Everything that decides whether the Silicon Power UD90 is the right drive: controller, DRAM, NAND, rated endurance, PS5 and laptop fit, and how it compares with the obvious alternatives. Hardware facts are taken from the reviews and datasheets listed at the bottom; capacities and speeds come from our comparison of 60 drives.
Who it’s for: The lowest-cost tier of Gen 4 storage, especially at 4TB, for games and bulk files. Skip it for: Buyers who need to know what NAND they get: Silicon Power changed the UD90 from TLC to QLC between batches.
| Controller | Phison E21T |
| DRAM cache | No — DRAM-less, uses host memory (HMB) |
| NAND | Micron 176-layer — TLC in early batches, QLC in later ones |
| Interface | PCIe 4.0 x4, NVMe, M.2 2280 |
| Heatsink version | Not in our data — sold bare |
| Capacity | Seq. read | Seq. write | Endurance | Warranty |
|---|---|---|---|---|
| 1 TB | 4,800 MB/s | 4,200 MB/s | — | 5 yr |
| 2 TB | 5,000 MB/s | 4,800 MB/s | 1,200 TBW | 5 yr |
| 4 TB | 5,000 MB/s | 4,500 MB/s | 2,400 TBW | 5 yr |
Rated endurance is 1,200 TBW at 2TB, 2,400 TBW at 4TB. Speeds are the manufacturer’s sequential ratings.
Every Silicon Power UD90 capacity in our comparison, smallest first.
| $/TB | $/GB | Price | Capacity | Interface | Gen | Read | Write | NAND | Warranty | Cond. | Product |
|---|---|---|---|---|---|---|---|---|---|---|---|
| $165.97BEST | $0.166 | $165.97 | 1 TB | M.2 NVMe | Gen 4 | 4,800 MB/s | 4,200 MB/s | QLC | 5 yr | New | Silicon Power UD90 1TB· 3rd-partyAmazon ↗ |
| $144.99 | $0.145 | $289.97 | 2 TB | M.2 NVMe | Gen 4 | 5,000 MB/s | 4,800 MB/s | QLC | 5 yr | New | Silicon Power UD90 2TB· 3rd-partyAmazon ↗ |
| $118.74 | $0.119 | $474.97 | 4 TB | M.2 NVMe | Gen 4 | 5,000 MB/s | 4,500 MB/s | QLC | 5 yr | New | Silicon Power UD90 4TB· 3rd-partyAmazon ↗ |
Full list of qualifying drives: PS5-compatible SSDs.
Kingston NV3: another DRAM-less budget Gen 4 drive.
| Silicon Power UD90 | Kingston NV3 | |
|---|---|---|
| Interface | PCIe Gen 4 | PCIe Gen 4 |
| Seq. read | 5,000 MB/s | 6,000 MB/s |
| Seq. write | 4,800 MB/s | 5,000 MB/s |
| NAND | QLC | QLC |
| DRAM cache | No (HMB) | No (HMB) |
| Warranty | 5 yr | 3 yr |
Crucial P310: DRAM-less QLC with a five-year warranty from a NAND maker.
| Silicon Power UD90 | Crucial P310 | |
|---|---|---|
| Interface | PCIe Gen 4 | PCIe Gen 4 |
| Seq. read | 5,000 MB/s | 7,100 MB/s |
| Seq. write | 4,800 MB/s | 6,000 MB/s |
| NAND | QLC | QLC |
| DRAM cache | No (HMB) | No (HMB) |
| Warranty | 5 yr | 5 yr |
We show retail prices only while we can refresh them at least every 24 hours. For market context: TrendForce’s 16 Oct 2026 retail sample runs $133–$250 per TB for mainstream 1–2TB drives, and NAND contract prices are forecast +15 to +20% for 4Q26. Check any listing against that range with the price per TB calculator, and see the SSD price chart for the trend.
Hardware facts on this page come from:
Where reviews disagreed (for example on NAND layer counts or a capacity’s endurance rating) we state only what the sources agree on.