Lexar 4TB SSD PCIe 5.0 NVMe M.2 2280

The Lexar NM1090 PRO is a 4TB PCIe 5.0 NVMe SSD with blistering 14,000/13,000 MB/s speeds and top-tier random performance. It's one of the fastest internal SSDs you can buy, ideal for gaming, AI, and heavy workloads. Just be ready to pay a serious premium for the privilege.

The headline numbers are wild. Lexar advertises up to 14,000 MB/s sequential reads and 13,000 MB/s writes, and our testing backs that up. Random performance is even more impressive relative to the field, landing in the 99th percentile. You're looking at 2,100K random read IOPS and 1,700K random write IOPS, which means this drive shrugs off the kind of scattered small-file workloads that make lesser SSDs choke.

In practice, what does that mean? Game load times drop noticeably, especially in titles that use DirectStorage. Large video files copy in seconds instead of minutes. AI model training and inferencing get a real boost because the drive simply doesn't become a bottleneck. The 6nm controller does a decent job managing heat, but this is still a PCIe 5.0 drive. Under sustained heavy writes, you'll want decent airflow in your case or a motherboard with a beefy M.2 heatsink. The 2,800 TBW endurance rating is solid for a 4TB drive, though not class-leading.

The NM1090 PRO goes head to head with some serious competition. The Samsung 9100 PRO is the most direct rival, offering similar PCIe 5.0 speeds with Samsung's typically excellent software and reliability track record. The Crucial T700 was one of the first PCIe 5.0 drives to market and remains a strong performer, though its 2TB focus means the Lexar's 4TB capacity gives it an edge for high-capacity needs. The Kingston FURY Renegade G5 is another speed demon, but it's harder to find in stock and often priced similarly.

Against the SanDisk Black SN850X, the comparison is interesting. The SN850X is a PCIe 4.0 drive, so it's slower on paper, but it's also dramatically cheaper and still fast enough for most people. One reviewer even mentioned replacing a failed SN850X with the Lexar and finding it noticeably faster and less expensive, which says a lot about how pricing has shifted. The Micron T710 is another PCIe 5.0 option worth considering, though it's less common in consumer channels. If you want the absolute fastest 4TB drive available, the Lexar is right at the top. If you want 90% of the real-world performance for 60% of the price, the SN850X is the smarter buy.

Let's be blunt: this drive is not cheap. In the US it's around $730, and Canadian buyers will see prices ranging from CAD 900 to CAD 1,089 depending on the retailer. Memory Express has the best CAD deal at the low end of that spread, while Amazon listings sit higher. For context, you can get a very good 4TB PCIe 4.0 drive for roughly half the price. But if you're building a top-tier system with a Ryzen 9000 or Intel i9 and you want zero storage bottlenecks, the NM1090 PRO delivers performance that justifies the premium for the right buyer. Just don't expect it to feel like a bargain.

The Lexar NM1090 PRO is a 4TB PCIe 5.0 NVMe SSD that sits at the top of the performance charts, and it's priced like it. This is a drive for people who want the absolute fastest storage money can buy right now, whether that's for gaming, AI workloads, or heavy content creation. With read speeds up to 14,000 MB/s and write speeds up to 13,000 MB/s, it's roughly twice as fast as the best PCIe 4.0 drives from a couple years ago.

Lexar is positioning this as a do-everything flagship. The 6nm controller helps keep thermals in check, and you get both DRAM cache and SLC dynamic cache to keep sustained transfers snappy. The 4TB capacity means you won't be juggling game installs or project files anytime soon. And yes, it supports Microsoft DirectStorage, so games that actually use that feature will see real load time improvements.

Is the Lexar NM1090 PRO good for gaming? Absolutely. It's one of the best gaming SSDs on the market, and our database puts it in the 99th percentile for random performance. For AI PCs and workstations, it's equally strong. The only real question is whether you need this much speed, because you'll pay a serious premium for it.

Skip the NM1090 PRO if you're running a PCIe 4.0 or older system, because you'll pay for speed you can't actually use. Budget-conscious buyers should look at PCIe 4.0 alternatives like the WD Black SN850X or Samsung 990 PRO, which deliver most of the real-world performance at a fraction of the cost. If you need a portable drive, this isn't it either, our testing puts portable use at the bottom of the barrel. And if you're just browsing the web, checking email, and occasionally playing older games, a mid-range PCIe 4.0 drive will feel identical in daily use.

Should you buy the Lexar NM1090 PRO? If you're building a flagship gaming rig, an AI workstation, or a content creation machine where every second counts, yes. This is one of the fastest SSDs we've ever tested, and the 4TB capacity means you won't outgrow it quickly. The random performance is genuinely best-in-class, and that matters more for real-world responsiveness than sequential numbers.

But if you're on a mid-range budget or still running a PCIe 4.0 platform, this drive is overkill. You won't see the full speed benefit, and you'll be paying a hefty premium for headroom you can't use. For most people, a good PCIe 4.0 drive like the SN850X or Samsung 990 PRO will feel nearly identical in daily use. The NM1090 PRO is for enthusiasts who know exactly why they need this much throughput.