Altrix SN-6821 SE 4TB PCIe 4.0 NVMe M.2 2280 SSD
SSDs · Altrix · SKU SN6821-SE · Released 2021 · Updated 2026-10-20
Key facts
| Benchmark index | 12,538 (SSDs scale) |
|---|---|
| Category rank | #17,073 |
| Street price | $359 |
| Power | 7 W (active) |
| Performance per dollar | 34.92 |
| Released | 2021 |
Specifications
| Brand | Altrix |
|---|---|
| Model | Altrix SN-6821 SE |
| Capacity | 4 TB |
| Form factor | M.2 2280 |
| Interface | PCIe 4.0 x4, NVMe 2.0 |
| Sequential read | 6,600 MB/s |
| Sequential write | 5,100 MB/s |
| Random 4K read | 1,010K IOPS |
| NAND | 3D TLC, 218-layer |
| Cache | DDR4 DRAM, 4 GB |
| Endurance | 2,400 TBW (0.33 DWPD) |
| Warranty | 5 years |
| Heatsink | None |
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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| Caldera SN-9845 Core 1TB PCIe 4.0 NVMe M.2 2280 SSD | 7,180 | $109 | Compare |
| Novexa SN-6927 Pro 2TB PCIe 3.0 NVMe M.2 2280 SSD | 11,092 | $309 | Compare |
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Cite this page: Hardware Spec Index, “Altrix SN-6821 SE 4TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/4132989 (accessed 2026-10-20).