Caldera SN-4921 Ultra 8TB PCIe 4.0 NVMe M.2 2280 SSD
SSDs · Caldera · SKU SN4921-ULTRA · Released 2022 · Updated 2026-10-20
Key facts
| Benchmark index | 14,900 (SSDs scale) |
|---|---|
| Category rank | #20,994 |
| Street price | $529 |
| Power | 7 W (active) |
| Performance per dollar | 28.17 |
| Released | 2022 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera SN-4921 Ultra |
| Capacity | 8 TB |
| Form factor | M.2 2280 |
| Interface | PCIe 4.0 x4, NVMe 2.0 |
| Sequential read | 5,700 MB/s |
| Sequential write | 4,400 MB/s |
| Random 4K read | 1,140K IOPS |
| NAND | 3D TLC, 218-layer |
| Cache | DDR4 DRAM, 8 GB |
| Endurance | 4,800 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
Similar SSDs
| Model | Benchmark | Price | Compare |
|---|---|---|---|
| Caldera SN-8458 XT 2TB PCIe 4.0 NVMe M.2 2280 SSD | 8,826 | $209 | Compare |
| Altrix SN-7058 Max 1TB SATA 2.5-inch SSD | 3,300 | $29 | Compare |
| Altrix SN-5097 Pro 4TB PCIe 4.0 NVMe M.2 2280 SSD | 13,474 | $509 | Compare |
| Altrix SN-8929 Max 2TB PCIe 5.0 NVMe M.2 2280 SSD | 11,519 | $409 | Compare |
| Strivon SN-6454 Ti 8TB PCIe 5.0 NVMe M.2 2280 SSD | 11,365 | $319 | Compare |
| Novexa SN-4817 Ti 1TB PCIe 4.0 NVMe M.2 2280 SSD | 6,568 | $89 | Compare |
Cite this page: Hardware Spec Index, “Caldera SN-4921 Ultra 8TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/9503799 (accessed 2026-10-20).