Faster NAND, Same Controller: The Phison E26 Pushed Further (2026)
The Corsair MP700 PRO SE 4TB is the current flagship of Corsair's PCIe 5.0 lineup, reaching 14,000 MB/s sequential reads by pairing the proven Phison PS5026-E26 controller with Micron's faster 232-layer TLC NAND running at 2400 MT/s.
Controller & Memory
The "SE" designation stands for Special Edition and signals a specific hardware upgrade rather than a cosmetic rebrand. The underlying controller is identical to the standard MP700 PRO — the Phison PS5026-E26, an 8-channel PCIe 5.0 design that has powered the fastest consumer drives since 2023. What changes is the NAND: where the base MP700 PRO uses Micron 232-layer TLC running at 2000 MT/s, the SE switches to the same NAND die at 2400 MT/s, a 20 percent speed increase at the flash level. Combined with firmware tuning, that NAND speed difference translates directly into the headline gap — 12,400 MB/s reads for the PRO, 14,000 MB/s for the PRO SE.
The 4TB configuration pairs that faster NAND with 8GB of SK Hynix DRAM (2GB per terabyte), maintaining a dedicated DRAM cache large enough to avoid the HMB compromises found in lower-tier PCIe 5.0 drives. The result is consistent random performance rated at 1,700,000 read IOPS and 1,600,000 write IOPS — figures that rival enterprise-grade SSDs from just a few years ago.
Corsair offers the MP700 PRO SE 4TB in three SKUs: a bare drive (requiring a motherboard M.2 heatsink), an Air Cooler variant with an active fan heatsink, and the Hydro X Series for custom water-cooling loops. PCIe 5.0 SSDs generate substantial heat under sustained load; if your motherboard heatsink is thin or absent, the Air Cooler SKU is worth the modest premium. The drive ships in the standard M.2 2280 form factor and fits any desktop motherboard or laptop with a full-length PCIe 5.0 x4 M.2 slot.
This drive sits between the MP700 PRO (same controller, 2000 MT/s NAND) and the MP700 PRO XT (Phison E28, different architecture) within Corsair's lineup. For buyers comparing across brands, the Crucial T705 4TB is the closest peer — also Phison E26-based with similar speeds — while the Seagate FireCuda 540 4TB occupies the same performance class. All three are meaningfully faster than the best PCIe 4.0 drives available.
Storage Comparisons:
MP700 PRO SE Performance & Benchmarks
Corsair rates the MP700 PRO SE 4TB at 14,000 MB/s sequential reads and 12,000 MB/s sequential writes, with random performance specified at 1,700,000 read IOPS and 1,600,000 write IOPS at queue depth 32. Independent tests by StorageReview confirmed sequential reads reaching 14.1 GB/s and writes at 12.2 GB/s in CrystalDiskMark — right on spec.
Corsair MP700 PRO SE 4 TB vs M.2 5.0 peers
Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 5.0 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.
- Corsair MP700 Pro XT 1 TB: 14,900 MB/s read, 14,200 MB/s write
- Corsair MP700 Pro XT 2 TB: 14,900 MB/s read, 14,500 MB/s write
- Corsair MP700 Pro XT 4 TB: 14,900 MB/s read, 14,400 MB/s write
- Crucial T710 1 TB: 14,900 MB/s read, 13,800 MB/s write
- Corsair MP700 PRO SE 4 TB (this drive): 14,000 MB/s read, 12,000 MB/s write
The 2400 MT/s NAND is the source of the SE's advantage over the base PRO. The Phison E26 controller was not changed; Corsair and Phison extracted the additional speed through faster flash and firmware tuning rather than a new silicon design. The 4TB drive benefits from having the most NAND dies active in parallel across all eight channels, which is why the 4TB model achieves the full rated speeds while smaller capacities peak slightly lower.
Under sustained sequential writes that exhaust the SLC write cache — workloads such as copying hundreds of gigabytes in a single session — throughput drops to between 750 MB/s and 1,300 MB/s as the controller writes directly to TLC cells. This behavior is normal for all TLC-based SSDs regardless of PCIe generation and is rarely encountered in typical desktop or workstation use. The large 4TB NAND pool means the SLC cache itself is proportionally large, so cache exhaustion requires a genuinely heavy write session to trigger.
