Lexar NM790 4TB with heatsink

In this lexar nm790 4tb with heatsink review, the Lexar NM790 4TB is the best budget pick in our guide of eight 4TB NVMe SSDs, and it costs $589.99. It ranks seventh overall, which makes it the cheapest serious option here for PS5 storage and everyday desktop builds. The headline numbers are strong: 7,400 MB/s sequential reads, 6,500 MB/s writes, 3,000TBW endurance, and a five-year limited warranty. On top of that, 1,316 Amazon ratings average 4.8 stars, tying the highest score on this list. Buyers who want a fast, capacious Gen4 drive without paying flagship prices are exactly who this drive is built for.

The included heatsink is the feature that matters most day to day, because it lets the drive drop into a PS5 expansion bay or a desktop M.2 slot without buying extra cooling. Meanwhile, the M.2 2280 form factor fits desktops, laptops and the PlayStation 5, and the whole drive weighs just 1.76 ounces. Lexar rates the power draw up to 40% lower than DRAM cache Gen4 drives, which means less heat and better efficiency in tight builds, and it says the drive runs about twice as fast as PCIe Gen 3 models. Host Memory Buffer 3.0 borrows a slice of system memory to keep transfers smooth. In practice, game installs, large file moves and everyday workloads feel quick, though sustained pro-level writing is where the lack of on-board DRAM shows.

At $589.99, the Lexar NM790 4TB undercuts most DRAM-equipped 4TB Gen4 drives in this guide, and that price gap is the whole point of the budget label. By contrast, Samsung and WD models carry longer track records, so their higher cost buys more long-term proof. Even so, this drive matches them on capacity, endurance and rated speed. The real caveat is that it relies on Host Memory Buffer instead of its own DRAM cache, and 1,316 ratings are fewer than the big brands have collected. As a result, skip it if you write hundreds of gigabytes a day for professional work. For PS5 expansion and everyday gaming, if you want 4TB of Gen4 speed for less, this is the one to get.