GOODRAM IRDM Pro Gen 5 4TB PCIe 5.0 NVMe Review (2026)
The GOODRAM IRDM Pro Gen 5 4 TB is the top capacity of Wilk Elektronik's flagship PCIe 5.0 line, combining 12,000 MB/s reads with a 3,000 TBW endurance rating and a 5-year warranty.
Controller & Memory
The 4 TB IRDM Pro Gen 5 is the largest of three capacities GOODRAM ships on this platform (1 TB, 2 TB, 4 TB) and it is the one aimed squarely at content creators, game-library hoarders, and anyone who wants a single Gen5 drive that can serve as both boot volume and working storage for years. Inside is the now-familiar Gen5 recipe: Phison's PS5026-E26 controller, an eight-channel 5-core part built on TSMC's 12 nm process, paired with Micron B58R 232-layer TLC running at 2,400 MT/s. A 4 GB LPDDR4 DRAM buffer holds the flash translation layer, and a pseudo-SLC write cache absorbs short bursts before flushing to native TLC. GOODRAM ships the stick double-sided in the M.2 2280 form factor with its Graphreeze graphene coating in place of a metal heatsink.
Capacity-specific, the 4 TB variant is rated for the same headline numbers as the 2 TB: 12,000 MB/s sequential read, 11,000 MB/s sequential write, up to 1,400,000 random read IOPS and 1,400,000 random write IOPS. Where the 4 TB pulls ahead is endurance and sustained-write headroom. GOODRAM rates the 4 TB at 3,000 TBW, more than double the 1,400 TBW of the 2 TB and more than four times the 700 TBW of the 1 TB, reflecting the underlying Micron TLC's 3,000 P/E-cycle rating multiplied across more dies. The larger die count also helps sustained writes hold closer to the burst figure once the SLC cache fills.
The buyer profile is a PCIe 5.0-capable desktop owner (AMD 600-series or Intel 700-series onward) running a large game library, a 4K or 8K video-editing scratch disk, or a working dataset that justifies a single high-capacity Gen5 part over a smaller boot SSD plus bulk SATA storage. Double-sided PCB rules out some single-sided-only laptop slots and tight PS5 installations, though the drive meets Sony's read-speed requirement comfortably. No metal heatsink ships in the box; budget for the motherboard's integrated M.2 cooler or a third-party Gen5 heatsink, since the graphene layer alone cannot keep an E26 controller at peak under sustained load. Direct rivals at this capacity include the Crucial T705 4TB, the Sabrent Rocket 5 2TB family, and the Corsair MP700 PRO family; on PCIe 4.0 for value-led buyers the Samsung 990 Pro 2TB remains the reference point.
Storage Comparisons:
IRDM Pro Gen 5 Performance & Benchmarks
On the 4 TB capacity GOODRAM rates the IRDM Pro Gen 5 for 12,000 MB/s sequential read and 11,000 MB/s sequential write over its PCIe 5.0 x4 link, with random performance quoted at up to 1,400,000 read IOPS and 1,400,000 write IOPS. These are the same numbers GOODRAM quotes on the 2 TB and they sit at the practical ceiling for a Phison E26 drive on Micron 232-layer TLC; the 4 TB's advantage over the 2 TB is endurance and sustained-write behaviour rather than headline throughput. In real terms, 12,000 MB/s sequential read is roughly double what the fastest PCIe 4.0 parts deliver, which matters most for moving very large files, capturing multi-stream 4K or 8K video to a scratch disk, and for DirectStorage-enabled games that can stream assets directly to the GPU.
GOODRAM IRDM Pro Gen 5 4 TB vs M.2 5.0 peers
Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 5.0 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.
- Corsair MP700 Pro XT 1 TB: 14,900 MB/s read, 14,200 MB/s write
- Corsair MP700 Pro XT 2 TB: 14,900 MB/s read, 14,500 MB/s write
- Corsair MP700 Pro XT 4 TB: 14,900 MB/s read, 14,400 MB/s write
- Crucial T710 1 TB: 14,900 MB/s read, 13,800 MB/s write
- GOODRAM IRDM Pro Gen 5 4 TB (this drive): 12,000 MB/s read, 11,000 MB/s write
As with every E26 drive, the headline sequential figures are burst numbers measured against the pseudo-SLC cache in a fresh-out-of-box state. Once the cache fills (its size scales with free space and is not published by GOODRAM), writes drop to the native TLC rate; on the 4 TB that native rate is the strongest in the family because there are more NAND dies to interleave, which is the real reason to step up from the 2 TB for write-heavy workflows. Independent reviews of E26 drives on this Micron NAND consistently find the platform hits its rated peak on reads in CrystalDiskMark-style benchmarks, but that real-world game load times and OS responsiveness are nearly indistinguishable from a good PCIe 4.0 drive. The 4 TB's value is in capacity plus sustained behaviour under load, not in measurably faster boot times.
