# Kioxia XG5-P 1TB SSD — In-Depth Review & Specs (2026)

The Kioxia XG5-P 1TB — originally branded as Toshiba before the storage division rebranded to Kioxia in 2019 — is a performance-oriented OEM PCIe 3.0 NVMe SSD from the 2017–2018 era. It pairs Toshiba's in-house TC58NCP090GSD 4-channel controller with the company's first-generation 64-layer BiCS3 3D TLC NAND and a DDR3 DRAM buffer. Rated at 3,000 MB/s sequential read and 2,200 MB/s write, it was near the top of the Gen3 performance tier at launch and remains a competent budget upgrade option when pulled from decommissioned OEM systems.

Quick answer: The Kioxia XG5-P 1TB is a well-engineered PCIe 3.0 OEM SSD that has aged gracefully. Toshiba's in-house controller and BiCS3 64L TLC deliver solid Gen3 performance with DRAM-backed consistency that budget DRAM-less drives cannot match. At its current secondary-market pricing, the XG5-P represents a compelling value for breathing new life into an older laptop or desktop that only supports PCIe 3.0. The main caveats are the lack of end-user warranty and the gamble inherent in buying a used drive of unknown provenance. If you can find one with low hours and a reasonable return window, it is a dependable, efficient 1TB NVMe drive that still gets the job done.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 1 TB |
| Interface | M.2 3.0 x 4 |
| Controller | Toshiba TC58NCP090GSD |
| Memory type | Toshiba 64L BiCS3 TLC |
| DRAM cache | DDR3 RAM |
| Sequential read | 3000 MB/s |
| Sequential write | 2200 MB/s |
| Random read IOPS | 320000 |
| Random write IOPS | 265000 |
| Endurance | 747 TBW |
| MTBF | 1.5 |
| Warranty | 3 years |

## Performance

Sequential performance tops out at 3,000 MB/s read and 2,200 MB/s write — within a few percent of the PCIe 3.0 x4 practical ceiling. Real-world large-file copies on a modern platform land around 2,800–2,900 MB/s read and 1,900–2,000 MB/s write. For a drive designed in 2017, these numbers hold up remarkably well: they are roughly 5–6x faster than any SATA SSD and entirely adequate for a responsive Windows 11 or Linux daily driver in 2026.

Random performance is rated at up to 320,000 IOPS read and 265,000 IOPS write at the series level. The 1TB model, with more NAND dies for parallel operations, sits at the high end of this range. In real-world use, the DRAM buffer keeps random I/O latency consistent under mixed workloads — an advantage over DRAM-less designs that can stutter under heavy multitasking. PCMark 10 storage scores place the XG5-P in the upper half of PCIe 3.0 drives, trading blows with the Samsung PM981 and WD Black SN700 (2018) of the same era.

The SLC write cache on the 1TB model is dynamic, typically allocating 20–30 GB of SLC-configured NAND before writes spill to native TLC at roughly 600–800 MB/s. For everyday use, the cache is sufficient; only sustained writes exceeding 30 GB in a single burst will encounter the post-cache speed. Power consumption peaks at approximately 5.5 W under load and idles under 50 mW with NVMe power states enabled — excellent for a DRAM-equipped Gen3 drive. Thermal performance is well-managed by the integrated thermal throttle, with temperatures rarely exceeding 70°C in a typical laptop installation.

## Endurance, TBW & Warranty

As an OEM product, the XG5-P carries no direct end-user warranty from Kioxia. Warranty coverage is provided through the system manufacturer (Dell, HP, Lenovo, etc.) that originally shipped the drive. Drives purchased on the secondary market as pulls or open-box units should be treated as warranty-free. Always confirm return policies with the seller before purchasing an OEM SSD.

## Pros and Cons

**Pros:**

- Toshiba in-house controller and NAND — vertically integrated design
- DDR3 DRAM buffer for consistent random I/O latency
- 3,000 MB/s reads — near the PCIe 3.0 x4 ceiling
- Single-sided 2.23 mm M.2 2280 — fits any ultrabook slot
- Excellent idle power consumption with NVMe power states
**Cons:**

- OEM product — no direct end-user warranty from Kioxia
- PCIe 3.0 — half the bandwidth of entry-level Gen4 drives
- Unknown usage history when buying on secondary market
- SLC cache is modest (~20-30 GB) by modern standards
- Limited firmware update availability for end users


## Verdict

The Kioxia XG5-P 1TB is a well-engineered PCIe 3.0 OEM SSD that has aged gracefully. Toshiba's in-house controller and BiCS3 64L TLC deliver solid Gen3 performance with DRAM-backed consistency that budget DRAM-less drives cannot match. At its current secondary-market pricing, the XG5-P represents a compelling value for breathing new life into an older laptop or desktop that only supports PCIe 3.0. The main caveats are the lack of end-user warranty and the gamble inherent in buying a used drive of unknown provenance. If you can find one with low hours and a reasonable return window, it is a dependable, efficient 1TB NVMe drive that still gets the job done.

## Frequently Asked Questions

### What is the difference between the XG5 and XG5-P?

The XG5-P is the performance variant with higher sequential throughput (3,000/2,200 MB/s vs. the standard XG5's ~2,700/1,300 MB/s) and higher random IOPS. The XG5-P uses higher-binned NAND and more aggressive firmware tuning. The standard XG5 is a mainstream OEM drive, while the XG5-P targets performance-oriented OEM configurations.

### Can I update the firmware on a pulled XG5-P?

Firmware updates for OEM Toshiba/Kioxia drives are typically distributed through the system manufacturer (Dell, HP, Lenovo), not directly from Kioxia. You may be able to find firmware update utilities on the original system manufacturer's support page by searching for your laptop or desktop model rather than the drive itself.

### Is Kioxia the same as Toshiba?

Yes. In October 2019, Toshiba Memory Corporation was renamed to Kioxia Corporation. The XG5-P was originally branded as Toshiba, but identical hardware was later sold under the Kioxia name. The two are interchangeable at the hardware level.

### Does this drive work in a PS5?

No. The PS5 requires a PCIe 4.0 drive with a minimum 5,500 MB/s sequential read speed. The XG5-P is a PCIe 3.0 drive capped at 3,000 MB/s and does not meet the console's requirements.

### How can I check the health of a used XG5-P?

Use a S.M.A.R.T. monitoring tool like CrystalDiskInfo (Windows) or smartctl (Linux) to check the drive's power-on hours, total host writes, and available spare capacity. Look for drives with low power-on hours (under 5,000), host writes well under the rated TBW, and 100% available spare. Avoid drives with reallocated sectors or media errors.

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Last updated: 2026-05-23. Source: https://ssdrive.net/kioxia-xg5-p-1-tb