Four Terabytes of Gen 5 NVMe: For the Library That Never Shrinks (2026)
The Corsair MP700 PRO 4TB brings the full speed of the Phison PS5026-E26 controller and Micron B58R TLC NAND to four terabytes of fast PCIe 5.0 x4 storage, with 8GB of DDR4-4266 cache and 3,000 TBW endurance.
Controller & Memory
The 4TB is the capacity flagship of the MP700 PRO lineup, and it distinguishes itself from the smaller variants in ways beyond raw storage. Sequential speeds match the 2TB at 12,400 MB/s read and 11,800 MB/s write, but random performance takes a step forward: the 4TB is rated at 1.7 million read IOPS compared to 1.5 million on the 2TB. The additional NAND die count that comes with four terabytes of flash translates directly to higher random read parallelism.
The DRAM cache configuration is also the largest in the range. Where the 1TB carries 2GB and the 2TB carries 4GB, the 4TB is equipped with 8GB of DDR4-4266. A larger cache means more mapping table entries fit in fast memory, which reduces latency on large random-access workloads: large game worlds with open streaming zones, databases, and video editing projects with thousands of small assets all benefit from a deeper DRAM map.
For gamers with large installed libraries, the 4TB changes how storage is managed. A modern gaming setup with 20–25 AAA titles installed — each occupying 80–150GB — rapidly exceeds what a 2TB drive can hold with an OS and applications present. The 4TB removes that ceiling. Titles load from fast NVMe rather than being shuffled to a secondary SATA SSD or HDD, which means DirectStorage pipelines and fast load times apply to the entire library, not just the most recently active games.
Video editors and photographers working with large raw archives benefit similarly. A single 4K RAW video project can consume hundreds of gigabytes, and multi-project workflows that need several active projects readily accessible on fast storage are exactly the use case the 4TB is built for. At 11,800 MB/s sequential writes, importing camera footage from fast media cards is not a bottleneck, and exporting finished projects moves quickly.
The Crucial T705 4TB offers higher sequential reads (14,100 MB/s) at a higher price. The WD Black SN850X 4TB and Samsung 990 Pro 4TB both top out around 7,300–7,450 MB/s — fast drives in their own right, but operating at a different speed tier than any Gen 5 drive. The MP700 PRO 4TB occupies the accessible end of the Gen 5 4TB category without sacrificing the core performance credentials of the E26 platform.
Storage Comparisons:
MP700 PRO Performance & Benchmarks
Corsair rates the MP700 PRO 4TB at 12,400 MB/s sequential read and 11,800 MB/s sequential write, matching the 2TB on sequential metrics. Random performance is higher than any other MP700 PRO variant: 1.7 million read IOPS and 1.6 million write IOPS at QD32. The 4TB's larger NAND array operates with greater internal parallelism, which drives the improved random read figure.
Corsair MP700 PRO 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 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
- PNY XLR8 CS3250 1 TB: 14,900 MB/s read, 13,500 MB/s write
- PNY XLR8 CS3250 2 TB: 14,900 MB/s read, 14,000 MB/s write
- Corsair MP700 PRO 4 TB (this drive): 12,400 MB/s read, 11,800 MB/s write
The 8GB DDR4-4266 DRAM cache is the largest in the MP700 PRO range, and its size matters most under random access workloads across the full 4TB address space. A larger DRAM map means fewer cache misses when accessing data spread across the drive's full capacity — relevant for any workload that maintains a large active working set.
Sustained sequential write performance remains strong through the SLC write cache, which is proportionally larger on a 4TB TLC drive than on smaller capacities. For content ingest workflows that move hundreds of gigabytes in a session, the SLC cache provides a longer window of peak-speed operation before the drive transitions to native TLC write speeds.
Corsair MP700 PRO vs Competitors
See how the MP700 PRO stacks up against other M.2 5.0 drives in our database:
Compare with rival drives:
Endurance, TBW & Warranty
Corsair covers the MP700 PRO 4TB with a five-year limited warranty and a 3,000 TBW endurance rating — the highest in the MP700 PRO lineup. At 3,000 TBW on the 4TB model, a video editor writing 100GB daily would project more than 30 years of endurance before reaching the rated threshold. Even under heavier professional ingest workloads of 200GB daily, the drive projects over 15 years of rated life. The TBW scales at approximately 700–750 TBW per terabyte across the range. MTBF is rated at 2,000,000 hours. Corsair's warranty is processed through their website with RMA support in most regions.
Corsair MP700 PRO 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) [?] | 12400 |
| Write speed (MB/s) [?] | 11800 |
| Read IOPS [?] | 1700000 |
| Write IOPS [?] | 1600000 |
| Endurance (TBW) [?] | 3000 |
| MTBF (million hours) [?] | 2000000 |
| Warranty (years) [?] | 5 |
Verdict: Is the MP700 PRO Worth It in 2026?
The Corsair MP700 PRO 4TB is purpose-built for storage-intensive use cases where a 2TB primary drive is not enough and speed cannot be sacrificed to a secondary HDD or SATA SSD. The full MP700 PRO sequential speed, the highest random IOPS in the range at 1.7M reads, 8GB of DDR4 cache, and 3,000 TBW endurance make it a serious option for both large game libraries and video or photo production workflows. The trade-off is price — the 4TB carries a significant premium over the 2TB — but for a build where every title in the library needs to load at Gen 5 speeds, the premium is the point.
+ Pros
- 12,400 MB/s sequential read and 11,800 MB/s write — full MP700 PRO rated speed at 4TB
- 1.7 million read IOPS — highest random read performance in the MP700 PRO lineup
- 8GB DDR4-4266 DRAM cache for efficient large random-access workloads across 4TB
- 3,000 TBW endurance — highest in the range and sufficient for professional write workloads
- 5-year warranty with 2,000,000-hour MTBF
- Eliminates the need for a secondary drive in most gaming and creative workstation builds
- Cons
- Significant price premium over the 2TB variant
- No heatsink included — 4TB drives generate substantial heat under sustained PCIe 5.0 loads
- Crucial T705 4TB achieves 14,100 MB/s reads at a higher but comparable price tier
- PCIe 5.0 x4 M.2 platform required to access rated performance
- 4TB capacity adds weight to the price consideration for users whose library fits in 2TB
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Video Review
How to Install the CORSAIR MP700 PRO PCIe Gen 5 x4 M.2 NVMe 2.0 SSD
