Lexar NM1090 Pro 4TB specifications and in-depth review

Lexar NM1090 Pro 4TB

Manufacturer: Lexar

The Lexar NM1090 Pro 4TB is a high-capacity M.2 NVMe solid-state drive built around the PCIe 5.0 interface, positioning it among the faster storage options available for compatible platforms. With 14,000 MB/s sequential read speeds, it targets workloads that demand rapid data throughput, whether for large file transfers, content creation pipelines, or demanding system tasks. The drive ships without an integrated heatsink or RGB lighting, keeping its profile straightforward and focused on storage performance.

Under the hood, the NM1090 Pro relies on a Silicon Motion SM2508 controller paired with an 8-channel configuration and DRAM cache, working alongside TLC NAND flash storage. Sequential write performance reaches 13,000 MB/s, while random read and write figures land at 2,100,000 IOPS and 1,700,000 IOPS respectively. The drive carries a PassMark score of 74,678, a TBW rating of 2,800 terabytes, an MTBF of 1.5 million hours, and comes backed by a five-year warranty.

Pros
  • Sequential read and write speeds of 14,000 MB/s and 13,000 MB/s respectively make it well-suited for sustained large-file transfers
  • Random read performance of 2,100,000 IOPS and random write of 1,700,000 IOPS support responsive handling of scattered, non-sequential workloads
  • A TBW rating of 2,800 terabytes indicates substantial long-term write endurance for a drive of this capacity
  • The DRAM cache helps maintain consistent performance during intensive data operations
  • A five-year warranty and an MTBF of 1.5 million hours reflect a solid reliability commitment
  • The 8-channel Silicon Motion SM2508 controller paired with PCIe 5.0 and NVMe 2.0 enables the drive to fully utilize modern high-bandwidth platforms
Cons
  • No integrated heatsink is included, which may require users on thermally constrained systems to source one separately
  • TLC NAND, while offering high capacity, can experience write speed fluctuations once the cache buffer is saturated under prolonged heavy writes
  • The PCIe 5.0 interface requires a compatible motherboard slot to reach rated speeds, limiting the drive's full potential on older platforms
Who is this for?

This drive is well-matched to users who need both high capacity and fast throughput in a single M.2 slot, such as those working with large video files, 3D rendering projects, or data-intensive creative workflows that place sustained demands on storage. System builders running PCIe 5.0-compatible platforms will be able to take full advantage of the rated speeds, and the 2,800 TBW endurance rating makes it a reasonable fit for workstation environments where the drive sees frequent, heavy write activity over several years. The five-year warranty and high MTBF figure also suit users who prioritize long-term reliability in professional or semi-professional setups.

Who is this NOT for?

Users on older motherboards lacking a PCIe 5.0 M.2 slot will not be able to reach the drive's rated speeds, making much of its performance headroom effectively inaccessible. Systems with poor airflow or no provision for M.2 thermal management may also struggle, since the drive ships without an integrated heatsink and high-speed PCIe 5.0 drives can generate meaningful heat under sustained load. Additionally, casual everyday users whose workloads consist mainly of light browsing, document editing, or media consumption are unlikely to benefit from the drive's bandwidth capabilities, as those tasks rarely stress even mid-range storage.

Read speed:

sequential read speed 14000 MB/s
random read speed 2100000 IOPS

The Lexar NM1090 Pro 4TB delivers a sequential read speed of 14,000 MB/s, making it well-suited for tasks involving large, sustained data reads. On the random side, it reaches 2,100,000 IOPS, reflecting strong performance when handling the kind of fragmented, non-sequential access patterns typical of operating system operations and application loading.

Write speed:

sequential write speed 13000 MB/s
random write speed 1700000 IOPS

On the write side, the Lexar NM1090 Pro 4TB is rated for a sequential write speed of 13,000 MB/s, supporting fast sustained writes across large files and bulk data operations. Its random write performance reaches 1,700,000 IOPS, indicating solid responsiveness when dealing with the smaller, scattered write operations common in multitasking environments and database-style workloads.

Benchmarks:

PassMark result 74678

In the PassMark SSD benchmark, the Lexar NM1090 Pro 4TB achieves a score of 74,678, providing a standardized reference point for evaluating its overall storage performance across the read, write, and seek operations that the test covers.

General info:

type M2
SSD cache DRAM cache
Is an NVMe SSD
NVMe version 2
internal storage 4000GB
controller Silicon Motion SM2508
SSD storage type TLC
PCI Express (PCIe) version 5
Controller channels 8
Terabytes Written (TBW) 2800
MTBF 1.5million hours
warranty period 5 years
Has an integrated heatsink
has RGB lighting

The Lexar NM1090 Pro 4TB is an M.2 NVMe SSD operating over a PCIe 5.0 interface with NVMe version 2 support, offering 4,000GB of internal storage built on TLC NAND flash. It uses a Silicon Motion SM2508 controller with 8 channels and a DRAM cache to manage data flow efficiently. Endurance is rated at 2,800 TBW with an MTBF of 1.5 million hours, and the drive is backed by a five-year warranty. It does not include an integrated heatsink or RGB lighting, keeping the physical design minimal.

Final Verdict

The Lexar NM1090 Pro 4TB is a high-capacity M.2 NVMe drive built around a clear purpose: delivering top-tier throughput for users on platforms that can support it. Its PCIe 5.0 interface paired with sequential read speeds of 14,000 MB/s and a 2,800 TBW endurance rating make it a credible choice for demanding workstation and creative workloads where both speed and longevity matter. The absence of an integrated heatsink and its strict dependency on a PCIe 5.0-compatible slot do narrow its ideal deployment scenarios, but within those parameters, the NM1090 Pro presents a well-rounded specification sheet backed by a five-year warranty and strong random I/O figures. Users who can meet its platform requirements and have the thermal management in place will find it a capable and durable storage solution.

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