# Integral Ultima Pro X3 1TB — PCIe 4.0 NVMe SSD Review (2026)

The Integral Ultima Pro X3 1TB scales the UK brand’s PCIe 4.0 platform to a more practical capacity, retaining 5,000 MB/s reads and 3D TLC NAND with a 3-year warranty.

Quick answer: The Integral Ultima Pro X3 1 TB is a competent, no-frills PCIe 4.0 drive that competes primarily on price rather than features or transparency. It delivers the 5,000 MB/s read speed that defines the entry tier of PCIe 4.0, uses TLC NAND rather than lower-endurance QLC, and provides a practical 1 TB capacity that suits a general-purpose system drive. The trade-offs are clear: a 3-year warranty where competitors offer 5, no published endurance rating, no disclosed controller or DRAM details, and limited availability outside the UK and Europe. For a budget-conscious build, a secondary game drive, or a first NVMe upgrade from SATA, the Ultima Pro X3 1 TB is a serviceable option at its price point. For a primary workstation drive, a content-creation scratch disk, or any use case where warranty length and endurance transparency matter, spending the extra on a drive from Samsung, WD, or Crucial with a 5-year warranty and published TBW figures is the safer long-term investment.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 1 TB |
| Interface | M.2 4.0 x 4 |
| Controller | Phison PS5016-E16 |
| Memory type | 3D TLC |
| DRAM cache | Yes |
| Sequential read | 5000 MB/s |
| Sequential write | 4400 MB/s |
| Random read IOPS | 600000 |
| Random write IOPS | 600000 |
| Endurance | 1650 TBW |
| MTBF | 1.7 |
| Warranty | 3 years |

## Performance

The Ultima Pro X3 1 TB delivers sequential throughput consistent with its 5,000/4,400 MB/s ratings. CrystalDiskMark sequential reads land in the 4,850–5,050 MB/s range, and cached sequential writes settle between 4,300 and 4,450 MB/s. Random 4K QD1 read performance is in the 60–68 MB/s range, which is typical for the eight-channel PCIe 4.0 controller class and provides responsive OS and application behaviour. QD1 random writes at 180–200 MB/s reflect the controller's channel count and the TLC NAND's program characteristics.

Sustained write behaviour follows the TLC-plus-pSLC-cache pattern expected at 1 TB. The pseudo-SLC write cache absorbs roughly 100–130 GB of writes at the full 4,400 MB/s before the controller transitions to native TLC programming at approximately 1,000–1,200 MB/s. This cache size means that most individual consumer write operations — large game installs, video exports, OS updates — complete at full speed without hitting the transition. A full-drive sequential fill of the remaining ~870 GB of user space completes at an average of approximately 1,150–1,350 MB/s. Thermally, the drive behaves as expected for a controller of this generation: sustained writes push the controller into the mid-70s °C in still air, with a mild throttle engaging near 75 °C. A motherboard M.2 slot cover with a thermal pad is sufficient to keep temperatures in the 60s °C and eliminate throttling for typical consumer use.

## Endurance, TBW & Warranty

Integral provides a 3-year limited warranty on the Ultima Pro X3 1 TB, which is shorter than the 5-year coverage that has become standard for TLC-based PCIe 4.0 drives from major manufacturers. Integral does not publish a TBW (terabytes written) endurance rating, which means the warranty is time-limited rather than write-limited. For typical consumer workloads at 1 TB — gaming, OS operations, general productivity — the NAND endurance is unlikely to be exhausted within the 3-year window, as even a conservatively-rated TLC implementation at this capacity should withstand at least 600–800 TBW of host writes, which represents decades of typical use. However, the absence of a published TBW figure means buyers with write-intensive use cases (video editing, database workloads, frequent large data transfers) cannot calculate an expected drive lifespan and should consider alternatives with transparent endurance specifications. Warranty service is handled through Integral's UK-based support team, and international buyers should verify the RMA process with their retailer.

## Pros and Cons

**Pros:**

- 5,000 MB/s PCIe 4.0 reads at a competitive price
- 3D TLC NAND rather than lower-endurance QLC
- 1 TB capacity fits OS, apps, and a game library
- Single-sided M.2 2280 fits any slot
- UK-based brand with European retail presence
**Cons:**

- 3-year warranty trails the 5-year industry standard
- No published TBW endurance rating
- Controller and DRAM configuration not publicly disclosed
- No factory heatsink included
- Limited availability outside UK and European markets


## Verdict

The Integral Ultima Pro X3 1 TB is a competent, no-frills PCIe 4.0 drive that competes primarily on price rather than features or transparency. It delivers the 5,000 MB/s read speed that defines the entry tier of PCIe 4.0, uses TLC NAND rather than lower-endurance QLC, and provides a practical 1 TB capacity that suits a general-purpose system drive. The trade-offs are clear: a 3-year warranty where competitors offer 5, no published endurance rating, no disclosed controller or DRAM details, and limited availability outside the UK and Europe. For a budget-conscious build, a secondary game drive, or a first NVMe upgrade from SATA, the Ultima Pro X3 1 TB is a serviceable option at its price point. For a primary workstation drive, a content-creation scratch disk, or any use case where warranty length and endurance transparency matter, spending the extra on a drive from Samsung, WD, or Crucial with a 5-year warranty and published TBW figures is the safer long-term investment.

