This article covers OEM Samsung PM9A1 256GB M.2 PCIe NVME ソリッドステートドライブ SSD OEM 80mm 2280 MZVL2256HCHQ Gen 4 Mキー。.

Overview

The Samsung PM9A1 256GB (model MZVL2256HCHQ) is the OEM equivalent of the consumer flagship 980 PRO SSD. It features a PCIe 4.0 x4 interface, M.2 2280 form factor, and NVMe 1.3 support. While the 256GB capacity is modest, sequential read speeds reach approximately 3,500MB/s, making it more than adequate for an OS drive or game launcher. This drive uses Samsung's in-house Elpis controller and 128-layer TLC NAND flash. The 1TB variant includes 1GB of DRAM cache, though the 256GB model may have a different DRAM configuration. As an OEM product, it ships as a bare drive without heatsinks, software, or retail packaging. Positioned in the entry-to-mid-range Gen 4 SSD segment, the PM9A1 offers a cost-effective way to experience PCIe 4.0 speeds. It is particularly suitable for budget-conscious builders, secondary machines, or laptop storage upgrades.

Compatibility Guide

Interface: M.2 2280 (M-key), PCIe 4.0 x4 / NVMe 1.3 Supported sockets: Any motherboard with an M.2 slot (Intel 500-series / AMD 500-series or newer recommended for Gen 4) Memory type: N/A (storage device) Form factor: M.2 2280 (22mm x 80mm x 2.38mm) Power: Powered via PCIe slot (3.3V / ~2.5A) Storage interface: NVMe (PCIe 4.0 x4) Real-world pairing examples include Intel Z690/B660 or AMD B550/X570 motherboards. On older Intel 300-series boards, it will operate at PCIe 3.0 speeds, limiting sequential throughput. For laptop use, verify the M.2 slot key (M-key) and length (2280) before purchase.

Product Info

Release: September 2020 (OEM availability) Price: Approximately ¥16,258 on (as of June 2026) Warranty: 2 years from seller (OemGenuine) Availability: OEM bulk units sold through and other retailers Key specs: Sequential read ~3,500MB/s, sequential write ~2,500MB/s (rated) Market position: Entry-to-mid-range Gen 4 SSD. Offers a lower price point than the retail 980 PRO while maintaining similar core architecture, making it a value-oriented choice.

Best Use Cases

OS drive: 256GB is sufficient for Windows and essential applications. Fast boot times and snappy app loading make it ideal for daily drivers on a budget. Laptop storage upgrade: Low power consumption and slim M.2 2280 form factor fit most modern laptops with an available M.2 slot. Great for adding NVMe speed to a secondary drive bay. * Secondary or cache drive: For users who need a fast scratch disk or cache drive without breaking the bank, the PM9A1 delivers Gen 4 performance at a fraction of the cost of larger retail SSDs.

Things to Consider

OEM nature: No heatsink, software (Samsung Magician), or accessories included. Warranty is provided by the seller (OemGenuine) for 2 years, not Samsung directly. Firmware updates are possible via Samsung's tools but require manual effort. Capacity limitations: 256GB fills quickly with modern games and large creative projects. Consider the 512GB or 1TB variant if you need more space. For a pure OS drive, 256GB is adequate. PCIe 3.0 penalty: On PCIe 3.0 systems, sequential speeds will be capped at around 3,500MB/s (the Gen 3 x4 limit), though random performance remains strong. To fully utilize Gen 4, a compatible motherboard is required. Competitor comparison: Alternatives include the Crucial P3 Plus (Gen 4, QLC, no DRAM) and Western Digital SN570 (Gen 3, TLC, no DRAM). The PM9A1's TLC NAND offers better write endurance than QLC drives, but its 256GB capacity may feel cramped compared to similarly priced 500GB Gen 3 options.

Product Disclosure (Amazon)

  • Manufacturer: Oemgenuine
  • Seller: ブルーアステール
  • Fulfilled by: ブルーアステール
  • ASIN: B09XBS1KK6
  • Note: This article covers a manufacturer-made product based on Amazon listing details.