Caldera SN-8558 Ultra 4TB PCIe 4.0 NVMe M.2 2280 SSD
SSDs · Caldera · SKU SN8558-ULTRA · Released 2023 · Updated 2026-10-22
Key facts
| Benchmark index | 13,238 (SSDs scale) |
|---|---|
| Category rank | #17,023 |
| Street price | $529 |
| Power | 7 W (active) |
| Performance per dollar | 25.02 |
| Released | 2023 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera SN-8558 Ultra |
| Capacity | 4 TB |
| Form factor | M.2 2280 |
| Interface | PCIe 4.0 x4, NVMe 2.0 |
| Sequential read | 6,700 MB/s |
| Sequential write | 4,900 MB/s |
| Random 4K read | 1,050K 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 |
|---|---|---|---|
| Caldera SN-5737 Plus 500GB SATA 2.5-inch SSD | 3,395 | $39 | Compare |
| Strivon SN-1500 Edge 1TB PCIe 4.0 NVMe M.2 2280 SSD | 6,509 | $109 | Compare |
| Strivon SN-3526 Plus 500GB SATA 2.5-inch SSD | 4,378 | $39 | Compare |
| Altrix SN-3621 SE 2TB PCIe 4.0 NVMe M.2 2280 SSD | 10,100 | $309 | Compare |
| Mirenta SN-6694 SE 2TB PCIe 3.0 NVMe M.2 2280 SSD | 12,927 | $389 | Compare |
| Novexa SN-4705 Edge 4TB PCIe 5.0 NVMe M.2 2280 SSD | 11,614 | $319 | Compare |
Cite this page: Hardware Spec Index, “Caldera SN-8558 Ultra 4TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/35454385 (accessed 2026-10-22).