Caldera SN-6421 Edge 500GB PCIe 4.0 NVMe M.2 2280 SSD
SSDs · Caldera · SKU SN6421-EDGE · Released 2024 · Updated 2026-10-23
Key facts
| Benchmark index | 4,803 (SSDs scale) |
|---|---|
| Category rank | #35,603 |
| Street price | $49 |
| Power | 7 W (active) |
| Performance per dollar | 98.02 |
| Released | 2024 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera SN-6421 Edge |
| Capacity | 500 GB |
| Form factor | M.2 2280 |
| Interface | PCIe 4.0 x4, NVMe 2.0 |
| Sequential read | 6,300 MB/s |
| Sequential write | 4,000 MB/s |
| Random 4K read | 1,170K IOPS |
| NAND | 3D QLC, 232-layer |
| Cache | DRAM-less (HMB) |
| Endurance | 180 TBW (0.33 DWPD) |
| Warranty | 3 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
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| Model | Benchmark | Price | Compare |
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| Mirenta SN-8426 Ti 2TB PCIe 3.0 NVMe M.2 2280 SSD | 10,884 | $369 | Compare |
| Caldera SN-5559 Edge 4TB PCIe 4.0 NVMe M.2 2280 SSD | 10,956 | $369 | Compare |
| Novexa SN-1444 Edge 8TB PCIe 3.0 NVMe M.2 2280 SSD | 14,706 | $489 | Compare |
| Novexa SN-1606 SE 8TB PCIe 5.0 NVMe M.2 2280 SSD | 12,590 | $459 | Compare |
| Novexa SN-3297 XT 2TB PCIe 4.0 NVMe M.2 2280 SSD | 10,915 | $319 | Compare |
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Cite this page: Hardware Spec Index, “Caldera SN-6421 Edge 500GB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/6541746 (accessed 2026-10-23).