Lexar NM1090 PRO
The PCIe 5.0 x4 interface delivers 13,000 MB/s read and write speeds, with a 6nm controller managing heat to sustain performance during heavy workloads. Its DRAM and SLC dynamic caches reduce latency, while Microsoft DirectStorage support cuts game load times and frees up CPU resources. This 4TB drive suits AI developers training models, gamers on Ryzen or i9 systems, and content creators needing fast rendering, though it is not meant for portable use.
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Snapshot
The 30-Second Version
The Lexar NM1090 PRO is a 4TB PCIe 5.0 NVMe SSD with blistering 13,000 MB/s read and write speeds. It's one of the fastest drives we've tested, ideal for AI workloads and heavy content creation. But it's expensive, runs hot, and has mediocre endurance, so most gamers and everyday users are better off with a cheaper Gen 4 drive.
Pros & Cons
Pros
- Blazing 13,000 MB/s read and write speeds 98th
- Massive 4TB capacity 98th
- DRAM cache and SLC dynamic cache keep things snappy 93rd
- DirectStorage support for faster game loads 91st
- 6nm controller helps manage heat
Cons
- Endurance rating is a weak spot at 14th percentile
- Expensive at around $730 USD
- Runs hot under sustained load
- Portable use is basically a non-starter
- Overkill for most everyday tasks
What owners think
The Word on the Street
The proof
Performance
The headline numbers are wild. 13,000 MB/s sequential read and write puts this drive in the 97th percentile for speed in our database. That's roughly double what a good Gen 4 drive like the Samsung 990 PRO manages. In practice, that means a 100GB game install transfers in seconds, not minutes. The 6nm controller helps keep thermals in check, which is a real concern with Gen 5 drives that can thermal throttle under sustained load.
Random performance is solid but not chart-topping, landing in the 79th percentile. That's still well above average and fine for everyday use, but if your workload is heavily random I/O dependent, there are drives that edge it out. The DRAM cache and SLC dynamic cache help smooth things out, and DirectStorage support means games can load assets directly from the drive without hammering the CPU. For gaming, this drive scored 83.7 out of 100 in our testing, which is strong. Console use is even better at 85.3, though you'd need a PS5-compatible enclosure to actually use it there.
Specifications
Full Specifications
Drive
| Capacity | 4000 |
| Form Factor | M.2 2280 |
| Interface | PCIe 5.0 x4 |
| Protocol | NVMe |
| PCIe Generation | 5 |
| External | No |
Performance
| Sequential Read (MB/s) | 14000 |
| Sequential Write (MB/s) | 13000 |
| Random Read (IOPS) | 2100000 |
| Random Write (IOPS) | 1800000 |
Hardware
| NAND | TLC |
| DRAM Cache | Yes |
Reliability
| Endurance (TBW) | 2800 |
| MTBF (hours) | 1500000 |
Features
| Heatsink | No |
vs Competition
The Samsung 990 PRO is the most obvious alternative. It's a Gen 4 drive, so it tops out around 7,450 MB/s read and 6,900 MB/s write, roughly half what the Lexar manages. But it's cheaper, has better endurance, and runs cooler. The Western Digital Black SN850X is another strong Gen 4 option with similar trade-offs. If you want to stay in the Gen 5 lane, the Micron T710 is worth a look, though it's harder to find at retail. The Seagate FireCuda 530R and Kingston Fury Renegade are both solid Gen 4 drives that cost less and still deliver great real-world performance for gaming and general use.
For most people, a good Gen 4 drive is the smarter buy. The NM1090 PRO only makes sense if you have a workload that can actually saturate a Gen 5 interface. AI training, large dataset processing, and high-bitrate video editing are the main use cases where you'll feel the difference.
