# Corsair MP700 Pro XT 1TB — PCIe 5.0 NVMe SSD for Enthusiasts (2026)

The Corsair MP700 Pro XT 1TB is a PCIe 5.0 NVMe drive built on the Phison PS5028-E28 controller with Kioxia BiCS8 218-layer TLC NAND, rated at 14,900 MB/s sequential reads and 14,200 MB/s sequential writes.

Quick answer: The Corsair MP700 Pro XT 1TB makes a strong case as the entry point into Phison's E28 generation: 14,900 MB/s reads, 3.3 million write IOPS, low operating power, and Corsair's 5-year warranty behind it. The E28's efficiency advantage over first-generation Gen5 drives is real — this is a PCIe 5.0 SSD that does not require active cooling to sustain performance, which removes one of the main friction points of early Gen5 adoption.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 1 TB |
| Interface | M.2 5.0 |
| Controller | Phison PS5028-E28 8 Channel |
| Memory type | Kioxia BiCS8 218-L TLC |
| DRAM cache | Yes |
| Sequential read | 14900 MB/s |
| Sequential write | 14200 MB/s |
| Random read IOPS | 1500000 |
| Random write IOPS | 3300000 |
| Endurance | 700 TBW |
| MTBF | 2000000 |
| Warranty | 5 years |

## Performance

The Corsair MP700 Pro XT 1TB is rated at 14,900 MB/s sequential reads and 14,200 MB/s sequential writes under PCIe 5.0 x4 — bandwidth figures that roughly double the ceiling of the fastest PCIe 4.0 x4 drives. Sequential write speeds on the 1TB sit 300 MB/s below the 2TB model's 14,500 MB/s, a normal result of fewer NAND die operating in parallel and a proportionally smaller pSLC write cache. Once the SLC cache is saturated on large sustained write jobs the 1TB transitions to native TLC write speeds, which are lower; users with heavy sequential-write workloads (video capture, large backup jobs, disk imaging) will feel this ceiling sooner than on the 2TB.

For random access, Corsair rates the 1TB at 1,500,000 read IOPS and 3,300,000 write IOPS — an asymmetric profile that is characteristic of the Phison E28 architecture. The controller is specifically engineered for high random write density, and the 3.3 million write IOPS figure is among the highest published for a consumer NVMe drive at any capacity. Random read IOPS at 1.5 million is competitive but not exceptional in the Gen5 field; workloads dominated by random reads (database operations, game shader compilation) will not see a meaningful advantage over a well-optimized E26 drive.

Thermal behaviour is a key improvement over the previous-generation MP700 Pro. The E28's 6nm process operates with a typical power draw of 3–4W, allowing the drive to maintain rated speeds under sustained load without active cooling in most consumer motherboard environments. Drives built on the 12nm E26 frequently exceeded 9W and required dedicated airflow or heatsinks to prevent thermal throttling. The copper thermal layer in the MP700 Pro XT's label is a passive supplement, and the drive is well-suited to installations on motherboards with standard M.2 thermal pads.

## Endurance, TBW & Warranty

Corsair backs the MP700 Pro XT with a 5-year limited warranty across all capacity variants. The 1TB model carries a TBW (terabytes written) endurance rating of 700 TBW — the cumulative write volume covered before the endurance warranty clause applies. At a typical desktop write workload of 30 GB per day, 700 TBW represents over 63 years of use before the endurance budget is exhausted. Even at 100 GB per day — typical of active content creation workflows — the drive would take nearly 20 years to reach its rated limit. For the overwhelming majority of buyers the 5-year warranty clock will expire long before the TBW ceiling becomes relevant. Video editors or data engineers writing 300 GB or more per day should consider the 2TB model, which carries a higher TBW rating in proportion to its capacity. Corsair handles warranty service directly through its established RMA process, with coverage available across major Western markets through Corsair's retail and online distribution network.

## Pros and Cons

**Pros:**

- 14,900 MB/s sequential reads — top-tier PCIe 5.0 performance
- Phison E28 (6nm) runs at 3–4W typical — cooler than first-gen E26 drives
- Kioxia BiCS8 218-layer TLC with 1GB SK hynix LPDDR4 DRAM
- 3,300,000 write IOPS — among the highest on any consumer NVMe
- 5-year warranty with 700 TBW endurance
- No external heatsink required for standard consumer workloads
- Corsair brand with established Western RMA and support network
**Cons:**

- 1TB write speed (14,200 MB/s) is 300 MB/s below the 2TB model
- Premium PCIe 5.0 pricing; limited real-world benefit over Gen4 for gaming and OS use
- No heatsink included — relies on copper label layer and motherboard thermal pads
- Smallest capacity in the Pro XT lineup; heavy sustained-write users will outgrow the TBW budget faster than larger variants
- PCIe 5.0 requires a Gen5-capable M.2 slot to reach rated speeds — older platforms cap at Gen4


## Verdict

The Corsair MP700 Pro XT 1TB makes a strong case as the entry point into Phison's E28 generation: 14,900 MB/s reads, 3.3 million write IOPS, low operating power, and Corsair's 5-year warranty behind it. The E28's efficiency advantage over first-generation Gen5 drives is real — this is a PCIe 5.0 SSD that does not require active cooling to sustain performance, which removes one of the main friction points of early Gen5 adoption.

