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Lexar NM990 4TB specifications and in-depth review

Lexar NM990 4TB

Manufacturer: Lexar

The Lexar NM990 4TB is a high-performance NVMe SSD offering a robust 4000GB of internal storage. With a sequential read speed of 14000 MB/s, it is designed for users needing fast and reliable data access.

Key technical specifications include PCIe 5.0 compatibility, 8 controller channels, and a TBW of 3000, ensuring durability. This SSD also features a DRAM cache, but lacks an integrated heatsink and RGB lighting, making it a straightforward, efficient solution for demanding applications.

Pros
  • Offers high sequential read speed of 14000 MB/s for fast data transfers.
  • Has a DRAM cache for improved performance in demanding tasks.
  • Supports PCIe 5.0, providing compatibility with the latest high-speed systems.
  • Includes a robust shock resistance rating of 1500G for durability in tough environments.
  • Provides 4000GB of internal storage, offering ample space for large data sets.
Cons
  • Lacks an integrated heatsink, potentially limiting thermal management under heavy use.
  • Does not feature RGB lighting, which might be a drawback for users seeking aesthetic customization.
  • Maximum operating temperature of 70°C may be restrictive in high-performance scenarios.
Who is this for?

The Lexar NM990 4TB is ideal for users requiring fast, high-capacity storage in performance-heavy environments. With a sequential read speed of 14000 MB/s and PCIe 5.0 compatibility, it excels in tasks such as video editing, 3D rendering, and large database management. Its 4000GB of internal storage also makes it a great choice for professionals dealing with extensive data sets or running demanding applications that require quick access to large files.

Who is this NOT for?

This SSD may not be ideal for users seeking advanced cooling features, as it lacks an integrated heatsink, which could lead to thermal throttling in extreme use cases. Additionally, those looking for customizable aesthetics might be disappointed by the absence of RGB lighting. Users in environments with higher temperature tolerance requirements may also find the maximum operating temperature of 70°C limiting for sustained high-performance operations.

Read speed:

sequential read speed 14000 MB/s
random read speed 2000000 IOPS

The Lexar NM990 4TB offers impressive read speeds, with a sequential read speed of 14000 MB/s for fast data transfers. Additionally, it delivers a strong random read speed of 2000000 IOPS, ensuring high efficiency for varied workloads.

Write speed:

sequential write speed 11000 MB/s
random write speed 1500000 IOPS

The Lexar NM990 4TB provides solid write performance with a sequential write speed of 11000 MB/s, ensuring quick data writing. It also supports a random write speed of 1500000 IOPS, making it well-suited for diverse workloads that require consistent write operations.

Benchmarks:

General info:

type M2
SSD cache DRAM cache
Is an NVMe SSD ✓
internal storage 4000GB
release date June 2025
PCI Express (PCIe) version 5
Controller channels 8
Terabytes Written (TBW) 3000
MTBF 1.5million hours
warranty period 5 years
Has an integrated heatsink ✕
maximum operating temperature 70 °C
shock resistance 1500G
has RGB lighting ✕

The Lexar NM990 4TB is an NVMe SSD with 4000GB of internal storage and is compatible with PCIe 5.0 for fast data transfer. It features a DRAM cache for efficient performance, operates with 8 controller channels, and supports a TBW of 3000 for durability. This SSD also offers a 5-year warranty and can withstand a maximum operating temperature of 70°C, with shock resistance of 1500G.

Final Verdict

The Lexar NM990 4TB is a high-performance NVMe SSD designed for users needing fast and reliable storage. With a sequential read speed of 14000 MB/s and 4000GB of internal storage, it excels in data-intensive tasks like content creation and large-scale computing. While it may lack an integrated heatsink and customizable RGB lighting, its robust specifications and durability make it a strong choice for professionals seeking efficiency and speed. Overall, the Lexar NM990 4TB delivers impressive performance for demanding applications, making it a solid option in the high-capacity SSD market.

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