# Integral Ultima Pro X 4TB Review — the Rare Gen3 Flagship (2026)

The Integral Ultima Pro X 4TB was Integral's Gen3 flagship — full 3,400/3,000 MB/s speeds, the family's highest random-read rating, and 6,070 TBW of endurance.

Quick answer: The Integral Ultima Pro X 4TB is the capacity for Gen3-era owners who need bulk storage without abandoning an older board — media workstations, archive drives, and multi-game libraries fit its 3,400/3,000 MB/s ratings and enormous 6,070 TBW budget. Skip it on any PCIe 4.0-capable system: a WD Black SN850X 4TB or Samsung 990 Pro 4TB doubles the interface speed and is far easier to buy. Sabrent's Rocket 4TB remains the closest Gen3 rival, with a 5-year warranty offsetting its own scarcity. The catch is availability — this is a legacy drive that surfaces mainly in distributor listings, and the high 7.5 W power draw asks for a ventilated slot. When found at the right discount, it remains a uniquely documented 4 TB Gen3 option.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 4 TB |
| Interface | M.2 3.0 x 4 |
| Controller | Phison PS5012-E12 8 Channel |
| Memory type | 3D TLC |
| DRAM cache | Yes |
| Sequential read | 3400 MB/s |
| Sequential write | 3000 MB/s |
| Random read IOPS | 570000 |
| Random write IOPS | 650000 |
| Endurance | 6070 TBW |
| MTBF | 1800000 |
| Warranty | 3 years |

## Performance

The 4TB carries the ratings every other UltimaPro X Version 2 capacity is measured against: 3,400 MB/s sequential reads, 3,000 MB/s writes, 570K random reads, and 650K random writes. Integral's product-page footnote states that its advertised performance is the 4TB model's, which makes this the reference capacity of the family. In practice the numbers translate to near-SATA-eliminating behavior: multi-hundred-gigabyte game and footage transfers complete in minutes rather than tens of minutes against a 550 MB/s SATA ceiling, and the 570K random-read rating keeps large media libraries responsive.

The endurance-to-speed combination is the real story. A 6,070 TBW budget means roughly 500 GB of writes per day for 33 years — far beyond the 3-year warranty term. Sustained-write behavior follows the usual E12 pattern: a pseudo-SLC cache absorbs bursts, then throughput settles to native TLC rates, and at 4 TB the cache is generous enough that only extreme copy jobs see the transition. Two cautions: the drive draws up to 7.5 W reading and 6.8 W writing, the highest in the family, so give it airflow; and no independent 4TB benchmark coverage is known, with only Integral's datasheet behind these figures.

## Endurance, TBW & Warranty

Integral covers the 4TB with the family's 3-year limited warranty or the TBW rating, whichever arrives first — and here the rating is the standout: 6,070 TBW, the largest budget in the UltimaPro X Version 2 datasheet. At 500 GB of writes per day, an extremely heavy workload, the drive would last about 33 years; at 50 GB per day, well past three centuries. Either way the 3-year term, not the NAND, is the practical limit. MTBF is listed at 1.8 million hours — a population statistic from JEDEC-methodology testing, not a per-unit lifespan promise. Integral publishes this endurance figure openly for every capacity in the range, which remains rarer than it should be among Gen3-era brands; claims are handled through Integral's UK support with proof of purchase.

## Pros and Cons

**Pros:**

- 3,400 MB/s reads and 3,000 MB/s writes
- 6,070 TBW endurance rating
- 570K random-read IOPS, the family's highest
- TCG Opal 2.0 AES-256 hardware encryption
- Largest capacity in the UltimaPro X range
**Cons:**

- 3-year warranty, shorter than Gen3 rivals
- Up to 7.5 W draw needs airflow
- No heatsink included
- Double-sided PCB inside a 3.8 mm height
- Barely available at retail now


## Verdict

The Integral Ultima Pro X 4TB is the capacity for Gen3-era owners who need bulk storage without abandoning an older board — media workstations, archive drives, and multi-game libraries fit its 3,400/3,000 MB/s ratings and enormous 6,070 TBW budget. Skip it on any PCIe 4.0-capable system: a WD Black SN850X 4TB or Samsung 990 Pro 4TB doubles the interface speed and is far easier to buy. Sabrent's Rocket 4TB remains the closest Gen3 rival, with a 5-year warranty offsetting its own scarcity. The catch is availability — this is a legacy drive that surfaces mainly in distributor listings, and the high 7.5 W power draw asks for a ventilated slot. When found at the right discount, it remains a uniquely documented 4 TB Gen3 option.

