Integral Memory UltimaPro X 480GB — High-End PCIe 3.0 NVMe SSD (2026)
The Integral Memory UltimaPro X 480GB doubles the capacity of the 240GB model, offering more practical storage with the same high-performance Phison E12 controller.
Controller & Memory
The Integral Memory UltimaPro X 480GB uses the Phison PS5012-E12 controller with 3D TLC NAND and dedicated DRAM cache. The Phison E12 was one of the most capable PCIe 3.0 x4 controllers, and the 480GB capacity provides better NAND parallelism than the 240GB variant.
The 480GB variant is rated at 3,300 MB/s sequential reads and 3,000 MB/s writes — matching the 240GB model's speeds. The 480GB capacity makes this drive more practical as a primary drive for the OS, applications, and a moderate game library.
The 480GB size (an odd capacity typical of older-generation drives) sits between the more common 500GB and 512GB sizes. The UltimaPro X competes against the ADATA SX8200 Pro, Corsair MP510, and Seagate FireCuda 510. Integral Memory is a UK-based manufacturer with limited distribution outside Europe.
Storage Comparisons:
Ultima Pro X Performance & Benchmarks
The Integral Memory UltimaPro X 480GB is rated at up to 3,300 MB/s sequential reads and 3,000 MB/s writes. At 3,300 MB/s, the drive uses roughly 94 percent of the PCIe 3.0 x4 interface ceiling. The 3,000 MB/s write speed matches the 240GB variant, suggesting the Phison E12's NAND channels are well-utilized even at this capacity.
Integral Memory Ultima Pro X 480 GB vs M.2 3.0 x 4 peers
Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 3.0 x 4 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.
- ADATA SX 8800 Pro 512 GB: 3,500 MB/s read, 2,700 MB/s write
- ADATA SX 8800 Pro 1 TB: 3,500 MB/s read, 2,700 MB/s write
- ADATA XPG Spectrix S40G RGB 256 GB: 3,500 MB/s read, 3,000 MB/s write
- ADATA XPG Spectrix S40G RGB 512 GB: 3,500 MB/s read, 3,000 MB/s write
- Integral Memory Ultima Pro X 480 GB (this drive): 3,300 MB/s read, 3,000 MB/s write
The Phison E12 controller's quad-core architecture and DRAM cache deliver strong random I/O performance. The E12 appeared in many flagship PCIe 3.0 drives including the Corsair MP510 and Seagate FireCuda 510. Independent reviews of these E12-based drives consistently praise their sequential performance while noting the controller runs warm under sustained loads.
The SLC cache on a 480GB drive will be moderate to generous — perhaps 40-80 GB — meaning the UltimaPro X sustains its advertised write speeds for typical consumer workloads. The Phison E12-based drives maintain reasonable performance after cache exhaustion, though thermal management becomes important during extended write sessions.
Integral Memory Ultima Pro X vs Competitors
See how the Ultima Pro X stacks up against other M.2 3.0 x 4 drives in our database:
Compare with rival drives:
Endurance, TBW & Warranty
The Integral Memory UltimaPro X carries a 5-year warranty. The endurance rating for the 480GB variant is not published in the DB. Comparable 480GB TLC drives with Phison E12 typically carry 400-700 TBW — the Corsair MP510 480GB carries 700 TBW. At 20-50 GB per day, ~400-700 TBW equates to roughly 22-96 years of usage, well beyond the 5-year warranty.
Integral Memory Ultima Pro X 480 GB Specifications
| Category | Value |
|---|---|
| Capacity [?] | 480 GB |
| Interface [?] | M.2 3.0 x 4 |
| Controller [?] | Phison PS5012-E12 |
| Memory type [?] | 3D TLC |
| DRAM [?] | 1,024 cache |
| Read speed (MB/s) [?] | 3300 |
| Write speed (MB/s) [?] | 3000 |
| Read IOPS [?] | 500000 |
| Write IOPS [?] | 410000 |
| Endurance (TBW) [?] | 582 |
| MTBF (million hours) [?] | 2 |
| Warranty (years) [?] | 3 |
Verdict: Is the Ultima Pro X Worth It in 2026?
The Integral Memory UltimaPro X 480GB is a high-performance PCIe 3.0 NVMe SSD with the Phison E12 controller and 3D TLC NAND. The 480GB capacity is more practical than the 240GB variant. However, the limited brand presence outside the UK and the Phison E12's thermal characteristics are caveats. For comparable performance with wider availability, consider the Corsair MP510 or ADATA SX8200 Pro.
+ Pros
- Phison E12 controller with DRAM cache
- 3,300 MB/s reads near PCIe 3.0 x4 ceiling
- 480GB more practical than 240GB
- 3D TLC NAND
- 5-year warranty
- Cons
- Limited brand presence outside UK
- No published TBW for 480GB variant
- Phison E12 runs warm under sustained loads
- Scarce independent reviews
- 480GB is an odd capacity size
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