Caldera SN-6446 XT 1TB PCIe 3.0 NVMe M.2 2280 SSD
SSDs · Caldera · SKU SN6446-XT · Released 2019 · Updated 2026-10-23
Key facts
| Benchmark index | 7,897 (SSDs scale) |
|---|---|
| Category rank | #33,639 |
| Street price | $159 |
| Power | 5 W (active) |
| Performance per dollar | 49.67 |
| Released | 2019 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera SN-6446 XT |
| Capacity | 1 TB |
| Form factor | M.2 2280 |
| Interface | PCIe 3.0 x4, NVMe 1.4 |
| Sequential read | 3,000 MB/s |
| Sequential write | 2,200 MB/s |
| Random 4K read | 560K IOPS |
| NAND | 3D TLC, 232-layer |
| Cache | DRAM-less (HMB) |
| Endurance | 600 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, “Caldera SN-6446 XT 1TB PCIe 3.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/41311593 (accessed 2026-10-23).