The Silicon Power UD90 1TB wins in 4 out of 6 comparable specs. Its biggest advantage is Sequential Read (757% better).
870 EVO 500GB wins in 2 specs (DRAM Cache: 100% better).
Recommendation
Choose UD90 1TB if you want the best overall performance — especially sequential read.
Choose 870 EVO 500GB if dram cache matters more to you.
| Spec | Samsung870 EVO 500GB | Silicon PowerUD90 1TB |
|---|---|---|
| Storage | ||
| Capacity | 500 GB | 1000 GB+100% |
| Type | SATA SSD | NVMe SSD |
| Interface | SATA 6 Gb/s | PCIe Gen4 x4 |
| Form Factor | 2.5" | M.2-2280 |
| NAND Type | TLC | TLC |
| Performance | ||
| Sequential Read | 560 MB/s | 4,800 MB/s+757% |
| Sequential Write | ||
| 530 MB/s |
| 4,200 MB/s+692% |
| Endurance (TBW) | 300 | 600+100% |
| Features | ||
| DRAM Cache | Yes+100% | No |
| Platform | ||
| Controller | Samsung MKX | Phison PS5021-E21T |
| PCIe Gen | N/A | 4 |
| Price | ||
| MSRP | $40−11% | $45 |
| Release Date | Jan 2021 | Mar 2023 |