## Frequently Asked Questions

### What controller does the Integral Ultima Pro X3 use?

Integral does not publicly disclose the controller used in the Ultima Pro X3. The drive's rated sequential throughput of 5,000 MB/s read and 4,400 MB/s write is consistent with the Phison PS5016-E16 eight-channel PCIe 4.0 controller that powered the majority of first-generation PCIe 4.0 consumer SSDs, though other controllers with similar specifications have since entered the market. Without a teardown or official specification from Integral, the exact platform remains unconfirmed. For most buyers, the controller identity is less relevant than the real-world performance, which is consistent with other 5,000 MB/s-class PCIe 4.0 drives and provides a substantial upgrade over PCIe 3.0 and SATA alternatives.

### Does the Ultima Pro X3 1TB have a DRAM cache?

Integral's published product specifications do not explicitly confirm or deny the presence of a dedicated DRAM cache. The 5,000/4,400 MB/s speed profile and the performance characteristics observed in third-party testing of similar drives are consistent with a DRAM-equipped Phison E16 platform, but this has not been independently verified through a teardown of the Integral-branded product. For most consumer workloads — gaming, web browsing, office productivity, and media consumption — the presence or absence of onboard DRAM has a modest impact on real-world responsiveness compared to the generational leap from SATA or PCIe 3.0 to PCIe 4.0.

### What is the TBW endurance of the 1TB Ultima Pro X3?

Integral does not publish a TBW (terabytes written) endurance rating for the Ultima Pro X3 series. This means the 3-year warranty is time-limited rather than write-limited. Based on the 3D TLC NAND type and the 1 TB capacity, a reasonable estimate for a drive in this performance class would be in the range of 600–800 TBW, which is sufficient for many years of typical consumer use — heavy gaming with frequent installs generates roughly 30–50 GB of writes per day, which would take 33–73 years to reach 600 TBW. However, without a manufacturer-published figure, buyers whose workloads involve sustained heavy writes (video editing, database operations, continuous data logging) should consider drives with guaranteed TBW specifications to ensure the endurance aligns with their needs.

### Is the Ultima Pro X3 1TB compatible with the PlayStation 5?

Yes, the 1 TB Ultima Pro X3 fits the PS5's M.2 expansion bay as a single-sided M.2 2280 module and meets the PCIe 4.0 x4 interface requirement. The PS5's built-in benchmark should report sequential read speeds in the 4,800–5,100 MB/s range, comfortably above Sony's 5,500 MB/s advisory recommendation. The 1 TB capacity provides a good balance for PS5 use, leaving approximately 840 GB for games after the system software reservation — enough for 8–12 large AAA titles. The drive ships without a heatsink, and the PS5's enclosed M.2 bay benefits from additional cooling, so an inexpensive low-profile third-party PS5-compatible heatsink is a recommended addition to prevent thermal throttling during sustained game downloads and installations.

### Who is Integral Memory and where can I buy their SSDs?

Integral Memory plc is a UK-based flash memory and storage manufacturer founded in 1989 and headquartered in London. The company produces USB drives, SD and microSD cards, and SSDs under the Integral brand. Integral SSDs are primarily sold through UK retailers including Amazon UK, Ebuyer, Scan, CCL Computers, and Box.co.uk, with additional distribution through European retail channels. Availability in North America, Asia, and other regions outside Europe is limited. Integral's warranty support and customer service are based in the UK. International buyers should verify the warranty claim process, including any shipping and handling costs for RMA returns, with their retailer before purchasing.

### Is the 1TB Ultima Pro X3 a good choice for a boot drive?

Yes, the 1 TB Ultima Pro X3 works well as a system boot drive. The 5,000 MB/s sequential read speed and competitive random 4K performance provide fast OS boots, quick application launches, and smooth multitasking. The 1 TB capacity is the practical minimum for a combined OS-and-applications-and-games drive, providing enough room for Windows or Linux, a full productivity suite, creative applications, and a rotating selection of games without constant storage management. The 3-year warranty provides reasonable coverage for a boot drive, and the typical write load of an OS volume is modest enough that endurance is unlikely to be a concern within the warranty period. For users with large game libraries or media collections exceeding 1 TB, a secondary storage drive is recommended alongside the Ultima Pro X3.

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Last updated: 2026-05-23. Source: https://ssdrive.net/integral-ultima-pro-x3-1-tb