Caldera SN-4591 Ultra 4TB PCIe 5.0 NVMe M.2 2280 SSD
SSDs · Caldera · SKU SN4591-ULTRA · Released 2026 · Updated 2026-10-24
Key facts
| Benchmark index | 14,447 (SSDs scale) |
|---|---|
| Category rank | #28,141 |
| Street price | $519 |
| Power | 8 W (active) |
| Performance per dollar | 27.84 |
| Released | 2026 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera SN-4591 Ultra |
| Capacity | 4 TB |
| Form factor | M.2 2280 |
| Interface | PCIe 5.0 x4, NVMe 2.0 |
| Sequential read | 13,000 MB/s |
| Sequential write | 11,800 MB/s |
| Random 4K read | 2,100K IOPS |
| NAND | 3D TLC, 232-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
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| Model | Benchmark | Price | Compare |
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| Mirenta SN-5774 Ti 4TB PCIe 5.0 NVMe M.2 2280 SSD | 14,058 | $539 | Compare |
| Caldera SN-8944 Core 2TB PCIe 4.0 NVMe M.2 2280 SSD | 10,706 | $339 | Compare |
| Altrix SN-6889 Ti 4TB PCIe 4.0 NVMe M.2 2280 SSD | 10,916 | $299 | Compare |
| Strivon SN-4301 SE 4TB PCIe 5.0 NVMe M.2 2280 SSD | 14,166 | $559 | Compare |
| Caldera SN-4079 Edge 500GB SATA 2.5-inch SSD | 4,599 | $39 | Compare |
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Cite this page: Hardware Spec Index, “Caldera SN-4591 Ultra 4TB PCIe 5.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/45803285 (accessed 2026-10-24).