The 1TB is the right buy for enthusiasts building a high-end desktop who want the fastest available interface without the premium for the 2TB. It is a less obvious upgrade for anyone coming from a current PCIe 4.0 drive used primarily for gaming and OS tasks — the sequential bandwidth gap is large on paper but largely invisible in those workloads. Buyers who regularly move large files, work with uncompressed video, or want the most future-proof storage tier available today will find the Pro XT 1TB delivers on its specifications. Those who can wait or stretch budget should compare the 2TB, where higher write speed and a larger SLC cache change the sustained-write picture meaningfully.

## Frequently Asked Questions

### What NAND does the Corsair MP700 Pro XT 1TB use?

The MP700 Pro XT uses Kioxia BiCS8 218-layer 3D TLC NAND — Kioxia's current-generation flash designed for the PCIe 5.0 tier. BiCS8 is a 218-layer stacked TLC design that offers higher bit density than the previous BiCS6 and BiCS7 generations. The 1TB model pairs this NAND with 1GB of SK hynix LPDDR4 DRAM for the logical-to-physical address mapping table, ensuring consistent random-access performance across varied workloads.

### What controller does the Corsair MP700 Pro XT 1TB use?

The MP700 Pro XT uses the Phison PS5028-E28 — an 8-channel PCIe 5.0 controller built on TSMC's 6nm process. The E28 is the successor to the E26 that powers Corsair's earlier MP700 Pro and competitors like the Crucial T705 and Seagate FireCuda 540. The 6nm manufacturing process is the key improvement: it allows the E28 to operate at 3–4W typical power draw, compared to the 6–9W common on 12nm E26 drives. This efficiency advantage translates directly to lower operating temperatures and better sustained-speed consistency without active cooling.

### Does the Corsair MP700 Pro XT 1TB need a heatsink?

Not for typical consumer use. The MP700 Pro XT ships without an aluminium heatsink but incorporates a copper thermal layer embedded in the product label for passive heat spreading. The Phison E28 controller's 6nm process keeps typical power draw at 3–4W — low enough that most modern motherboards with built-in M.2 thermal pads provide adequate cooling. For sustained sequential-write workloads in builds without any M.2 thermal contact (open-air platforms or boards without thermal pads), an inexpensive aftermarket M.2 heatsink is a sensible addition. The drive does not benefit from an active cooler under normal gaming or productivity workloads.

### What is the TBW endurance rating for the MP700 Pro XT 1TB?

Corsair rates the 1TB model at 700 TBW (terabytes written), covered under the drive's 5-year limited warranty. At 30 GB per day written — a typical desktop workload — 700 TBW represents over 63 years of use before reaching the rated limit. At 100 GB per day (active content creation), it would take approximately 19 years. For the vast majority of users, the 5-year warranty period will expire well before 700 TBW is reached. Users with daily writes exceeding 200–300 GB — video capture, bulk archive workflows — should evaluate the 2TB model, which carries a proportionally higher TBW rating.

### Why are write IOPS higher than read IOPS on the MP700 Pro XT?

The MP700 Pro XT is rated at 3,300,000 write IOPS and 1,500,000 read IOPS — an unusual asymmetric profile that is a genuine characteristic of the Phison E28 architecture. The E28 is specifically designed to maximize random write density, using an internal buffering approach that allows far more concurrent write operations than its read pipeline can handle simultaneously. This is not a spec sheet error. In practice, workloads that exercise extreme random write depth (database journals, enterprise write-intensive patterns) benefit from this; everyday consumer random-read workloads are not meaningfully affected by the asymmetry.

### How does the Corsair MP700 Pro XT 1TB compare to the Crucial T705 1TB?

Both are PCIe 5.0 NVMe drives with DRAM caches, but they use different controllers. The T705 uses the Phison E26 (12nm), while the MP700 Pro XT uses the newer E28 (6nm). The E28's process advantage gives the Pro XT better thermal behaviour and lower power draw in sustained use. On paper, the T705 1TB is specified at 14,500 MB/s sequential read and 11,700 MB/s write — the Pro XT's 14,200 MB/s write and 14,900 MB/s read are competitive, with the Pro XT having a read edge. Both use TLC NAND with DRAM; the T705 uses Micron 232-layer, the Pro XT uses Kioxia BiCS8 218-layer. Corsair's 5-year warranty on the Pro XT matches Crucial's coverage.

### Does the Corsair MP700 Pro XT 1TB work in a PS5?

Yes. The MP700 Pro XT 1TB is an M.2 2280 drive that fits the PS5's expansion bay. Sony requires a minimum sequential read speed of 5,500 MB/s, which the Pro XT exceeds by a wide margin. In the PS5, the drive operates at PCIe 4.0 speeds (the PS5's M.2 slot is Gen4), so the full Gen5 bandwidth is not used — but performance is still far above Sony's threshold. The drive does not include a heatsink, but a thin-profile M.2 heatsink is recommended for PS5 installations to meet Sony's thermal guidance for the expansion slot.

### Why is the 1TB write speed lower than the 2TB?

The Corsair MP700 Pro XT 1TB is rated at 14,200 MB/s sequential writes versus 14,500 MB/s for the 2TB. This is a standard NAND parallelism effect: the 1TB model has fewer NAND die operating simultaneously, which limits the maximum bandwidth available for write operations and reduces the size of the pSLC (pseudo-SLC) write cache. When sustained writes exceed the SLC cache threshold, the 1TB transitions to native TLC write speeds at a lower rate than the 2TB. For gaming, OS use, and general file transfers this difference is not perceptible. For sustained large-file writes — video capture, disk cloning, multi-GB archive jobs — the 2TB's larger cache and higher write ceiling are noticeably faster.

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Last updated: 2026-06-16. Source: https://ssdrive.net/corsair-mp700-pro-xt-1-tb