Lexar NM800 Pro 2TB - PCIe 4.0 NVMe SSD Review

Posted on May 17, 2026 by Raymond Chen

The Lexar NM800 Pro 2TB is one of the cleanest flagship Phison-alternative PCIe 4.0 drives - 7,500 MB/s reads, Innogrit IG5236 controller, 176-layer Micron TLC NAND, and a generous 2,000 TBW endurance ceiling.

Lexar NM800 Pro 2TB - PCIe 4.0 NVMe SSD Review

The Lexar NM800 Pro 2 TB pairs the Innogrit Rainier IG5236 eight-channel controller with 176-layer Micron 3D TLC NAND and a dedicated DDR4 DRAM cache, sized at roughly 1 GB per terabyte of capacity (so 2 GB on this 2 TB model). The drive is built on a single-sided M.2 2280 PCB, with the bare-PCB variant aimed at desktop builders relying on motherboard M.2 coolers, and the heatsink variant (sold under the same SKU family) targeting PS5 owners and unshielded laptop slots. KitGuru, StorageReview, ServeTheHome, and Tom's Hardware all teardown-confirmed the IG5236 plus Micron 176-L TLC combination - the same flagship recipe used in the OWC Aura Pro IV and several other top-tier drives.

Lexar ships the NM800 Pro in 512 GB, 1 TB, and 2 TB capacities, with the heatsink variants available at 1 TB and 2 TB. The 2 TB SKU on this page hits the highest peak speeds in the line and carries the largest absolute SLC cache, which lets it sustain longer continuous writes than the smaller siblings. Lexar (now under Longsys ownership and back as a major DRAM/NAND brand) leans on a regional retail footprint that runs heavily in Asia-Pacific and Europe, with growing North American availability through Amazon and Newegg.

The NM800 Pro 2 TB targets builders who want a flagship Innogrit-platform drive at a lower price than the OWC Aura Pro IV 2 TB or Seagate FireCuda 530 2 TB. Its direct rivals include the OWC Aura Pro IV 2 TB (same controller, lower TBW), the WD Black SN850X 2 TB (Phison N1-class, higher random IOPS), the Samsung 990 Pro 2 TB (in-house controller and NAND, polished software), and the Seagate FireCuda 530 2 TB (Phison E18, Seagate's Rescue data recovery service bundled).

✅ Storage Comparisons:

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🚀 Performance and benchmarks

Manufacturer ratings for the NM800 Pro 2 TB land at 7,500 MB/s sequential reads and 6,500 MB/s sequential writes, with random performance up to 1,300,000 read and 1,200,000 write IOPS at high queue depths. Independent reviewers at StorageReview, Tom's Hardware, Guru3D and KitGuru consistently measured CrystalDiskMark sequential reads within a few percent of the rated value and random reads inside the top tier - the IG5236 controller is one of the few designs that competes with the Phison E18 on absolute peak performance.

Performance comparison

Lexar NM800 PRO 2 TB vs M.2 4.0 x 4 peers

Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 4.0 x 4 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.

Lexar NM800 PRO 2 TB (this drive): 7,500 MB/s read, 6,500 MB/s write
PNY XLR8 CS3140 1 TB: 7,500 MB/s read, 5,650 MB/s write
PNY XLR8 CS3140 2 TB: 7,500 MB/s read, 6,850 MB/s write
Asgard AN4 512 GB: 7,500 MB/s read, 5,500 MB/s write
Asgard AN4 1 TB: 7,500 MB/s read, 5,500 MB/s write

Sustained writes are the area where the 2 TB capacity outperforms its smaller siblings. The DDR4 DRAM and large SLC pseudocache allow the drive to absorb roughly 400-600 GB of continuous writes before the cache exhausts, after which writes fall toward the underlying TLC direct-write rate around 1,800-2,400 MB/s. For boot, gaming, and application workloads that profile is invisible; for large video transfers or backup restores the cache size matters - the NM800 Pro 2 TB has more of it than the 1 TB SKU. Tom's Hardware flagged the drive as running notably cooler than the Phison E18 reference design under sustained workloads, attributed to Innogrit's controller efficiency, which is a useful margin for PS5 installs where the slot heatsink is the only cooling option.

🖥️ Endurance and warranty

Lexar backs the NM800 Pro 2 TB with a five-year limited warranty and a 2,000 TBW endurance rating - 1,000 TBW per terabyte of capacity, the highest figure in this comparison set alongside the WD Black SN850X 2 TB. At a heavy 50 GB/day sustained write workload the 2 TB budget lasts roughly 110 years, far past any realistic service life, and a typical desktop user writing 10-20 GB/day will never approach the ceiling. The TBW scales linearly across the range at 1,000 TBW per terabyte. Lexar does not publish an explicit MTBF figure on the consumer NM800 Pro spec sheet. RMA handling runs through Lexar's regional distributors, with the company's own support portal at lexar.com providing serial-number registration and warranty validation. The five-year window is competitive with Samsung, WD, and Seagate at the same tier.

