Caldera SN-6490 XT 4TB PCIe 4.0 NVMe M.2 2280 SSD
SSDs · Caldera · SKU SN6490-XT · Released 2022 · Updated 2026-10-20
Key facts
| Benchmark index | 14,857 (SSDs scale) |
|---|---|
| Category rank | #17,674 |
| Street price | $599 |
| Power | 6 W (active) |
| Performance per dollar | 24.80 |
| Released | 2022 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera SN-6490 XT |
| Capacity | 4 TB |
| Form factor | M.2 2280 |
| Interface | PCIe 4.0 x4, NVMe 2.0 |
| Sequential read | 7,000 MB/s |
| Sequential write | 5,500 MB/s |
| Random 4K read | 1,150K IOPS |
| NAND | 3D TLC, 176-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
Similar SSDs
| Model | Benchmark | Price | Compare |
|---|---|---|---|
| Mirenta SN-5491 SE 2TB PCIe 4.0 NVMe M.2 2280 SSD | 7,803 | $129 | Compare |
| Caldera SN-7949 XT 2TB PCIe 4.0 NVMe M.2 2280 SSD | 10,567 | $309 | Compare |
| Novexa SN-7079 Core 8TB PCIe 5.0 NVMe M.2 2280 SSD | 11,542 | $359 | Compare |
| Altrix SN-6625 XT 500GB SATA 2.5-inch SSD | 3,042 | $29 | Compare |
| Altrix SN-5592 Core 2TB PCIe 4.0 NVMe M.2 2280 SSD | 13,259 | $389 | Compare |
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Cite this page: Hardware Spec Index, “Caldera SN-6490 XT 4TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/3489736 (accessed 2026-10-20).