Caldera SN-6491 Ultra 2TB PCIe 5.0 NVMe M.2 2280 SSD
SSDs · Caldera · SKU SN6491-ULTRA · Released 2025 · Updated 2026-10-22
Key facts
| Benchmark index | 12,399 (SSDs scale) |
|---|---|
| Category rank | #36,714 |
| Street price | $379 |
| Power | 10 W (active) |
| Performance per dollar | 32.72 |
| Released | 2025 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera SN-6491 Ultra |
| Capacity | 2 TB |
| Form factor | M.2 2280 |
| Interface | PCIe 5.0 x4, NVMe 2.0 |
| Sequential read | 13,200 MB/s |
| Sequential write | 12,400 MB/s |
| Random 4K read | 2,050K IOPS |
| NAND | 3D TLC, 232-layer |
| Cache | LPDDR4 DRAM, 2 GB |
| Endurance | 1,200 TBW (0.33 DWPD) |
| Warranty | 5 years |
| Heatsink | Included (recommended for sustained loads) |
Related guides
NVMe SSDs ExplainedM.2 SSD Sizes and KeysSSD Endurance ExplainedDRAM vs DRAM-less SSDsPCIe 5.0 ExplainedPCIe 4.0 vs PCIe 5.0
Similar SSDs
| Model | Benchmark | Price | Compare |
|---|---|---|---|
| Mirenta SN-6428 Prime 2TB PCIe 4.0 NVMe M.2 2280 SSD | 8,026 | $169 | Compare |
| Altrix SN-8379 Ti 2TB PCIe 5.0 NVMe M.2 2280 SSD | 9,896 | $269 | Compare |
| Altrix SN-2028 SE 8TB PCIe 4.0 NVMe M.2 2280 SSD | 11,313 | $389 | Compare |
| Novexa SN-2544 XT 8TB PCIe 4.0 NVMe M.2 2280 SSD | 14,844 | $569 | Compare |
| Novexa SN-3967 Edge 4TB PCIe 3.0 NVMe M.2 2280 SSD | 11,544 | $429 | Compare |
| Mirenta SN-2818 Ti 2TB PCIe 4.0 NVMe M.2 2280 SSD | 11,738 | $369 | Compare |
Cite this page: Hardware Spec Index, “Caldera SN-6491 Ultra 2TB PCIe 5.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/85707310 (accessed 2026-10-22).