# Silicon Power US70 1TB PCIe 4.0 NVMe SSD Review (2026)

The Silicon Power US70 1TB is a PCIe 4.0 NVMe SSD built on the Phison E16 platform with Toshiba 96-layer BiCS4 TLC NAND, delivering 5,000 MB/s reads and 1,800 TBW endurance at a competitive price point.

Quick answer: The Silicon Power US70 1TB delivers the same Phison E16 performance as more expensive Gen4 drives at a lower price, making it one of the better value propositions in first-generation PCIe 4.0 storage. The 5,000 MB/s reads, 1,800 TBW endurance, and included DRAM cache are the right specs for AMD X570 and B550 builders who want Gen4 speed without paying the Phison E18 or Samsung Elpis premium. The downside is that Phison E16 performance is now a generation behind — drives like the Samsung 980 Pro and WD Black SN850 push past 7,000 MB/s. Buyers who prioritize peak throughput should skip the US70 and invest in a newer controller. For price-conscious Gen4 adopters, the US70 is a practical choice.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 1 TB |
| Interface | M.2 4.0 x 4 |
| Controller | Phison PS5016-E16 |
| Memory type | Toshiba 3D TLC |
| DRAM cache | SLC Caching DRAM Cache |
| Sequential read | 5000 MB/s |
| Sequential write | 4400 MB/s |
| Random read IOPS | 750000 |
| Random write IOPS | 750000 |
| Endurance | 1800 TBW |
| MTBF | 1.7 |
| Warranty | 5 years |

## Performance

The Silicon Power US70 1TB is rated for 5,000 MB/s sequential reads and 4,400 MB/s sequential writes. Independent reviewers find the drive hits these numbers in synthetic benchmarks like CrystalDiskMark, with real-world sequential writes typically landing within 5 percent of the rated ceiling. Random performance is rated at 750K read IOPS and 700K write IOPS at queue depth 32.

The dynamic SLC cache absorbs burst writes at full speed. Once the cache fills — generally after 100–150 GB of sustained writing on the 1TB model — write throughput drops to native TLC levels around 1,500–2,000 MB/s. For typical desktop workloads dominated by reads and short writes, this cache behavior is invisible. The drive performs comparably to other Phison E16-based SSDs like the Seagate FireCuda 520 1TB and Corsair MP600 1TB, since they share identical hardware. The practical bottleneck for gaming is game engine asset streaming, not SSD throughput, so the US70 provides ample headroom for current titles.

## Endurance, TBW & Warranty

Silicon Power rates the US70 1TB at 1,800 TBW with a five-year limited warranty. At a typical consumer write workload of 30 GB per day, the endurance budget covers roughly 164 years — well beyond the warranty period. The drive carries a 1.7 million hour MTBF rating, a population-level reliability estimate. Silicon Power provides a basic SSD toolbox for health monitoring. Warranty service is handled through the retailer or Silicon Power's direct RMA process, though some regions have limited service center coverage compared to larger brands like Seagate or Samsung.

## Pros and Cons

**Pros:**

- 5,000 MB/s reads and 4,400 MB/s writes on PCIe 4.0
- 1,800 TBW endurance with 5-year warranty
- Typically priced below competing Phison E16 drives
- Toshiba 96-layer TLC with DDR4 DRAM cache
- Backward compatible with PCIe 3.0 slots
**Cons:**

- First-gen Gen4 — surpassed by Phison E18 drives at 7,000+ MB/s
- No included heatsink
- Double-sided PCB may limit slim-laptop compatibility
- Generic branding and packaging
- Requires PCIe 4.0 platform for rated throughput


## Verdict

The Silicon Power US70 1TB delivers the same Phison E16 performance as more expensive Gen4 drives at a lower price, making it one of the better value propositions in first-generation PCIe 4.0 storage. The 5,000 MB/s reads, 1,800 TBW endurance, and included DRAM cache are the right specs for AMD X570 and B550 builders who want Gen4 speed without paying the Phison E18 or Samsung Elpis premium. The downside is that Phison E16 performance is now a generation behind — drives like the Samsung 980 Pro and WD Black SN850 push past 7,000 MB/s. Buyers who prioritize peak throughput should skip the US70 and invest in a newer controller. For price-conscious Gen4 adopters, the US70 is a practical choice.

## Frequently Asked Questions

### Is the Silicon Power US70 1TB good for gaming?

The US70 1TB delivers 5,000 MB/s sequential reads and 750K random read IOPS, providing excellent gaming performance on PCIe 4.0 platforms. Game load times are essentially identical to other Phison E16 drives like the Corsair MP600 and Seagate FireCuda 520. The 1TB capacity holds 15–25 modern AAA titles, making it a practical game library drive. For gaming, the US70 offers the same experience as pricier Gen4 alternatives that share the same controller.

### Is the Silicon Power US70 compatible with the PS5?

The US70 uses PCIe 4.0 NVMe in an M.2 2280 form factor, meeting the PS5's interface and form factor requirements. However, its 5,000 MB/s read speed falls below Sony's recommended 5,500 MB/s for PS5 expansion storage. The drive will physically fit and function in the PS5 M.2 slot, but Sony advises drives with higher read speeds for optimal performance. Consider a drive rated at 7,000 MB/s reads for the best PS5 experience.

### Does the Silicon Power US70 have a DRAM cache?

Yes. The US70 includes a 1 GB DDR4 DRAM cache on the 1TB model that serves the Phison E16 controller's flash translation layer. DRAM cache helps maintain consistent random write performance under mixed workloads and is preferable to DRAM-less designs that rely on Host Memory Buffer for mapping tables.

### What is the TBW endurance of the Silicon Power US70 1TB?

The US70 1TB is rated at 1,800 TBW (terabytes written), covered by a five-year limited warranty. At a typical consumer workload of 30–50 GB per day, the endurance budget lasts 98 to 164 years. Even at a heavy 100 GB per day, it would take 49 years to exhaust the allowance. For normal desktop use, endurance is not a practical concern within the warranty period.

### How does the US70 compare to the Corsair MP600?

Both drives use the same Phison E16 controller and Toshiba 96-layer TLC NAND, delivering nearly identical performance. The Corsair MP600 ships with a bulky aluminum heatsink, while the US70 has no heatsink. The US70 is typically priced lower than the MP600. Under the label, the hardware is functionally the same reference design. The choice comes down to whether the included heatsink matters and which is cheaper at time of purchase.

### Does the Silicon Power US70 need a heatsink?

The US70 does not include a heatsink. The Phison E16 controller generates moderate heat under sustained writes, and thermal throttling can reduce performance during long file transfers. Most modern motherboards include an M.2 heatsink that provides sufficient cooling for typical desktop use. For sustained write workloads, a third-party M.2 heatsink is a worthwhile addition.

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Last updated: 2026-05-17. Source: https://ssdrive.net/silicon-power-us70-1-tb