Random IOPS at low queue depths — the workloads most relevant to OS responsiveness and application load times — are excellent. PCIe 5.0 drives consistently outperform their PCIe 4.0 counterparts in 4K random reads, and the E26 platform with dedicated DRAM keeps latency tightly controlled.
Corsair MP700 PRO SE vs Competitors
See how the MP700 PRO SE stacks up against other M.2 5.0 drives in our database:
Compare with rival drives:
Endurance, TBW & Warranty
The Corsair MP700 PRO SE 4TB is covered by a five-year limited warranty and carries a 3,000 TBW endurance rating. At 3,000 TBW, the drive is rated for up to 600 TB written per year over the warranty period — well above what any desktop or workstation user is likely to accumulate. A user writing 100 GB per day, which represents a heavy content creation or software development workload, would accumulate roughly 36 TB per year, reaching the TBW rating in approximately 83 years. Even at 500 GB written daily, the TBW budget lasts over 16 years. The five-year warranty expiration is the governing limit for virtually every buyer. MTBF is rated at 1.6 million hours, a standard fleet-reliability figure.
Corsair MP700 PRO SE 4 TB Specifications
| Category | Value |
|---|---|
| Capacity [?] | 4 TB |
| Interface [?] | M.2 5.0 |
| Controller [?] | Phison PS5026-E26 8 Channel |
| Memory type [?] | Micron 232-L TLC |
| DRAM [?] | Yes |
| Read speed (MB/s) [?] | 14000 |
| Write speed (MB/s) [?] | 12000 |
| Read IOPS [?] | 1700000 |
| Write IOPS [?] | 1600000 |
| Endurance (TBW) [?] | 3000 |
| MTBF (million hours) [?] | 1600000 |
| Warranty (years) [?] | 5 |
Verdict: Is the MP700 PRO SE Worth It in 2026?
The Corsair MP700 PRO SE 4TB is a well-executed iteration on an established PCIe 5.0 platform. The upgrade from 2000 MT/s to 2400 MT/s NAND is a genuine hardware improvement — not a marketing rebrand — and the sequential speed gain over the base MP700 PRO is measurable in benchmarks and in large file transfers. The 3,000 TBW endurance rating and five-year warranty are strong for a consumer drive at this capacity, and the three cooling SKUs give buyers flexibility based on their thermal situation.
Buyers who should look elsewhere: those whose workloads are dominated by random small-file I/O where PCIe 4.0 drives already saturate real-world application needs, and those who cannot confirm their motherboard M.2 slot supports PCIe 5.0. For anyone building or upgrading a high-throughput workstation, content creation rig, or gaming PC with a PCIe 5.0-capable platform, this is among the strongest 4TB options available at the time of writing.
+ Pros
- 14,000 MB/s sequential reads — among the fastest consumer SSDs on the PCIe 5.0 platform
- Micron 232-layer TLC at 2400 MT/s delivers a genuine speed advantage over the base MP700 PRO
- 8GB SK Hynix DRAM on the 4TB model supports consistent random I/O without HMB compromises
- 3,000 TBW endurance is above the ~600 TBW-per-TB industry norm for this capacity
- Five-year warranty with AES 256-bit hardware encryption included
- Three cooling SKUs: bare drive, Air Cooler, and Hydro X for custom water loops
- Cons
- Requires a PCIe 5.0 x4 M.2 slot to reach rated speeds — PCIe 4.0 hosts will see lower throughput
- Sustained sequential writes after SLC cache exhaustion drop to 750-1,300 MB/s
- Generates significant heat under load; the bare-drive SKU needs a quality motherboard heatsink
- Premium pricing over PCIe 4.0 alternatives that handle most workloads adequately
- No 1TB SE SKU — only 2TB and 4TB available in the Special Edition lineup
Buy this or similar SSD Storage:
Video Review
Corsair MP700 Pro SE: Fastest PCIe 5.0 SSD for High-End PCs
