Silicon Power US70 2TB PCIe 4.0 NVMe SSD Review (2026)
The Silicon Power US70 2TB is the range-topping capacity of this Phison E16-based PCIe 4.0 NVMe line, offering 5,000 MB/s reads, 4,400 MB/s writes, and 3,600 TBW endurance for users who need bulk Gen4 storage.
Controller & Memory
The US70 2TB uses the Phison PS5016-E16 eight-channel controller, Toshiba BiCS4 96-layer 3D TLC NAND, and a 2 GB DDR4 DRAM cache. Sequential read and write speeds match the 1TB model at 5,000 MB/s and 4,400 MB/s respectively, while endurance doubles to 3,600 TBW — one of the higher TBW figures in the first-gen PCIe 4.0 class.
The 2TB capacity targets content creators, gamers with extensive libraries, and anyone building a single-drive system on a PCIe 4.0 platform. At 2TB, the US70 competes with the Corsair MP600 2TB, Sabrent Rocket NVMe 4.0 2TB, and the Seagate FireCuda 520 2TB — all of which share the same Phison E16 reference design. Silicon Power's advantage is price: the US70 consistently sells for less than those competitors.
The drive is double-sided with NAND on both faces of the M.2 2280 PCB. No heatsink is included. Full speed requires a PCIe 4.0-capable platform (AMD X570, B550, or Intel 11th Gen and newer). In a PCIe 3.0 slot, expect roughly 3,400 MB/s reads — still fast, but half the Gen4 ceiling.
Storage Comparisons:
US70 Performance & Benchmarks
The US70 2TB is rated for 5,000 MB/s sequential reads and 4,400 MB/s sequential writes, with 750K random read IOPS and 700K random write IOPS. The 2TB model's larger SLC cache absorbs more data before throttling — typically 200–300 GB of sustained writing before write speeds drop to native TLC rates around 1,500–2,000 MB/s.
Silicon Power US70 2 TB vs M.2 4.0 x 4 peers
Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 4.0 x 4 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.
- Patriot Viper PV593 1 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV593 2 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV593 4 TB: 14,500 MB/s read, 14,000 MB/s write
- Patriot Viper PV573 2 TB: 14,000 MB/s read, 12,000 MB/s write
- Silicon Power US70 2 TB (this drive): 5,000 MB/s read, 4,400 MB/s write
With more NAND die available for parallel operations, the 2TB model sustains higher throughput under mixed read/write workloads compared to smaller capacities. Independent reviewers find real-world performance essentially identical to other Phison E16 drives at the same capacity. Gaming load times, application launches, and file transfers are all consistent with the Phison E16 platform's capabilities. The practical limitation for gaming is game engine design, not SSD throughput — the US70 2TB provides substantial headroom beyond what current games demand.
Silicon Power US70 vs Competitors
See how the US70 stacks up against other M.2 4.0 x 4 drives in our database:
Compare with rival drives:
Endurance, TBW & Warranty
Silicon Power rates the US70 2TB at 3,600 TBW with a five-year limited warranty. At 50 GB of writes per day, the endurance budget covers roughly 197 years. Even at an extreme 200 GB per day, the 3,600 TBW allowance lasts 49 years. The drive carries a 1.7 million hour MTBF rating. Silicon Power's SSD toolbox provides health monitoring and secure erase functions. Warranty claims are processed through the retailer or Silicon Power's RMA portal. The five-year coverage matches the industry standard for this tier.
Silicon Power US70 2 TB Specifications
| Category | Value |
|---|---|
| Capacity [?] | 2 TB |
| Interface [?] | M.2 4.0 x 4 |
| Controller [?] | Phison PS5016-E16 |
| Memory type [?] | Toshiba 3D TLC |
| DRAM [?] | SLC Caching DRAM Cache |
| Read speed (MB/s) [?] | 5000 |
| Write speed (MB/s) [?] | 4400 |
| Read IOPS [?] | 750000 |
| Write IOPS [?] | 750000 |
| Endurance (TBW) [?] | 3600 |
| MTBF (million hours) [?] | 1.7 |
| Warranty (years) [?] | 5 |
Verdict: Is the US70 Worth It in 2026?
The Silicon Power US70 2TB is a straightforward value play in PCIe 4.0 storage: same Phison E16 hardware as the competition, same 5,000/4,400 MB/s performance, same 3,600 TBW endurance, but typically at a lower price. It is the right drive for AMD X570 or B550 builders who want maximum capacity on a Gen4 M.2 slot without overspending on a brand premium. The limitation is shared with all Phison E16 drives — second-gen Gen4 controllers deliver 7,000+ MB/s, making the US70 a tier behind the current performance ceiling. Buyers who need cutting-edge speed should step up to a Phison E18 or WD Black SN850. For capacity-focused value, the US70 2TB is difficult to beat.
+ Pros
- 5,000 MB/s reads and 4,400 MB/s writes on PCIe 4.0
- 3,600 TBW endurance — generous for the price
- 2TB capacity for large game libraries or video projects
- Toshiba 96-layer TLC with DDR4 DRAM cache
- Consistently priced below competing Phison E16 drives
- Cons
- First-gen Gen4 — surpassed by 7,000+ MB/s second-gen drives
- No included heatsink
- Double-sided PCB limits thin-laptop compatibility
- Generic branding and minimal bundled software
- Requires PCIe 4.0 platform for rated throughput
Buy this or similar SSD Storage:
Video Review
Silicon Power US70 UD70 A80 A60 Round-Up | Gen3 vs Gen4 | Incredible Temperature Results !
