Nextorage NEM-PAC 4 TB: maximum-capacity PS5-optimised SSD with heatsink (2026)
The Nextorage NEM-PAC 4 TB is a PlayStation 5-optimised PCIe 4.0 x4 NVMe SSD with an integrated, non-removable heatsink, based on the Phison PS5027-E27T controller and Kioxia BiCS6 3D TLC NAND, rated 7,400 MB/s reads and 6,400 MB/s writes with a 5-year warranty.
Controller & Memory
Nextorage, the Sony-derived Japanese storage brand, tops its PS5-optimised NEM-PAC line with the 4 TB — the maximum capacity for a single PlayStation 5 M.2 expansion drive. It uses the same DRAM-less Phison PS5027-E27T controller and Kioxia BiCS6 162-layer 3D TLC NAND as the rest of the line, with an integrated, non-removable heatsink and a cooling structure tuned for stable performance through long console sessions.
At 4 TB the drive reaches the full 7,400/6,400 MB/s and the line's most balanced IOPS rating (1,000,000 read and 1,050,000 write), with the largest SLC write cache of the range. The 7,400 MB/s read clears the PlayStation 5's 5,500 MB/s requirement with margin, and 4 TB lets a console owner install a large permanent library in a single slot without managing storage. For an enthusiast who wants the most capacity the PS5 supports in one expansion drive, this is the option.
It also functions in a PC PCIe 4.0 slot, subject to the usual caveat that the fixed heatsink may interfere with a motherboard's M.2 cover. The main trade-offs at 4 TB are the higher absolute price and, for PC builders, the heatsink constraint — but for maximum PS5 capacity with quality hardware, the NEM-PAC 4 TB delivers.
Storage Comparisons:
NEM-PAC Performance & Benchmarks
The NEM-PAC 4 TB is rated at 7,400 MB/s sequential reads and 6,400 MB/s sequential writes over PCIe 4.0 x4, with 1,000,000 random read IOPS and 1,050,000 random write IOPS — the most balanced and highest combined IOPS in the line. The read speed exceeds the PlayStation 5's 5,500 MB/s requirement, so games load at full console speed.
Nextorage NEM-PAC 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-PAC 4 TB (this drive): 7,400 MB/s read, 6,400 MB/s write
The large 4 TB NAND array provides the biggest SLC write cache of the range, sustaining very large game installs and bulk copies at high speed for longer before throughput settles to native TLC write speed. The integrated cooling structure keeps the DRAM-less E27T controller stable through extended sessions inside the PS5's enclosed, low-airflow M.2 slot.
Nextorage NEM-PAC vs Competitors
See how the NEM-PAC 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-PAC with a 5-year warranty and a 1,500,000-hour MTBF. Nextorage does not separately publish a TBW figure for the NEM-PAC; based on the same Kioxia BiCS6 TLC NAND used across the line at a 600 TBW-per-terabyte rate, the 4 TB is estimated at 2,400 TBW. Coverage ends at whichever comes first: five years or the rated endurance.
At a typical 30 GB of writes per day, reaching 2,400 TBW would take more than two centuries, so endurance is not a meaningful limit for console or desktop use. The 5-year warranty term is the binding factor.
Nextorage NEM-PAC 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) [?] | 7400 |
| Write speed (MB/s) [?] | 6400 |
| Read IOPS [?] | 1000000 |
| Write IOPS [?] | 1050000 |
| Endurance (TBW) [?] | 2400 |
| MTBF (million hours) [?] | 1500000 |
| Warranty (years) [?] | 5 |
Verdict: Is the NEM-PAC Worth It in 2026?
The Nextorage NEM-PAC 4 TB is the maximum-capacity PlayStation 5-optimised drive: the Phison E27T controller and Kioxia BiCS6 TLC NAND of the line, full 7,400/6,400 MB/s performance with the highest balanced IOPS, the largest SLC cache, and an integrated cooling structure tuned for the PS5 — with a 5-year warranty.
It is the drive for a console owner who wants the most storage the PS5 supports in a single expansion slot, and a capable cooled Gen4 drive in a PC. The considerations are the higher absolute price, the non-removable heatsink that can complicate PC installs, and the line's unpublished TBW. For PC-only flexibility, the bare NN4LE 4 TB uses identical core hardware.
+ Pros
- Maximum 4 TB capacity for a single PS5 expansion drive
- Full 7,400/6,400 MB/s with the line's highest balanced IOPS
- Largest SLC cache and best sustained write of the NEM-PAC range
- PS5-optimised integrated cooling structure
- Phison E27T with Kioxia BiCS6 162-layer 3D TLC NAND
- 5-year warranty
- Cons
- Higher absolute price than smaller capacities
- Non-removable heatsink can interfere with PC motherboard M.2 covers
- DRAM-less (HMB) — no dedicated DRAM cache
- Nextorage does not separately publish a TBW rating for the line
- Limited Western retail availability
Buy this or similar SSD Storage:
Video Review
PABシリーズと何が違う？Nextorage NEM-PAC(2TB)性能レビュー
