The Corsair MP700 Pro XT marks a further development within the PCIe 5.0 generation and differs significantly from the manufacturer’s previously tested models. While earlier versions, such as the regular MP700 or the MP700 Pro, served primarily as a technological precursor, the Pro XT variant uses the new Phison PS5028-E28 controller in 6 nm production for the first time. This chip combines slightly improved energy efficiency with increased internal parallelization and, according to the manufacturer, achieves up to 14,900 MB/s for sequential reading. The SSD is available in capacities of 1 TB, 2 TB and 4 TB and is based on 3D TLC NAND in BGA packages with a toggle 5.1 interface.
The MP700 Pro XT is particularly interesting due to its single-sided PCB in the 2 TB version, which means it can also be used in thermally confined motherboard layouts. At the same time, the power supply has been revised compared to its predecessors and designed for lower ripple peaks, which improves stability with PCIe 5.0 bandwidths. The combination of a more efficient controller, reduced power dissipation and optimized NAND control makes this model technically more relevant than the previous Corsair drives, which still used the Phison E26 controller in 12 nm technology and thus generated seemingly higher waste heat. The power specifications in the manufacturer’s document list 6.2 W to 6.5 W average power consumption during active reading or writing and would also represent a significant reduction compared to the first PCIe 5.0 generation, which was usually over 10 W. In practice, however, the smaller node also results in hotspot problems, which you really have to think about, but more on this later in the article, including the data, which can’t be entirely correct, but you can even do the math in the end.
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With the MP700 Pro XT, Corsair has deliberately chosen not to focus on a recommended retail price (RRP) as a means of making a claim. The reason for this is the current extremely volatile price structure of the international NAND market and the fluctuating exchange rates, which have made a stable calculation almost impossible since mid-2025. In particular, the combination of falling NAND prices, rising logistics costs and the different margins of European sales partners is leading to widely diverging end customer prices. Instead of a static RRP, Corsair therefore leaves flexible pricing to the regional retail partners. This approach somewhat relativizes the unrealistic manufacturer specifications and enables a more realistic market launch, even if it creates a certain amount of uncertainty for comparative tests. The Corsair MP700 Pro XT thus positions itself as a technically more mature, thermally more controllable and at the same time economically adaptable PCIe 5.0 SSD, which clearly stands out from the previous Corsair models. The market will (have to) decide the rest.
Unboxing and scope of delivery
The packaging of the Corsair MP700 Pro XT follows the manufacturer’s current corporate design and looks well thought-out and functional despite its simple structure. The case consists of a sturdy, yellow-black cardboard box with a matt surface and a large product image on the front. The key technical data, such as 14,900 MB/s read, 14,500 MB/s write and 3.3 million IOPS for random access, are clearly printed. The reference to the PCIe 5.0 x4 interface and the M.2 2280 form factor makes it clear that this is a high-performance component that requires active or at least massive passive cooling.
Inside, the SSD is housed in a transparent blister pack that protects it from slipping and electrostatic influences. The enclosed accessories are reduced to the essentials and consist of a multilingual booklet with safety and compliance information. Corsair has dispensed with separate installation instructions, which is justifiable in view of the standardized M.2 format. An additional mounting screw is not included, as this is usually already supplied with the motherboards.
The yellow warning sticker directly on the SSD is conspicuous, indicating that operation is only possible with a corresponding heat sink or a separately available Corsair cooler. This label makes sense, as the Phison PS5028-E28 controller reaches high heat densities under full load (we will see this in a moment) and would thermally throttle without sufficient heat dissipation. Overall, the packaging is functional, robust and designed to protect the product without unnecessary material or marketing accessories. Corsair is thus clearly positioning the MP700 Pro XT as a technical precision product and not as a lifestyle item.
Technical data of the Corsair MP700 Pro XT (manufacturer’s specifications)
| Capacity | 1 TB | 2 TB | 4 TB |
|---|---|---|---|
| Model number | CSSD-F10GBMP700PXNH | CSSD-F20GBMP700PXNH | CSSD-F40GBMP700PXNH |
| Form factor | M.2 2280 | M.2 2280 | M.2 2280 |
| Interface | PCI Express 5.0 x4 / NVMe 2.0 | PCI Express 5.0 x4 / NVMe 2.0 | PCI Express 5.0 x4 / NVMe 2.0 |
| Controller | Phison PS5028-E28 | Phison PS5028-E28 | Phison PS5028-E28 |
| NAND type | 3D TLC NAND | 3D TLC NAND | 3D TLC NAND |
| DRAM cache | 1 GB LPDDR4 | 2 GB LPDDR4 | 4 GB LPDDR4 |
| SLC cache | Dynamic | Dynamic | Dynamic |
| Encryption | AES 256-bit | AES 256-bit | AES 256-bit |
| Trim / SMART / Garbage Collection | Supported | Supported | Supported |
| TBW value | 700 TB | 1 400 TB | 2 800 TB |
| MTBF | 1 500 000 h | 1 500 000 h | 1 500 000 h |
| Power consumption (read) | 6,2 W | 6,5 W | 6,5 W |
| Power consumption (write) | 6,2 W | 6,5 W | 6,5 W |
| Power consumption (Dev Slp) | < 5 mW | < 5 mW | < 5 mW |
| Operating temperature | 0 – 70 °C | 0 – 70 °C | 0 – 70 °C |
| Storage temperature | -40 – 85 °C | -40 – 85 °C | -40 – 85 °C |
| Impact resistance | 1 500 G | 1 500 G | 1 500 G |
| Vibration | 20 Hz-80 Hz / 1.52 mm, 80 Hz-2 000 Hz / 20 G | 20 Hz-80 Hz / 1.52 mm, 80 Hz-2 000 Hz / 20 G | 20 Hz-80 Hz / 1.52 mm, 80 Hz-2 000 Hz / 20 G |
| Dimensions (L × W × H) | 80 × 22 × 2.4 mm | 80 × 22 × 2.4 mm | 80 × 22 × 2.4 mm |
| Sequential read (CDM) | 14 900 MB/s | 14 900 MB/s | 14 900 MB/s |
| Sequential write (CDM) | 14 200 MB/s | 14 500 MB/s | 14 400 MB/s |
| 4 K Random Read (IOPS) | 1,5 M | 2,7 M | 2,7 M |
| 4 K Random Write (IOPS) | 3,3 M | 3,3 M | 3,3 M |
| Warranty period | 5 years | 5 years | 5 years |
Important preface to the test
All workstation tests were carried out on a frozen test system that has been running in an unchanged configuration for a long time. This ensures that the results remain consistent and comparable within the test series. However, it is possible that the absolute measured values may differ slightly in direct comparison with the results of other testers. The decisive factor is therefore not the exact number, but the relationship between the values within the benchmarks shown here.
For these measurements, I deliberately extended the AJA test and used a 1024 GB variant instead of the previous methodology. The aim was to shed more light on how the pSLC cache works and also to record possible runtime changes in performance. The CrystalDiskMark is run exclusively in NVMe mode in this review. This results in other, additional findings that may differ from conventional results. The ATTO benchmark, on the other hand, remains in the previous setting, so that comparability with older measurements is guaranteed.
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