Mirenta SN-9921 Ultra 500GB PCIe 4.0 NVMe M.2 2280 SSD
SSDs · Mirenta · SKU SN9921-ULTRA · Released 2025 · Updated 2026-10-21
Key facts
| Benchmark index | 6,071 (SSDs scale) |
|---|---|
| Category rank | #2,018 |
| Street price | $89 |
| Power | 7 W (active) |
| Performance per dollar | 68.21 |
| Released | 2025 |
Specifications
| Brand | Mirenta |
|---|---|
| Model | Mirenta SN-9921 Ultra |
| Capacity | 500 GB |
| Form factor | M.2 2280 |
| Interface | PCIe 4.0 x4, NVMe 2.0 |
| Sequential read | 6,200 MB/s |
| Sequential write | 3,800 MB/s |
| Random 4K read | 810K IOPS |
| NAND | 3D TLC, 176-layer |
| Cache | DRAM-less (HMB) |
| Endurance | 300 TBW (0.33 DWPD) |
| Warranty | 5 years |
| Heatsink | Heatsink edition available |
Related guides
NVMe SSDs ExplainedM.2 SSD Sizes and KeysSSD Endurance ExplainedDRAM vs DRAM-less SSDsPCIe 4.0 vs PCIe 5.0
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Cite this page: Hardware Spec Index, “Mirenta SN-9921 Ultra 500GB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/6946435 (accessed 2026-10-21).