| Spec | Lexar NM1090 PRO | Samsung 990 PRO | SanDisk Optimus GX PRO 850X | fanxiang S910 Pro-2TB | Crucial T705 CT1000T705SSD5 | Solidigm D7-P5520 SSDPF2KX038T11Z |
|---|---|---|---|---|---|---|
| Capacity | 4TB | 2TB | 1TB | 2TB | 1TB | 3.84TB |
| Form Factor | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 | M.2 2280 | U.2 |
| Interface | PCIe 5.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 5.0 x4 | PCIe 5.0 | PCIe 4.0 x4 |
| Seq Read | 14,000 MB/s | 7,450 MB/s | 7,300 MB/s | 14,000 MB/s | 13,600 MB/s | 7,100 MB/s |
| Nand Type | TLC | TLC | TLC | TLC | TLC | TLC |
| Dram Cache | true | true | false | true | false | - |
| Endurance | 2800 TBW | 1200 TBW | 4800 TBW | 1400 TBW | 600 TBW | 7168 TBW |
| Compare | Compare | Compare | Compare | Compare |
| Product | Speed | Random | Feature | Capacity | Endurance | Social Proof |
|---|---|---|---|---|---|---|
| Lexar NM1090 PRO | 97.8 | 98.1 | 90.6 | 92.8 | 74.5 | 28.1 |
| Samsung 990 PRO Compare | 93.2 | 96.9 | 99 | 78.4 | 86 | 95.6 |
| SanDisk Optimus GX PRO 850X Compare | 88 | 95.7 | 78.5 | 54.6 | 99.2 | 35.2 |
| fanxiang S910 Pro-2TB Compare | 96.7 | 79.9 | 97.4 | 78.4 | 89.5 | 41.4 |
| Crucial T705 CT1000T705SSD5 Compare | 96.5 | 97.4 | 89 | 54.6 | 77.8 | 0 |
| Solidigm D7-P5520 SSDPF2KX038T11Z Compare | 77.1 | 60.6 | 78.5 | 88.3 | 97.6 | 0 |
Price
Value & Pricing
At $730 USD, the NM1090 PRO is priced like a flagship, because it is one. You're paying a premium for Gen 5 speeds and 4TB of capacity. If you don't need the absolute fastest drive, the Western Digital Black SN850X or Samsung 990 PRO offer excellent Gen 4 performance for noticeably less money. But if you're building a workstation for AI model training or 8K video editing, the time saved on file transfers and project loads can justify the cost. Just know that endurance is not this drive's strong suit, so heavy write workloads might wear it out faster than some competitors.
We started tracking prices for this product on Nov 8, 2026. The chart appears once we have more data.
Read more
Overview
The Lexar NM1090 PRO is a 4TB PCIe 5.0 NVMe SSD that sits at the top of the current performance heap. It's aimed at people who want the absolute fastest storage money can buy, whether that's for AI workloads, 4K video editing, or just loading games before your coffee gets cold. With a 4.5-star rating from 90 reviews, buyers seem pretty happy with what they're getting.
Lexar quotes read speeds up to 14,000 MB/s and writes up to 13,000 MB/s, though our data shows a slightly more conservative 13,000 MB/s for both. Either way, this thing is in the 97th percentile for speed and feature set in our database. It's the kind of drive that makes Gen 4 drives look like they're standing still.
At around $730 USD for the 4TB model, this is not a casual purchase. But if you're building a high-end rig around an AMD Ryzen or Intel i9 and want zero storage bottlenecks, the NM1090 PRO is one of the few drives that can actually deliver on that promise.
Common Questions
Q: Is the Lexar NM1090 PRO good for gaming?
Yes, it scored 83.7 out of 100 for gaming in our testing. DirectStorage support means faster game loads and less CPU overhead, though a good Gen 4 drive will feel nearly identical in most games.
Q: Does the Lexar NM1090 PRO work with PS5?
The NM1090 PRO is a PCIe 5.0 drive, while the PS5 uses PCIe 4.0. It will work in a PS5-compatible enclosure, but you won't get the full Gen 5 speeds, and the drive's heat output may cause issues in the console's tight space.
Q: How does the Lexar NM1090 PRO compare to the Samsung 990 PRO?
The NM1090 PRO is roughly twice as fast in sequential reads and writes, hitting 13,000 MB/s versus the 990 PRO's 7,450 MB/s. But the Samsung has better endurance, runs cooler, and costs less, making it a better value for most users.
Q: Does the Lexar NM1090 PRO need a heatsink?
Yes, we'd strongly recommend one. Gen 5 drives run hot, and several buyers report thermal throttling during sustained writes without additional cooling. The 6nm controller helps, but it's not a substitute for proper airflow or a heatsink.
Who Should Skip This
Skip the NM1090 PRO if you're a casual gamer, a student, or anyone doing standard office work. You won't feel the difference between this and a $150 Gen 4 drive in everyday tasks. It's also a poor choice for laptops, scoring just 80.5 out of 100 for laptop use due to heat and power draw. If you need portable storage, look elsewhere entirely, this drive scored 22.7 out of 100 for portable use. And if you're doing heavy sustained writes, the 14th percentile endurance rating means you might want a drive rated for more write cycles, like the Samsung 990 PRO or WD Black SN850X.
Verdict
Should you buy the Lexar NM1090 PRO? If you need the fastest 4TB NVMe drive on the market and money isn't the primary concern, yes. It's a beast for AI workloads, content creation, and anyone who wants their games to load before the loading screen tips even appear. The 4.5-star rating from 90 reviews backs that up.
But if you're just gaming or doing everyday productivity work, save your money. A Gen 4 drive like the Samsung 990 PRO or WD Black SN850X will feel nearly identical in day-to-day use and cost significantly less. The NM1090 PRO is a specialist's tool, and it's priced like one.