📊 Specs

Category	Value
Capacity [?]	2 TB
Interface [?]	M.2 4.0 x 4
Controller [?]	Innogrit Rainier IG5236
Memory type [?]	Micron 176-L TLC
DRAM [?]	DRAM Cache
Read speed (MB/s) [?]	7500
Write speed (MB/s) [?]	6500
Read IOPS [?]	1300000
Write IOPS [?]	1200000
Endurance (TBW) [?]	2000
MTBF (million hours) [?]	n/a
Warranty (years) [?]	5

Conclusion

The Lexar NM800 Pro 2 TB is one of the best-value Innogrit-platform flagships on the market - it matches the OWC Aura Pro IV 2 TB on controller and NAND while offering twice the TBW endurance and running cooler under load. Buyers who want first-party consumer monitoring software should still consider the Samsung 990 Pro 2 TB or WD Black SN850X 2 TB instead, since Lexar's tooling is less polished. Skip the NM800 Pro if you cannot find it at a reasonable local price - retail availability is uneven outside Asia-Pacific and Europe. As a flagship PCIe 4.0 NVMe at 2 TB it competes credibly on every spec line that matters: speed, endurance, thermals, and warranty length.

+ Pros

7,500 MB/s rated sequential reads on PCIe 4.0
2,000 TBW endurance with 5-year warranty
1,300,000 IOPS rated random reads
Single-sided 2280 PCB fits PS5 and thin laptops
Innogrit IG5236 controller runs cooler than Phison E18
176-layer Micron 3D TLC NAND

- Cons

No included heatsink on the bare-PCB SKU
Lexar consumer software less polished than Samsung Magician
Patchy retail availability outside Asia-Pacific and Europe
No published MTBF figure on Lexar spec sheet
No hardware encryption advertised on the consumer line

🛒 Buy this or similar SSD Storage:

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✨ Video Review

The Lexar Professional NM800 PRO 2TB is surprisingly good - Review

⁉️ FAQ

Yes, the NM800 Pro 2 TB is a strong flagship gaming pick. The drive delivers 7,500 MB/s sequential reads on PCIe 4.0, comfortably at the top of the current consumer tier, and 1,300,000 random read IOPS that match or exceed the Samsung 990 Pro 2 TB and Seagate FireCuda 530 2 TB. Game load times track those drives within a few hundred milliseconds. The 2 TB capacity holds 25-35 modern triple-A games, which is enough for a primary library. DirectStorage GPU decompression is fully supported on a current PCIe 4.0 platform, which matters for newer open-world titles using texture-streaming.

Yes. The PS5 expansion slot needs a PCIe 4.0 NVMe drive rated at 5,500 MB/s or higher sequential reads, dimensions within 110 x 25 x 11.25 mm including heatsink, and the M.2 2280 form factor. The NM800 Pro 2 TB meets the bandwidth requirement comfortably at 7,500 MB/s and uses the correct 2280 form factor. The single-sided PCB makes heatsink fitment trivial - either the bundled Lexar heatsink on the heatsink-bundle SKU, or any third-party heatsink within the 11.25 mm height budget. Multiple PS5 community lists confirm working installs; Tom's Hardware specifically called the drive out for cool PS5 operation.

Yes. The NM800 Pro pairs the Innogrit IG5236 controller with a dedicated DDR4 DRAM buffer sized at approximately 1 GB per terabyte of capacity, so the 2 TB carries 2 GB DRAM, the 1 TB carries 1 GB, and the 512 GB carries 512 MB. Independent teardowns at KitGuru and StorageReview confirm the DRAM chip is present alongside the controller and the Micron NAND packages. Dedicated DRAM gives the drive a measurable advantage over DRAM-less HMB drives such as the WD Black SN770 on sustained random writes and metadata-heavy workloads.

Lexar rates the 2 TB NM800 Pro at 2,000 TBW (terabytes written) over the five-year warranty, equivalent to 1,000 TBW per terabyte of capacity. That figure ties the WD Black SN850X 2 TB at the top of the segment and noticeably exceeds the Samsung 990 Pro 2 TB at 1,200 TBW or the OWC Aura Pro IV 2 TB at 1,000 TBW. At a heavy 50 GB/day sustained workload the budget lasts roughly 110 years - far past the warranty period and well beyond any realistic service life. Heavy capture or video workloads can lean on the drive without rapid TBW depletion.

The two drives are head-to-head at the top of consumer PCIe 4.0. The Samsung 990 Pro 2 TB hits 7,450 MB/s reads and 6,900 MB/s writes versus the NM800 Pro's 7,500 and 6,500. Random IOPS land at 1.4 million read / 1.55 million write for the 990 Pro versus 1.3 million / 1.2 million for the NM800 Pro. Endurance flips the other way: the NM800 Pro at 2,000 TBW versus the 990 Pro at 1,200 TBW. Samsung Magician is more polished than Lexar's tooling, but the NM800 Pro typically retails for less at 2 TB.

Cooler than the Phison E18 reference fleet, according to Tom's Hardware's review of the heatsink variant. The Innogrit IG5236 controller is more power-efficient than the Phison E18 on sustained workloads, which keeps surface temperatures lower under continuous writes. Desktop builds should still use the motherboard's M.2 heatsink, and PS5 owners need a third-party heatsink in the 11.25 mm height budget; Lexar also sells a factory heatsink bundle SKU that fits the slot directly. Light workloads rarely throttle even bare; heavy sustained transfers benefit clearly from any thermal solution.

Yes. The NM800 Pro 2 TB ships on a single-sided M.2 2280 PCB with the controller, DRAM, and Micron NAND packages all mounted on one face of the board. That layout fits PS5 expansion slots (with a thin heatsink), single-sided-only laptop slots, the Steam Deck, and the ROG Ally. The 1 TB and 512 GB variants use the same single-sided layout, so any NM800 Pro capacity will fit a thin slot. The heatsink-bundle SKU adds an aluminium heatsink that sits inside the PS5 slot's 11.25 mm height budget.