Nextorage NEM-PAB 4 TB: maximum-capacity PlayStation 5 SSD with heatsink (2026)
The Nextorage NEM-PAB 4 TB is a PlayStation 5-ready PCIe 4.0 x4 NVMe SSD with a built-in heatsink, based on the Phison PS5027-E27T controller and Kioxia BiCS6 3D TLC NAND, 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 PS5-ready NEM-PAB line with the 4 TB — the maximum capacity for a single PlayStation 5 M.2 expansion drive. It is the heatsink version of the NN4LE 4 TB: 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, fitted with a low-profile heatsink that sits under the console's M.2 cover.
At 4 TB the drive carries the most NAND in the line, giving it the highest random read rating (1,400,000 IOPS), the largest SLC write cache, and the highest endurance at 2,400 TBW. As is typical for high-density DRAM-less drives, peak sequential read is rated marginally lower at 7,200 MB/s versus 7,400 on the smaller capacities — still well above the PS5's 5,500 MB/s requirement. For a console owner who wants to install a large permanent library without juggling storage, 4 TB is the definitive answer.
The drive works just as well in a PC PCIe 4.0 slot, where the heatsink helps thermals. The trade-off at 4 TB is the higher absolute price, but for those who want maximum capacity in one drive, the NEM-PAB 4 TB delivers it with a quality controller and NAND and a long warranty.
Storage Comparisons:
NEM-PAB Performance & Benchmarks
The NEM-PAB 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, and the read speed still clears the PlayStation 5's requirement with margin.
Nextorage NEM-PAB 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 NEM-PAB 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 range, so it sustains very large game installs and bulk copies longer before throughput settles to native TLC write speed. The built-in heatsink keeps the DRAM-less E27T controller cool in the PS5's enclosed M.2 slot and in warm PC builds, preventing thermal throttling under sustained load.
Nextorage NEM-PAB vs Competitors
See how the NEM-PAB stacks up against other M.2 4.0 x 4 drives in our database:
Compare with rival drives:
Endurance, TBW & Warranty
Nextorage covers the NEM-PAB 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. For console or desktop use the TBW ceiling is entirely irrelevant; the warranty length is the binding factor.
Nextorage NEM-PAB 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 NEM-PAB Worth It in 2026?
The Nextorage NEM-PAB 4 TB is the maximum-capacity choice in Nextorage's PlayStation 5-ready line: the efficient Phison E27T controller, Kioxia BiCS6 TLC NAND, the highest random read rating and largest SLC cache in the range, a fitted low-profile heatsink, and a 5-year warranty with 2,400 TBW endurance.
It is the drive for a console owner who wants to install a large permanent library in a single expansion slot, and a capable cooled Gen4 drive in a PC. The considerations are the higher absolute price and the marginally lower peak sequential read (7,200 MB/s) than the 1/2 TB models — neither of which affects PS5 performance, which is well within the drive's rated speed.
+ Pros
- Maximum 4 TB capacity for a single PS5 expansion drive
- Highest random read rating in the line (1,400,000 IOPS)
- Largest SLC cache and best sustained write of the NEM-PAB range
- Fitted low-profile heatsink; PS5/PS5 Slim/PS5 Pro compatible
- 2,400 TBW endurance with a 5-year warranty
- Phison E27T with Kioxia BiCS6 162-layer 3D TLC NAND
- Cons
- DRAM-less (HMB) — no dedicated DRAM cache
- Higher absolute price than smaller capacities
- Peak sequential read (7,200 MB/s) marginally below the 1/2 TB
- Costs more than the bare NN4LE for PC-only use
- Limited Western retail availability
Buy this or similar SSD Storage:
Video Review
DON'T BUY Nextorage Japan NEM-PAB 2TB SSD BEFORE WATCHING THIS VIDEO! 😱🚫
