Lexar NM790 4TB M.2 SSD review @ Guru 3D
Guru3D reviewed the Lexar NM790 4TB PCIe Gen4x4 M.2 NVMe SSD recently and found it to be a strong performer at an affordable price point. Powered by the Maxio MAP1602A controller and YMTC 232-layer TLC NAND, the DRAM-less drive delivers impressive sequential read and write speeds of up to 7,400 MB/s and 6,500 MB/s, respectively. Despite the absence of a DRAM cache, its real-world performance in daily tasks and gaming loads remains solid. The SSD is also compatible with a wide range of devices, including desktops, laptops, and even PlayStation 5 systems, thanks to its single-sided M.2 2280 design.
The Lexar NM790 offers a different take on the 4TB SSD design. Also priced near €225 (about $250 USD), this model skips the Micron memory and Phison controller in favor of a Maxio controller and TLC memory from Longsys, presented in a 232-layer format. This setup is engineered to provide better endurance and higher write performance, which might be critical for gurus seeking a more robust solution. The NM790 does not include a DRAM cache, meaning that its performance benchmarks reflect the SSD’s core capabilities without additional buffering. This approach offers a transparent view of the drive’s intrinsic performance under various conditions.
Thermal performance is efficient, averaging around 39°C and peaking at about 60°C under sustained load—manageable with a motherboard heatsink. The NM790 also proves to be power-efficient, drawing as little as 0.04W at idle and about 4W during heavy operation. With an endurance rating of 3,000 TBW and a 5-year warranty, it offers a solid balance of capacity, speed, and value. Guru3D concludes that the Lexar NM790 is an excellent choice for users looking to expand high-speed storage without overspending.
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