# Kioxia Exceria Pro 1TB - PCIe 4.0 NVMe SSD Review (2026)

The Kioxia Exceria Pro 1TB is Kioxia's flagship consumer PCIe 4.0 NVMe - a 7,300 MB/s drive built around the company's own 112-layer BiCS5 TLC NAND and a Kioxia-branded E18-class controller.

Quick answer: The Kioxia Exceria Pro 1 TB makes sense for buyers who want a flagship-tier PCIe 4.0 NVMe from an actual NAND manufacturer, especially as a PS5 expansion drive or a single-sided laptop upgrade where the slim 2280-S2 PCB fits enclosures that thicker double-sided drives cannot. Anyone running heavy sustained-write workflows should step up to the 2 TB capacity for the doubled TBW, or look at the WD Black SN850X 2 TB or Samsung 990 Pro 2 TB for similar long-write profiles. The drive's main weaknesses are heat under sustained load without a heatsink and a smaller installed base than Samsung or WD, which can complicate RMA in some regions. As a primary PCIe 4.0 boot and game drive at 1 TB it remains competitive on speed and clearly above the field on NAND provenance.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 1 TB |
| Interface | M.2 4.0 x 4 |
| Controller | Kioxia |
| Memory type | Kioxia 112-L TLC |
| DRAM cache | SK Hynix DDR4 |
| Sequential read | 7300 MB/s |
| Sequential write | 6400 MB/s |
| Random read IOPS | 1000000 |
| Random write IOPS | 1100000 |
| Endurance | 400 TBW |
| MTBF | 1.5 |
| Warranty | 5 years |

## Performance

Manufacturer-rated sequential figures on the 1 TB Exceria Pro are 7,300 MB/s reads and 6,400 MB/s writes, with random performance up to 1,000,000 read and 1,100,000 write IOPS at high queue depths. Independent reviewers at Guru3D, KitGuru, TechPowerUp and eTeknix consistently measure CrystalDiskMark sequential reads within a few percent of the rated value, and 4K random reads in the same neighbourhood as the Samsung 990 Pro 1 TB and WD Black SN850X 1 TB.

Sustained writes are where this generation of PCIe 4.0 flagships separates. The 1 TB Exceria Pro maintains its 6,000+ MB/s peak only as long as the SLC pseudocache lasts; reviewers consistently find the dynamic cache exhausts after roughly 200-300 GB of continuous writing, after which the drive falls toward the underlying TLC direct-write rate of around 1,800-2,200 MB/s. For boot, application, and gaming workloads that profile is invisible; for video editing or large dataset moves, plan around the cache size. The drive runs hot under load - basic-tutorials.com flagged elevated temperatures during sustained workloads, so an M.2 heatsink is recommended. Real-world game load times track the Samsung 990 Pro and WD Black SN850X 1 TB to within a few hundred milliseconds, and DirectStorage GPU decompression works as expected on a supported PCIe 4.0 platform.

## Endurance, TBW & Warranty

Kioxia rates the Exceria Pro 1 TB for 400 TB written (TBW) over a five-year warranty period, whichever comes first. At a heavy 50 GB/day write workload that endurance budget lasts roughly 22 years - longer than the drive's likely service life in any consumer build - and a typical desktop user writing 10-20 GB/day will never approach the limit. The published MTTF rating is 1.5 million hours, a population statistic rather than a per-drive promise. The 2 TB sibling doubles TBW to 800 TB, which is the better long-term fit for sustained creator workloads. The endurance lands a step below the Samsung 990 Pro 1 TB and WD Black SN850X 1 TB, which both quote 600 TBW at the same capacity. Kioxia handles consumer RMA through regional distributors in many markets rather than a direct factory exchange; check the warranty card or kioxia.com support portal before purchase.

## Pros and Cons

**Pros:**

- 7,300 MB/s sequential reads on PCIe 4.0
- Kioxia 112-layer BiCS5 TLC NAND
- Dedicated SK Hynix DDR4 DRAM cache
- Single-sided 2280-S2 PCB fits PS5 and thin laptops
- 400 TBW endurance with 5-year warranty
- 1,000,000 IOPS rated random reads
**Cons:**

- Runs hot under sustained writes without a heatsink
- No included heatsink in the retail box
- SLC cache exhausts after roughly 250 GB continuous writes
- Only 1 TB and 2 TB capacities, no 4 TB option
- Lower TBW than Samsung 990 Pro and WD SN850X at 1 TB


## Verdict

The Kioxia Exceria Pro 1 TB makes sense for buyers who want a flagship-tier PCIe 4.0 NVMe from an actual NAND manufacturer, especially as a PS5 expansion drive or a single-sided laptop upgrade where the slim 2280-S2 PCB fits enclosures that thicker double-sided drives cannot. Anyone running heavy sustained-write workflows should step up to the 2 TB capacity for the doubled TBW, or look at the WD Black SN850X 2 TB or Samsung 990 Pro 2 TB for similar long-write profiles. The drive's main weaknesses are heat under sustained load without a heatsink and a smaller installed base than Samsung or WD, which can complicate RMA in some regions. As a primary PCIe 4.0 boot and game drive at 1 TB it remains competitive on speed and clearly above the field on NAND provenance.

