Silicon Power UD90 1TB
Score: 80/100
Sabrent Rocket 4 2TB
Score: 74/100Rankings
The Silicon Power UD90 1TB PCIe 4.0 SSD delivers flagship-class sequential speeds at a budget price, but its DRAM-less design and lack of a heatsink lead to thermal concerns and mixed reliability reports.
The Sabrent Rocket 4 2TB is a high-performance PCIe 4.0 internal SSD offering excellent read/write speeds and IOPS, with a lightweight M.2 2280 form factor, but it lacks a bundled heatsink and has moderate endurance.
| Attribute | | |
|---|---|---|
1,000 GB | 2,000 GBbest | |
5,000 MB/s | 7,450 MB/sbest | |
4,800 MB/s | 6,400 MB/sbest | |
570,000 IOPS | 1,000,000 IOPSbest | |
600,000 IOPS | 950,000 IOPSbest | |
600 TBWbest | 400 TBW | |
5 yearsbest | 2 years | |
1,500,000 hours | 1,800,000 hoursbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(5) | ||
Sequential Read Speed (MB/s) | 5000 MB/s | 7450 MB/s |
Sequential Write Speed (MB/s) | 4800 MB/s | 6400 MB/s |
Random Read IOPS (IOPS) | 570000 IOPS | 1000000 IOPS |
Random Write IOPS (IOPS) | 600000 IOPS | 950000 IOPS |
DRAM Cache (Yes/No) | false | true |
Storage(4) | ||
Capacity (GB) | 1000 GB | 2000 GB |
Endurance (TBW) (TBW) | 600 TBW | 400 TBW |
Warranty Period (years) | 5 years | 2 years |
MTBF (hours) | 1500000 hours | 1800000 hours |
Design & Build(1) | ||
Thickness (mm) | 3.5 mm | 2 mm |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praise the UD90 as a value champion with strong sequential performance, but caution about heat and the absence of an included heatsink.
Everyday users love the fast boot and gaming responsiveness, yet many complain about overheating, premature failures, and occasional data corruption.
“"new Value Champion" - Tom's Hardware”
“"great deal" for 1TB of PCIe 4.0 storage”
“"sudden drive death within months"”
Professional reviewers note that the Rocket's TLC NAND and DRAM give it reliable, sustained performance, and the implied Phison E16 controller is a solid choice for PCIe 4.0 workloads. While it doesn't match the raw speed of flagship drives like the Samsung 980 Pro, its price-to-performance ratio makes it a compelling option for gamers and creators.
Everyday users consistently praise the Rocket for its speed, affordability, and ease of installation, often highlighting fast boot times, quick game loads, and the usefulness of the bundled cloning software. Common complaints revolve around the missing mounting screw, lack of an included heatsink, and a few isolated early-failure reports.
