Caldera SN-4631 XT 1TB PCIe 4.0 NVMe M.2 2280 SSD
SSDs · Caldera · SKU SN4631-XT · Released 2025 · Updated 2026-10-21
Key facts
| Benchmark index | 7,594 (SSDs scale) |
|---|---|
| Category rank | #17,293 |
| Street price | $139 |
| Power | 8 W (active) |
| Performance per dollar | 54.63 |
| Released | 2025 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera SN-4631 XT |
| Capacity | 1 TB |
| Form factor | M.2 2280 |
| Interface | PCIe 4.0 x4, NVMe 2.0 |
| Sequential read | 7,400 MB/s |
| Sequential write | 6,500 MB/s |
| Random 4K read | 880K IOPS |
| NAND | 3D QLC, 218-layer |
| Cache | DRAM-less (HMB) |
| Endurance | 240 TBW (0.22 DWPD) |
| Warranty | 3 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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Cite this page: Hardware Spec Index, “Caldera SN-4631 XT 1TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/2013945 (accessed 2026-10-21).