Caldera SN-6421 Prime 8TB PCIe 3.0 NVMe M.2 2280 SSD
SSDs · Caldera · SKU SN6421-PRIME · Released 2019 · Updated 2026-10-24
Key facts
| Benchmark index | 14,900 (SSDs scale) |
|---|---|
| Category rank | #16,074 |
| Street price | $599 |
| Power | 6 W (active) |
| Performance per dollar | 24.87 |
| Released | 2019 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera SN-6421 Prime |
| Capacity | 8 TB |
| Form factor | M.2 2280 |
| Interface | PCIe 3.0 x4, NVMe 1.4 |
| Sequential read | 2,600 MB/s |
| Sequential write | 2,200 MB/s |
| Random 4K read | 360K IOPS |
| NAND | 3D TLC, 176-layer |
| Cache | DDR4 DRAM, 8 GB |
| Endurance | 4,800 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
Similar SSDs
| Model | Benchmark | Price | Compare |
|---|---|---|---|
| Mirenta SN-8411 Prime 1TB SATA 2.5-inch SSD | 4,561 | $49 | Compare |
| Mirenta SN-5030 Edge 4TB PCIe 5.0 NVMe M.2 2280 SSD | 14,476 | $559 | Compare |
| Mirenta SN-7735 Plus 2TB PCIe 5.0 NVMe M.2 2280 SSD | 10,071 | $269 | Compare |
| Strivon SN-6354 Ti 4TB PCIe 4.0 NVMe M.2 2280 SSD | 12,519 | $459 | Compare |
| Altrix SN-8530 Plus 1TB PCIe 4.0 NVMe M.2 2230 SSD | 6,830 | $109 | Compare |
| Altrix SN-6283 Edge 2TB PCIe 4.0 NVMe M.2 2280 SSD | 13,011 | $399 | Compare |
Cite this page: Hardware Spec Index, “Caldera SN-6421 Prime 8TB PCIe 3.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/7265175 (accessed 2026-10-24).