Caldera SN-1939 Ultra 4TB PCIe 5.0 NVMe M.2 2280 SSD
SSDs · Caldera · SKU SN1939-ULTRA · Released 2025 · Updated 2026-10-21
Key facts
| Benchmark index | 10,313 (SSDs scale) |
|---|---|
| Category rank | #3,608 |
| Street price | $289 |
| Power | 10 W (active) |
| Performance per dollar | 35.69 |
| Released | 2025 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera SN-1939 Ultra |
| Capacity | 4 TB |
| Form factor | M.2 2280 |
| Interface | PCIe 5.0 x4, NVMe 2.0 |
| Sequential read | 13,300 MB/s |
| Sequential write | 10,600 MB/s |
| Random 4K read | 2,190K IOPS |
| NAND | 3D TLC, 176-layer |
| Cache | LPDDR4 DRAM, 4 GB |
| Endurance | 2,400 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 |
|---|---|---|---|
| Novexa SN-3695 Max 4TB PCIe 3.0 NVMe M.2 2280 SSD | 13,187 | $449 | Compare |
| Novexa SN-7975 Edge 1TB PCIe 4.0 NVMe M.2 2280 SSD | 4,712 | $59 | Compare |
| Mirenta SN-7568 SE 4TB PCIe 3.0 NVMe M.2 2280 SSD | 11,547 | $379 | Compare |
| Novexa SN-1880 XT 8TB PCIe 5.0 NVMe M.2 2280 SSD | 11,945 | $399 | Compare |
| Mirenta SN-1619 Ti 1TB SATA 2.5-inch SSD | 3,701 | $39 | Compare |
| Novexa SN-8665 Ti 500GB SATA 2.5-inch SSD | 4,276 | $39 | Compare |
Cite this page: Hardware Spec Index, “Caldera SN-1939 Ultra 4TB PCIe 5.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/28119748 (accessed 2026-10-21).