Lexar
Lexar 4TB NM790 Internal NVMe SSD, 7400/6500 MB/s, M.2 2280, PCIe Gen 4x4
Bottom line: The Lexar 4TB NM790 Internal NVMe SSD ($569.99 on Amazon as of 2026-10-06): 7400/6500 MB/s sequential read/write on PCIe Gen4 x4; main trade-off: DRAM-less HMB trails true-DRAM drives on sustained writes.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 7400/6500 MB/s sequential read/write on PCIe Gen4 x4
- ✓ High 3000 TBW endurance backed by 5-year warranty
- ✓ Single-sided M.2 2280 fits laptops and PS5 expansion slot
- ✓ HMB 3.0 DRAM-less design draws up to 40% less power
Cons
- ✗ DRAM-less HMB trails true-DRAM drives on sustained writes
- ✗ No bundled heatsink for PS5 or hot motherboards
- ✗ Gen4 ceiling falls short of newer Gen5 NVMe drives
- ✗ HMB benefit depends on host support; older rigs gain less
Manufacturer description
Whether you’re looking to rampage in your favorite game or create massive, high-res files, the Lexar NM790 M.2 2280 PCIe Gen 4x4 NVMe SSD helps you get it done. It delivers incredible speeds of 7400MB/s read, 6500MB/s write thanks to its PCIe Gen4 tech, which includes HMB 3.0 and Dynamic SLC Cache. It’s compatible with desktop computers, laptops, and PlayStation5, so whatever your pursuits, it’s game.
SpecPicks Verdict
SpecPicks scored Lexar 4TB NM790 Internal NVMe SSD using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. Lexar's ssds & storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for ssds & storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- [4TB] Exceptional performance up to 7400MB/s read, 6500MB/s write; 3000TBW
- 2x faster than PCIe Gen 3 SSDs
- Up to 40% less power consumption than DRAM cache-enabled PCIe Gen 4 SSDs
- Host Memory Buffer (HMB) 3.0 activates the DRAM cache function of your device for a smoother transfer speed and seamless performance
- Designed for hardcore gamers, professionals, and creators
Full Specifications
| Brand | Lexar |
|---|---|
| Color | Black |
| Model Name | NM790 |
| Read Speed | 7400 megabytes_per_second |
| Form Factor | M2 |
| Media Speed | 6500 megabits_per_second |
| Model Number | LNM790X004T-RNNNU |
| Built-In Media | SSD |
| Hard-Drive Size | 4000 GB |
| Mfr Part Number | LNM790X004T-RNNNU |
| Number of Items | 1 |
| Special Feature | Single-sided design |
| Installation Type | Internal Hard Drive |
| Compatible Devices | Desktop, Laptop, PS5 |
| Data Transfer Rate | 7400 megabytes_per_second |
| Enclosure Material | Nand |
| Additional Features | Single-sided design |
| Hard Disk Interface | NVMe |
| Warranty Description | Five-year limited warranty |
| Hard Disk Description | Solid State Drive |
Ready to buy?
Lexar 4TB NM790 Internal NVMe SSD, 7400/6500 MB/s, M.2 2280, PCIe Gen 4x4 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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