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Samsung MZ-V9S2T0B/AM

Samsung 990 EVO Plus 2TB PCIe 4.0 NVMe M.2 SSD, angled view on a white background

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990 EVO Plus 2TB bare drive (MZ-V9S2T0B/AM)

Capacity:
2TB
Interface:
PCIe 4.0 x4 / PCIe 5.0 x2, NVMe 2.0 (runs on either a Gen4 x4 or Gen5 x2 slot)
Form factor:
M.2 2280 (80.15 x 22.15 x 2.38 mm max)

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Package details

Model: MZ-V9S2T0B/AM

Condition:
Confirm new or reconditioned on the listing
Quantity:
Confirm package quantity on the listing

Important limit: No onboard DRAM cache; it relies on the host's memory buffer, which many NAS platforms do not support as well as a PC

How many units?

Confirm condition, quantity and included accessories on the retailer’s listing.

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Specifications checked November 5, 2026. Full product details

Samsung 990 EVO Plus 2TB PCIe 4.0 NVMe M.2 SSD (MZ-V9S2T0B/AM)

A 2TB Gen4 NVMe M.2 SSD with up to 7,250 MB/s sequential reads, suitable as a cache or pool drive in an all-flash NAS such as the ASUSTOR Flashstor.

Which version should you buy?

Selected package: 990 EVO Plus 2TB bare drive (MZ-V9S2T0B/AM).

Selected package

  • 2TB

    This page

    Model: MZ-V9S2T0B/AM

    Best for
    NAS cache or a main all-flash pool drive.

Related models and generations

These are different products. Check their specifications separately.

  • 1TB Model: MZ-V9S1T0B/AM

    Lower capacity; slightly slower on paper (7,150 MB/s read, 850K IOPS random read, 600 TBW).

    Boot drives and light caching.

  • 4TB Model: MZ-V9S4T0B/AM

    Double the capacity with the same 7,250 MB/s read rating, 2,400 TBW endurance.

    Larger all-flash NAS pools.

Purchase links appear where the exact offer is verified. Confirm the named model, quantity and accessories before ordering.

Watch out

  • 990 EVO Plus is not the 990 PRO or the plain 990 EVO: all three are current Samsung NVMe drives with different performance tiers.
  • There is no heatsink version of the 990 EVO Plus in the US; a heatsink sticker from a third party is not Samsung's part.
  • The /AM suffix marks the US retail version; MZ-V9S2T0 without it is the same drive sold through other channels.

Why people pick it

  • Top-tier Gen4 sequential speeds on paper (up to 7,250 MB/s read, 6,300 MB/s write)
  • Runs in either a PCIe 4.0 x4 or PCIe 5.0 x2 slot, so it fits current and older platforms
  • V-NAND TLC with 1,200 TBW endurance and a 5-year limited warranty for the 2TB model
  • HMB design draws less power than DRAM-buffered drives, which suits always-on NAS slots

Know before you buy

  • No onboard DRAM cache; it relies on the host's memory buffer, which many NAS platforms do not support as well as a PC
  • Not the fastest 990 model; Samsung positions the 990 PRO above it for sustained heavy workloads
  • On the maker's own shop page the 2TB shows out of stock, so availability varies by seller

Full specifications

Capacity2TB
InterfacePCIe 4.0 x4 / PCIe 5.0 x2, NVMe 2.0 (runs on either a Gen4 x4 or Gen5 x2 slot)
Form factorM.2 2280 (80.15 x 22.15 x 2.38 mm max)
Sequential read (maker spec)Up to 7,250 MB/s (2TB and 4TB; 7,150 MB/s for 1TB)
Sequential write (maker spec)Up to 6,300 MB/s
Random read (maker spec)Up to 1,000K IOPS
Random write (maker spec)Up to 1,350K IOPS
Controller / NAND / cacheSamsung in-house controller, Samsung V-NAND TLC, Host Memory Buffer (HMB) instead of onboard DRAM
Power (active average, maker spec)4.6W read, 4.2W write (2TB); 60mW idle with PS3 APST, 5mW PS4 L1.2
Endurance (TBW)1,200 TBW for the 2TB model
Warranty5 years limited, or the stated TBW, whichever comes first
Reliability1.5 million hours MTBF
Operating temperature0C to 70C (S.M.A.R.T. temperature; proper airflow recommended)
Capacities sold1TB, 2TB and 4TB, all in the same bare-drive M.2 2280 form factor; 2TB and 4TB have the top 7,250 MB/s read rating

From manufacturer documentation, checked November 5, 2026. Spotted an error? Tell us.

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