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Lexar EQ790 500GB specifications and in-depth review

Lexar EQ790 500GB

Manufacturer: Lexar

The Lexar EQ790 500GB is an M.2 form factor NVMe solid-state drive built around a PCIe Gen 4 interface, making it a capable option for systems that support the latest storage standards. It operates without an integrated heatsink and relies on HMB (Host Memory Buffer) caching, drawing on a portion of system RAM to assist with drive management tasks.

On the performance side, the EQ790 reaches sequential read speeds of 6400 MB/s and sequential write speeds of 2900 MB/s, with random read and write figures of 800,000 IOPS and 600,000 IOPS respectively. The drive uses TLC NAND storage, carries a 500 TBW endurance rating, an MTBF of 1.5 million hours, shock resistance rated at 1500G, and is backed by a five-year warranty. It complies with NVMe version 1.4 and has no RGB lighting.

Pros
  • Sequential read speed of 6400 MB/s enables fast data access in sustained workloads
  • PCIe Gen 4 interface with NVMe 1.4 support ensures compatibility with modern high-bandwidth platforms
  • 500 TBW endurance rating offers a solid lifespan for a 500GB drive
  • MTBF of 1.5 million hours reflects strong reliability specifications
  • Shock resistance rated at 1500G provides resilience against physical impacts
  • Five-year warranty offers extended coverage for long-term use
Cons
  • No integrated heatsink, which may lead to thermal throttling under sustained heavy loads
  • HMB caching relies on system RAM rather than dedicated onboard cache, which can affect consistency under certain workloads
  • Sequential write speed of 2900 MB/s is notably lower than the read speed, creating an imbalance in sustained write scenarios
Who is this for?

This drive is well-suited to users who need fast storage for demanding read-heavy workloads, such as loading large project files, game assets, or operating system tasks at speed. Its PCIe Gen 4 interface and NVMe 1.4 compliance make it a practical fit for modern desktop or laptop builds that support the latest storage standards. The 500 TBW endurance rating and 1.5 million hour MTBF also make it a reasonable choice for users who prioritize long-term reliability in everyday computing environments.

Who is this NOT for?

Users who regularly perform sustained large-scale write operations — such as video editors working with high-bitrate footage or professionals frequently moving massive datasets — may find the 2900 MB/s sequential write speed a limiting factor. The reliance on HMB caching rather than dedicated onboard cache can introduce inconsistency under workloads that push cache limits, making it less suitable for server or NAS environments. Additionally, systems that run under high thermal load without active cooling may be affected by the absence of an integrated heatsink during extended intensive use.

Read speed:

sequential read speed 6400 MB/s
random read speed 800000 IOPS

The Lexar EQ790 500GB delivers a sequential read speed of 6400 MB/s, allowing large files to be transferred quickly in sustained workloads. For tasks that involve accessing many small, scattered files simultaneously, the drive reaches a random read speed of 800,000 IOPS, reflecting solid throughput under mixed read-intensive conditions.

Write speed:

sequential write speed 2900 MB/s
random write speed 600000 IOPS

The Lexar EQ790 500GB supports a sequential write speed of 2900 MB/s, providing reliable throughput when writing large blocks of data in a continuous stream. On the random side, the drive handles 600,000 IOPS for write operations, making it capable of managing workloads that involve frequent, small writes spread across different locations on the drive.

Benchmarks:

General info:

type M2
SSD cache HMB (Host Memory Buffer)
Is an NVMe SSD ✓
NVMe version 1.4
internal storage 500GB
SSD storage type TLC
PCI Express (PCIe) version 4
Terabytes Written (TBW) 500
MTBF 1.5million hours
warranty period 5 years
Has an integrated heatsink ✕
shock resistance 1500G
has RGB lighting ✕

The Lexar EQ790 500GB is an M.2 form factor NVMe SSD running on PCIe Gen 4 and conforming to NVMe version 1.4, with 500GB of internal storage built on TLC NAND. It uses HMB (Host Memory Buffer) caching rather than dedicated onboard cache, and does not include an integrated heatsink or RGB lighting. Endurance is rated at 500 TBW alongside an MTBF of 1.5 million hours, and the drive can withstand shock loads of up to 1500G. A five-year warranty is included.

Final Verdict

The Lexar EQ790 500GB sits comfortably in the space of everyday high-speed storage, offering a 6400 MB/s sequential read speed over a PCIe Gen 4 interface that makes it genuinely capable for read-intensive tasks on modern systems. Its five-year warranty and solid endurance figures reinforce a sense of long-term dependability, even if the HMB-based caching and write performance place natural ceilings on what it can handle in more demanding write-heavy or thermally constrained scenarios. For users building or upgrading a mainstream system who want fast, reliable NVMe storage without the complexity of higher-tier solutions, the EQ790 500GB presents a well-rounded and purposeful option.