## Frequently Asked Questions

### Is the Kioxia Exceria Pro 1TB good for gaming?

Yes, it is a strong gaming pick. The Exceria Pro 1 TB delivers 7,300 MB/s sequential reads on PCIe 4.0 with random read performance rated at 1,000,000 IOPS, both at the top of the current consumer tier. Game level loads and Steam library installs run as fast as on the Samsung 990 Pro 1 TB or WD Black SN850X 1 TB within margin of error. DirectStorage GPU decompression is fully supported, which matters for modern open-world titles. The 1 TB capacity holds around 12-18 modern triple-A games, so most pure gaming users will be satisfied; heavy library hoarders should consider the 2 TB Exceria Pro instead.

### Is the Kioxia Exceria Pro 1TB compatible with the PS5?

Yes. The PS5 expansion slot requires a PCIe 4.0 NVMe drive rated at 5,500 MB/s or higher sequential reads, dimensions within 110 x 25 x 11.25 mm including heatsink, and the M.2 2280 form factor. The Exceria Pro 1 TB meets the bandwidth requirement comfortably at 7,300 MB/s, uses the correct form factor, and ships as a thin single-sided 2280-S2 PCB so any third-party heatsink that fits the 11.25 mm height budget will install cleanly. Sony does not list the Exceria Pro by name on its official compatibility list, but the drive meets all the published criteria.

### Does the Kioxia Exceria Pro have a DRAM cache?

Yes. The 1 TB Exceria Pro carries a dedicated SK Hynix DDR4 DRAM buffer chip alongside the controller and four NAND packages. Independent teardowns at TechPowerUp and KitGuru confirm the DRAM is present and sized appropriately for a 1 TB consumer NVMe, typically 1 GB on this class of drive. The dedicated DRAM gives the Exceria Pro a measurable edge over DRAM-less HMB drives on sustained random writes, NTFS metadata operations, and small-file workloads where the DRAM mapping table avoids round trips to system memory.

### What is the TBW endurance of the Kioxia Exceria Pro 1 TB?

Kioxia rates the 1 TB Exceria Pro at 400 TB written (TBW) over five years. At a heavy 50 GB/day sustained write workload the drive reaches that ceiling in roughly 22 years - longer than its realistic service life. A typical desktop user writing 10-20 GB/day will never approach the limit. The 2 TB Exceria Pro doubles the figure to 800 TBW, which is the right choice if your workload includes regular video capture, large content libraries, or game-engine cache churn. The 1 TB endurance lands lower than the Samsung 990 Pro 1 TB (600 TBW) and WD Black SN850X 1 TB (600 TBW).

### How does the Kioxia Exceria Pro compare to the Samsung 990 Pro?

The Samsung 990 Pro 1 TB and Kioxia Exceria Pro 1 TB compete head-to-head. Both list 7,300+ MB/s reads on PCIe 4.0; the 990 Pro lists slightly higher writes at 6,900 versus 6,400 MB/s, and higher random write IOPS at 1.55 million versus 1.1 million. The 990 Pro also offers a higher 600 TBW versus the Exceria Pro's 400 TBW on the 1 TB capacity. The Kioxia counters with in-house NAND provenance, since Kioxia operates the BiCS production line itself, and a slim single-sided PCB that always clears PS5 and laptop slots. Picking between the two is largely a price and regional-support decision.

### Does the Kioxia Exceria Pro need a heatsink?

Yes, it should run with one in any sustained workload. Independent reviewers including basic-tutorials.com flagged the drive running hot under continuous writes, with surface temperatures climbing into thermal-throttling range without active cooling. Desktop builds should use the motherboard's M.2 heatsink, and PS5 owners must add a third-party heatsink that fits the slot's 11.25 mm height budget. Light-load use - boot, light gaming, application installs - rarely triggers throttling, but heavy file transfers, capture workloads, or extended game install sessions benefit noticeably from cooling.

### Is the Exceria Pro 1 TB single-sided?

Yes. The Exceria Pro 1 TB uses Kioxia's slim 2280-S2-M PCB with the controller, DRAM, and NAND packages all mounted on one side of the board. That layout matters for ultraportable laptops with single-sided-only M.2 slots, the Steam Deck, the ROG Ally, and the PS5 expansion slot where heatsink height combines with PCB thickness to a hard 11.25 mm maximum. The 2 TB Exceria Pro adds more NAND packages but remains single-sided as well, so either capacity will fit a thin slot.

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Last updated: 2026-05-17. Source: https://ssdrive.net/kioxia-exceria-pro-1-tb