# Kioxia Exceria 250GB NVMe SSD Review (2026)

The Kioxia Exceria 250GB is a mainstream PCIe 3.0 NVMe SSD built on Kioxia's own controller and Toshiba 96-layer BiCS5 TLC NAND, offering 1,700 MB/s reads at the entry-level NVMe price tier.

Quick answer: The Kioxia Exceria 250GB is a competent entry-level NVMe SSD that delivers 1,700 MB/s reads — a genuine upgrade from SATA — with TLC NAND and DRAM cache at a budget price. The main limitation is capacity: 250GB is suitable for a boot drive and a handful of applications, but tight for game storage. The Exceria's TLC NAND is a real advantage over QLC competitors at similar prices, ensuring consistent write performance. Budget builders who can stretch to the 500GB model gain more usable space and doubled endurance. For the tightest budget where any NVMe upgrade from SATA is the goal, the Exceria 250GB gets the job done.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 250 GB |
| Interface | M.2 3.0 x 4 |
| Controller | Toshiba TC58NC1202GST |
| Memory type | Toshiba 96L 3D TLC |
| DRAM cache | 1GB DDR4 SLC-Cache |
| Sequential read | 1700 MB/s |
| Sequential write | 1600 MB/s |
| Random read IOPS | 350000 |
| Random write IOPS | 400000 |
| Endurance | 100 TBW |
| MTBF | 1.5 |
| Warranty | 5 years |

## Performance

The Kioxia Exceria 250GB is rated for 1,700 MB/s sequential reads and 1,600 MB/s sequential writes, with 350K random read IOPS and 400K random write IOPS. These are entry-level PCIe 3.0 NVMe speeds — roughly three times faster than SATA in sequential reads but well below the 3,200+ MB/s that higher-end PCIe 3.0 drives achieve.

The SLC cache absorbs short burst writes at full speed. On the 250GB model, the cache is small (roughly 10–20 GB), and sustained writes after cache exhaustion settle at native TLC rates around 600–900 MB/s. For a boot drive that handles mostly reads and short writes, the cache handles the workload without issue. Random IO performance is adequate for desktop use, with the DRAM cache providing consistency that DRAM-less drives lack. Gaming load times are improved over SATA but not as fast as higher-tier NVMe drives.

## Endurance, TBW & Warranty

Kioxia rates the Exceria 250GB at 100 TBW with a five-year limited warranty. At a typical boot-drive workload of 10–15 GB per day, the endurance budget covers 18 to 27 years. The 1.5 million hour MTBF is a population-level reliability statistic. Warranty service is handled through Kioxia's RMA process or the retailer.

## Pros and Cons

**Pros:**

- 1,700 MB/s reads — three times faster than SATA
- TLC NAND with DRAM cache at a budget price
- In-house Kioxia controller with native BiCS5 NAND
- 100 TBW endurance with 5-year warranty
- DDR4 DRAM ensures consistent IO performance
**Cons:**

- 1,700 MB/s reads — entry-level NVMe speed
- 250GB fills quickly — boot drive only
- Small SLC cache on the 250GB model
- Outpaced by the Exceria Plus (3,400 MB/s) for modest price difference
- PCIe 3.0 — surpassed by Gen4 drives


## Verdict

The Kioxia Exceria 250GB is a competent entry-level NVMe SSD that delivers 1,700 MB/s reads — a genuine upgrade from SATA — with TLC NAND and DRAM cache at a budget price. The main limitation is capacity: 250GB is suitable for a boot drive and a handful of applications, but tight for game storage. The Exceria's TLC NAND is a real advantage over QLC competitors at similar prices, ensuring consistent write performance. Budget builders who can stretch to the 500GB model gain more usable space and doubled endurance. For the tightest budget where any NVMe upgrade from SATA is the goal, the Exceria 250GB gets the job done.

## Frequently Asked Questions

### Is the Kioxia Exceria 250GB good for gaming?

The Exceria 250GB delivers 1,700 MB/s reads, which is significantly faster than SATA SSDs for game loading. However, the 250GB capacity holds only the OS plus 3–5 AAA games, limiting its usefulness as a game drive. For a boot drive that also holds a couple of frequently-played titles, it works well. For a dedicated game library, the 500GB or 1TB model is a better investment.

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

Yes. The Exceria includes a 1 GB DDR4 DRAM cache that assists the Kioxia TC58NC1202GST controller with flash translation layer management. The DRAM is present across all Exceria NVMe capacities, giving the drive consistent random IO performance that DRAM-less competitors lack. This is a notable feature at the Exceria's budget price point.

### What is the TBW endurance of the Kioxia Exceria 250GB?

The Kioxia Exceria 250GB is rated at 100 TBW (terabytes written), covered by a five-year limited warranty. At a typical boot-drive workload of 10–15 GB per day, the endurance budget covers 18 to 27 years. As a primarily read-driven OS drive, endurance is well within comfortable limits.

### How does the Exceria compare to the Exceria Plus?

The Exceria Plus uses a faster Kioxia controller (TC58NC1201GST) and delivers 3,400/3,200 MB/s read/write — exactly double the Exceria's 1,700/1,600 MB/s. The Plus also offers higher random IO (680K/620K vs 350K/400K IOPS) and larger SLC caches. The standard Exceria is the mainstream tier at a lower price. If budget allows, the Plus is the better performer; if not, the Exceria still delivers a solid NVMe upgrade from SATA.

### Is the Kioxia Exceria 250GB faster than a SATA SSD?

Yes. The Exceria reads at 1,700 MB/s versus SATA's 550 MB/s ceiling — roughly three times faster. Random IO is also significantly better thanks to the NVMe protocol. OS boot times and application launches are noticeably snappier. The improvement is less dramatic than going from SATA to a 3,500 MB/s NVMe drive, but at the Exceria's price point, the three-fold speed increase represents solid value.

### Does the Kioxia Exceria 250GB work in a laptop?

The Exceria uses an M.2 2280 form factor. The 250GB model is typically single-sided or thin enough to fit in most laptops with an NVMe-capable M.2 slot. Power draw is moderate. Verify that the laptop supports NVMe (not SATA-only M.2) before purchasing. The low capacity and modest power draw make it a good candidate for laptop upgrades.

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Last updated: 2026-05-17. Source: https://ssdrive.net/kioxia-exceria-250-gb