Nextorage NN4LE 4 TB: high-capacity DRAM-less PCIe 4.0 NVMe (2026)
The Nextorage NN4LE 4 TB is a PCIe 4.0 x4 NVMe SSD from the G Series LE line, built on the Phison PS5027-E27T controller with Kioxia BiCS6 3D TLC NAND and a host-memory-buffer design, rated 7,200 MB/s reads and 6,200 MB/s writes with 2,400 TBW of endurance and a 5-year warranty.
Controller & Memory
Nextorage, the Sony-derived Japanese storage brand, tops its G Series LE line with the NN4LE 4 TB. It pairs the DRAM-less Phison PS5027-E27T controller with Kioxia BiCS6 162-layer 3D TLC NAND, using the host memory buffer in place of on-board DRAM. At 4 TB the drive carries the most NAND of the line, which yields the highest random read rating (1,400,000 IOPS), the largest SLC write cache, and the highest endurance at 2,400 TBW.
As is common for high-density DRAM-less drives, the 4 TB's rated sequential read (7,200 MB/s) is marginally below the 1 TB and 2 TB (7,400 MB/s); the extra NAND load slightly lowers peak sequential read while improving sustained behaviour and parallelism. The single-sided M.2 2280 layout is notable at 4 TB, since many 4 TB drives are double-sided — a single-sided board improves cooling and compatibility with thin laptops and clearance-limited slots.
The NN4LE ships bare, making it a PC PCIe 4.0 drive first; for a PlayStation 5 it would need a separate heatsink, with Nextorage's NEM-PA series serving as the heatsink-equipped PS5 option. As a high-capacity Gen4 drive for bulk storage and large game libraries, the 4 TB NN4LE is a well-specified, efficient choice.
Storage Comparisons:
NN4LE Performance & Benchmarks
The NN4LE 4 TB is rated at 7,200 MB/s sequential reads and 6,200 MB/s sequential writes over PCIe 4.0 x4, with 1,400,000 random read IOPS and 950,000 random write IOPS. The random read rating is the highest in the line, reflecting the greater NAND parallelism at 4 TB.
Nextorage NN4LE 4 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.
- Patriot Viper PV593 1 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV593 2 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV593 4 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV573 2 TB: 14,000 MB/s read, 12,000 MB/s write
- Nextorage NN4LE 4 TB (this drive): 7,200 MB/s read, 6,200 MB/s write
The large NAND array gives this capacity the biggest SLC write cache of the NN4LE range, so it sustains large sequential transfers — big game installs, media files, backups — longer before throughput settles to native TLC write speed. The DRAM-less HMB design keeps power and heat low even at 4 TB, and the single-sided board helps a heatsink or motherboard cooler make good contact. Everyday responsiveness is strong and close to DRAM-equipped Gen4 drives for typical use.
Nextorage NN4LE vs Competitors
See how the NN4LE stacks up against other M.2 4.0 x 4 drives in our database:
Compare with rival drives:
Endurance, TBW & Warranty
Nextorage covers the NN4LE with a 5-year warranty. The 4 TB model is rated for 2,400 TBW (terabytes written) and an MTBF of 1,500,000 hours, with coverage ending at whichever limit comes first: five years from purchase or 2,400 TBW of cumulative writes.
At a typical 30 GB of writes per day, reaching 2,400 TBW would take more than two centuries, so the 5-year term is the only meaningful limit. Even at a sustained 100 GB per day, the endurance rating spans roughly 65 years. The TBW ceiling is entirely irrelevant for consumer use at this capacity; the warranty length is the binding factor.
Nextorage NN4LE 4 TB Specifications
| Category | Value |
|---|---|
| Capacity [?] | 4 TB |
| Interface [?] | M.2 4.0 x 4 |
| Controller [?] | Phison PS5027-E27T |
| Memory type [?] | Kioxia BiCS6 3D TLC |
| DRAM [?] | No |
| Read speed (MB/s) [?] | 7200 |
| Write speed (MB/s) [?] | 6200 |
| Read IOPS [?] | 1400000 |
| Write IOPS [?] | 950000 |
| Endurance (TBW) [?] | 2400 |
| MTBF (million hours) [?] | 1500000 |
| Warranty (years) [?] | 5 |
Verdict: Is the NN4LE Worth It in 2026?
The Nextorage NN4LE 4 TB is a capable high-capacity DRAM-less PCIe 4.0 drive: the efficient Phison E27T controller, current Kioxia BiCS6 TLC NAND, the highest random read rating and largest SLC cache in the line, and a 5-year warranty with a substantial 2,400 TBW endurance — in a single-sided form factor that is uncommon at 4 TB.
It suits a Gen4 desktop or laptop needing bulk, fast storage for a large game library or media. Buyers who want it in a PlayStation 5 should choose the heatsink-equipped NEM-PA version, and those who prioritise the very highest peak sequential reads might note the 1 TB and 2 TB are rated slightly faster at 7,400 MB/s.
+ Pros
- Highest random read rating in the line (1,400,000 IOPS)
- Largest SLC cache and best sustained write of the NN4LE range
- Single-sided M.2 2280 at 4 TB — better cooling and compatibility
- Current Kioxia BiCS6 162-layer 3D TLC NAND
- Very high 2,400 TBW endurance with a 5-year warranty
- Efficient DRAM-less design runs cool
- Cons
- DRAM-less (HMB) — no dedicated DRAM cache
- Peak sequential read (7,200 MB/s) slightly below the 1/2 TB models
- Ships bare — needs a separate heatsink for PlayStation 5 use
- Limited Western retail availability
- 4 TB carries a higher absolute price than smaller capacities
Buy this or similar SSD Storage:
Video Review
【これぞ爆速！】従来のSSDの１０倍の速度が出るM.2 SSDの正しい選び方とは？【SN580凄い！】
