Type: Micron 176-Layer 3D QLC
• DRAM Cache: None (HMB Support)
• Endurance (TBW): 440 TBW
• Physical Layout: Single-sided M.2 2280

Hardware Alternatives

• Solidigm P41 Plus: functions as the most direct technical equivalent, utilizing QLC NAND with a Silicon Motion SM2269XT controller and showing a similar performance curve regarding pSLC cache saturation.
• Western Digital WD_BLACK SN770 2000GB: a primary competitor in the DRAM-less Gen4 category that uses TLC NAND and a proprietary SanDisk controller, offering higher endurance and sustained write speeds than the QLC-based P3 Plus.
• Crucial P3 2000GB: shares an identical hardware architecture (Phison E21T + Micron QLC) but is firmware-restricted to PCIe 3.0 speeds, illustrating that the P3 Plus is essentially an unlocked version of its predecessor.
• Kingston NV2 2000GB: a variable hardware model that frequently utilizes the same Phison E21T controller, though NAND pairing fluctuates between TLC and QLC depending on the manufacturing batch.