SK Hynix Gold P31 1TB Review (2026)
The SK Hynix Gold P31 1TB is notable as the first consumer SSD to use 128-layer NAND, delivering excellent performance with industry-leading power efficiency.
Controller & Memory
SK Hynix (now Solidigm) designed the Gold P31 as a showcase for its in-house NAND and controller technology. The 1TB model uses SK Hynix 128-layer 3D TLC NAND paired with a proprietary SK Hynix controller and LPDDR4-4266 DRAM cache. This fully vertically integrated design means every component comes from SK Hynix rather than being assembled from third-party parts.
The 1TB model is rated at 3,500 MB/s sequential reads and 3,200 MB/s writes with 570,000/600,000 IOPS random performance. These speeds place it at the top of the PCIe 3.0 tier alongside the Samsung 970 EVO Plus and WD Black SN750. What sets the Gold P31 apart is its power efficiency: it consistently draws less power than competitors, making it one of the best NVMe drives for laptop battery life.
The drive carries a 750 TBW endurance rating with a 5-year warranty. The M.2 2280 single-sided form factor fits any laptop or desktop with an NVMe slot. SK Hynix also provides a basic SSD management utility for firmware updates and health monitoring.
Storage Comparisons:
Gold P31 Performance & Benchmarks
The SK Hynix Gold P31 1TB is rated at 3,500 MB/s sequential reads and 3,200 MB/s sequential writes. These speeds are near the PCIe 3.0 x4 ceiling and competitive with the Samsung 970 EVO Plus 1TB (3,500/3,300 MB/s) and WD Black SN750 1TB (3,470/3,000 MB/s). Random performance reaches 570,000 IOPS reads and 600,000 IOPS writes, strong numbers enabled by the 128-layer TLC NAND and LPDDR4 DRAM cache.
SK Hynix Gold P31 1 TB 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
- SK Hynix Gold P31 1 TB (this drive): 3,100 MB/s read, 3,200 MB/s write
The Gold P31 has a standout characteristic: power efficiency. Independent reviews at AnandTech, PCWorld, and Tom Hardware consistently measured lower power draw than competing drives. Under load, the Gold P31 consumes roughly 3-4 watts versus 5-7 watts for the Samsung 970 EVO Plus. This translates to measurably longer battery life in laptops, which is the Gold P31 primary differentiator.
In real-world use, the Gold P31 1TB delivers fast boot times, game loading, and file transfers. The SLC cache is generous at this capacity, typically handling 20-40 GB of burst writes before transitioning to native TLC speeds around 1,500-2,000 MB/s. Independent benchmarks showed the Gold P31 matching or slightly exceeding its rated specifications, which is uncommon for SSDs. The drive performs consistently across mixed workloads without the performance dips that affect some competitors.
SK Hynix Gold P31 vs Competitors
See how the Gold P31 stacks up against other M.2 3.0 x 4 drives in our database:
Compare with rival drives:
Endurance, TBW & Warranty
SK Hynix backs the Gold P31 with a 5-year warranty. The 1TB model is rated at 750 TBW endurance. In practical terms, writing 50 GB per day would take over 41 years to reach 750 TBW. Even power users writing 100 GB daily would need roughly 20 years.
The 5-year warranty matches the industry standard for premium consumer NVMe drives. SK Hynix handles warranty through its regional service centers. The drive includes S.M.A.R.T. monitoring and a basic management utility. The 128-layer NAND architecture provides a solid endurance foundation, and the efficient controller design generates less heat, which contributes to long-term reliability.
SK Hynix Gold P31 1 TB Specifications
| Category | Value |
|---|---|
| Capacity [?] | 1 TB |
| Interface [?] | M.2 3.0 x 4 |
| Controller [?] | SK Hynix |
| Memory type [?] | SK Hynix 128L 3D TLC |
| DRAM [?] | SK Hynix LPDDR4-4266 |
| Read speed (MB/s) [?] | 3100 |
| Write speed (MB/s) [?] | 3200 |
| Read IOPS [?] | 570000 |
| Write IOPS [?] | 600000 |
| Endurance (TBW) [?] | 750 |
| MTBF (million hours) [?] | 1.5 |
| Warranty (years) [?] | 5 |
Verdict: Is the Gold P31 Worth It in 2026?
The SK Hynix Gold P31 1TB is one of the best PCIe 3.0 NVMe drives available, combining top-tier performance with industry-leading power efficiency. The fully in-house design with 128-layer NAND delivers consistent real-world results. Buy it for a laptop where battery life matters, or for any system where you want proven Gen3 performance without the Samsung price premium.
Skip it if your system supports PCIe 4.0 and you want more headroom. Also consider that SK Hynix has rebranded its consumer SSD business as Solidigm, which may affect long-term support perception. The Gold P31 1TB is an outstanding choice for PCIe 3.0 systems and one of the few drives that genuinely excels at power efficiency.
+ Pros
- 3,500/3,200 MB/s at the PCIe 3.0 ceiling
- Best-in-class power efficiency — ideal for laptops
- First 128-layer TLC NAND in consumer SSDs
- Fully in-house design with LPDDR4 DRAM cache
- 750 TBW endurance with 5-year warranty
- Cons
- PCIe 3.0 limited — no Gen4 future-proofing
- SK Hynix consumer SSD brand now Solidigm
- Basic SSD management software
- Less retail availability than Samsung or WD
Buy this or similar SSD Storage:
Video Review
SK Hynix Gold P31 NVMe SSD: More Hyjinx from Hynix?