## Frequently Asked Questions

### Is the Integral Ultima Pro X 4TB compatible with the PS5?

It will work, but it misses Sony's published recommendations. The drive sits comfortably within the console's dimensional limits at 80 x 22 x 3.8 mm, and 4 TB falls inside Sony's supported capacity range. However, Sony recommends 5,500 MB/s sequential reads while the UltimaPro X 4TB is rated at 3,400 MB/s on a PCIe 3.0 interface, and it ships without the heatsink Sony requires — you would need to add one to stay under the 11.25 mm height cap. A PCIe 4.0 drive meeting the 5,500 MB/s guidance is the better-matched PS5 upgrade; this drive suits PS5 owners only when found cheap and paired with a heatsink.

### What is the TBW endurance of the Integral Ultima Pro X 4TB?

Integral's datasheet rates the 4TB (part code INSSD4TM280NUPX2, 4096 GB) at 6,070 TBW under the 3-year-or-TBW warranty, whichever arrives first. That is the largest endurance budget in the UltimaPro X Version 2 family and an enormous figure in absolute terms: at 500 GB of writes per day it covers about 33 years, and the 3-year warranty term expires long before the NAND does for nearly any workload. For comparison, the 2TB sibling is rated at 1,550 TBW, so the 4TB carries almost four times the budget in twice the capacity.

### Is the Integral Ultima Pro X 4TB good for video editing?

On a PCIe 3.0 workstation, yes — with a caveat about heat. The 3,000 MB/s write rating and the family's largest pseudo-SLC cache make it a competent scratch-disk and project-media drive for 4K timelines, and 4 TB holds a serious amount of footage before archiving. The 570K random-read rating keeps proxy workflows responsive. The caveat: Integral rates this capacity at up to 7.5 W reading and 6.8 W writing, the highest draw in the family, so a ventilated M.2 slot or a heatsink is advisable during long render and export sessions. Editors on PCIe 4.0 boards should look at Gen4 drives instead.

### Does the Integral Ultima Pro X 4TB have a DRAM cache?

Yes. The whole UltimaPro X Version 2 family runs Phison's E12 controller, a DRAM-equipped design, and Integral's datasheet lists the platform with DRAM backing. The on-board DRAM holds the flash translation tables so random performance stays consistent as the 4 TB fills with data, and the drive does not depend on the Host Memory Buffer technique that DRAM-less controllers use. On a 4 TB capacity the DRAM matters more than usual, because translation tables for that much flash are large — a DRAM-less 4 TB drive would feel noticeably less consistent under heavy random workloads.

### Why is the Integral Ultima Pro X 4TB hard to find?

It was always a niche part, and it is now a legacy one. Four-terabyte Gen3 TLC drives were rare when the UltimaPro X Version 2 launched because most manufacturers reserved 4 TB for later PCIe 4.0 generations, and Integral's retail push centred on the 240-960 GB capacities. The 4TB part code (INSSD4TM280NUPX2, EAN 5055288446137) is documented in Integral's official datasheet and lives on in distributor feeds such as ICEcat, but stocked retail listings have largely vanished. If you need 4 TB today, the realistic alternatives are a Gen4 drive like the WD Black SN850X 4TB or a used or remaining-stock Gen3 unit such as this one or Sabrent's Rocket 4TB.

### Does the Integral Ultima Pro X 4TB need a heatsink?

None is included, and unlike its siblings this capacity genuinely benefits from one. Integral rates the 4TB at 7.5 W while reading and 6.8 W while writing — the highest power draw in the Version 2 family — so sustained transfers on this drive produce more heat than the 2TB's 4.9/5.8 W. A motherboard M.2 heatsink or a slim aftermarket cooler is cheap insurance against thermal throttling during long copy jobs, especially in a case with poor airflow or in a slot directly beneath a graphics card. The double-sided 3.8 mm module fits standard M.2 2280 slots and cooler designs without issue.

---

Last updated: 2026-10-01. Source: https://ssdrive.net/integral-memory-ultima-pro-x-4-tb