GOODRAM IRDM Pro Gen 5 vs Competitors
See how the IRDM Pro Gen 5 stacks up against other M.2 5.0 drives in our database:
Compare with rival drives:
Endurance, TBW & Warranty
GOODRAM rates the 4 TB IRDM Pro Gen 5 at 3,000 TBW (Terabytes Written) over the lifetime of the drive and backs it with a 5-year limited warranty, whichever comes first. The 3,000 TBW figure scales linearly with capacity across the family (700 TBW on the 1 TB, 1,400 TBW on the 2 TB, 3,000 TBW on the 4 TB) and reflects the 3,000 P/E-cycle endurance rating of the underlying Micron 232-layer TLC. In practical use, 3,000 TBW allows roughly 1.64 TB of writes every single day for the full five-year warranty term, which is well beyond what even a heavy video-editing or database workload generates. A rig writing 500 GB of footage a day would take around 16 years to exhaust the endurance rating, so for the 4 TB capacity the warranty term rather than the TBW is the binding constraint. GOODRAM (Wilk Elektronik SA, based in Poland) services the warranty through its European distribution network; buyers outside the EU should confirm RMA handling with the retailer. The drive's rated MTBF is 1.6 million hours, consistent with other Phison E26 drives on the same Micron NAND.
GOODRAM IRDM Pro Gen 5 4 TB Specifications
| Category | Value |
|---|---|
| Capacity [?] | 4 TB |
| Interface [?] | M.2 5.0 |
| Controller [?] | Phison PS5026-E26 8 Channel |
| Memory type [?] | Micron 232-L |
| DRAM [?] | Yes |
| Read speed (MB/s) [?] | 12000 |
| Write speed (MB/s) [?] | 11000 |
| Read IOPS [?] | 1400000 |
| Write IOPS [?] | 1400000 |
| Endurance (TBW) [?] | 3000 |
| MTBF (million hours) [?] | 1600000 |
| Warranty (years) [?] | 5 |
Verdict: Is the IRDM Pro Gen 5 Worth It in 2026?
The GOODRAM IRDM Pro Gen 5 4 TB is the right pick for a PCIe 5.0-capable desktop owner who wants a single high-capacity drive for OS, game library, and working files without splitting storage across multiple SSDs, and who values the 3,000 TBW endurance rating for years of write-heavy use. Skip it if you are on a PCIe 4.0-only board (the drive runs but you waste the Gen5 premium), if you need a single-sided stick for a laptop or tight PS5 bay, or if your workload is read-mostly and you would not notice the difference from a cheaper 2 TB part. The direct alternative is the Crucial T705 family, which pushes the same E26 platform slightly harder on write speed and ships in a heatsink variant, though the 4 TB Crucial capacity commands a significant price premium. As a maximum-capacity, maximum-endurance Gen5 part with Micron 232-layer TLC and Graphreeze cooling, the IRDM Pro Gen 5 4 TB is the content-creator-leaning top of GOODRAM's lineup.
+ Pros
- 3,000 TBW endurance at 4 TB
- Full 12,000 MB/s read and 11,000 MB/s write
- 1.4M random read and write IOPS
- Phison E26 with 4 GB LPDDR4 DRAM
- Micron 232-layer TLC NAND
- 5-year limited warranty
- Cons
- Premium price per gigabyte at 4 TB
- No metal heatsink included
- Double-sided PCB limits laptop fitment
- Phison E26 runs hot under sustained load
- Write speed drops once SLC cache fills
Buy this or similar SSD Storage:
Video Review
Goodram IRDM PRO GEN 5 SSD NVMe M.2 2280 PCIe Gen5 x4 12000 MB/s specs (1TB, 2TB, 4TB)
