Kingston NV2 4000GB

SSD Description

The Kingston NV2 4TB is a PCIe 4.0 NVMe drive that replaces the NV1 series by moving to the newer interface. It uses a DRAM-less design with Host Memory Buffer (HMB) to use system RAM for address mapping. The 4TB capacity typically pairs a quad-channel controller (commonly Phison PS5021-E21T or SM2267XT) with high-density QLC NAND in an M.2 2280 single-sided PCB. The NV2 is noted for a variable bill of materials strategy: Kingston guarantees the advertised performance metrics (3,500/2,800 MB/s) rather than specific internal components, so controllers and NAND manufacturers may differ between production batches. For the 4TB variant, QLC NAND yields lower endurance and a drop in write speeds once the pseudo-SLC cache is saturated. Thermally, the drive runs relatively cool due to modest power requirements of its mid-range controllers, improving suitability for laptops with limited airflow when workloads do not involve sustained heavy writes.

Key Specifications

• Interface: PCIe Gen 4.0 x4 (NVMe 1.4)
• Controller: Variable (Commonly Phison PS5021-E21T or SM2267XT)
• NAND Flash: Variable (Typically 144-layer or 176-layer QLC for 4TB models)
• Sequential Read/Write: 3,500 MB/s Read / 2,800 MB/s Write
• DRAM Cache: None (HMB Support)
• Endurance: 1,280 TBW
• Physical Layout: Single-sided PCB (improves physical compatibility in thin devices)

Hardware Alternatives

• Crucial P3 Plus 4000GB: This drive serves as the most direct architectural equivalent, also utilizing a Phison controller paired with QLC NAND. Both drives target the entry-level PCIe 4.0 segment where capacity takes precedence over sustained write performance, sharing very similar endurance ratings and cache recovery behaviors.
• Western Digital WD Blue SN580 4000GB: While also a DRAM-less PCIe 4.0 drive utilizing HMB, the SN580 typically employs TLC NAND (BiCS5). Consequently, while peak sequential speeds are comparable to the NV2, the SN580 generally offers higher sustained write speeds and greater endurance per terabyte.
• Solidigm P41 Plus: A close competitor in the QLC segment, the P41 Plus utilizes the Silicon Motion SM2269XT controller. It offers a similar performance profile but differentiates itself with a specialized driver stack aimed at optimizing read/write caching for mixed workloads, presenting a software-assisted alternative to Kingston's hardware-agnostic approach.