Hardware Spec Index

Caldera SN-6420 XT 4TB PCIe 3.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN6420-XT · Released 2019 · Updated 2026-10-25

Key facts

Benchmark index12,034 (SSDs scale)
Category rank#5,973
Street price$379
Power6 W (active)
Performance per dollar31.75
Released2019

Specifications

BrandCaldera
ModelCaldera SN-6420 XT
Capacity4 TB
Form factorM.2 2280
InterfacePCIe 3.0 x4, NVMe 1.4
Sequential read3,100 MB/s
Sequential write2,700 MB/s
Random 4K read360K IOPS
NAND3D TLC, 238-layer
CacheDDR4 DRAM, 4 GB
Endurance2,400 TBW (0.33 DWPD)
Warranty5 years
HeatsinkNone

Related guides

NVMe SSDs ExplainedM.2 SSD Sizes and KeysSSD Endurance ExplainedDRAM vs DRAM-less SSDsPCIe 4.0 vs PCIe 5.0

Similar SSDs

ModelBenchmarkPriceCompare
Mirenta SN-1491 Max 2TB PCIe 4.0 NVMe M.2 2280 SSD10,222$309Compare
Novexa SN-3436 Plus 500GB SATA 2.5-inch SSD3,219$29Compare
Strivon SN-3084 Pro 2TB PCIe 5.0 NVMe M.2 2280 SSD10,905$299Compare
Caldera SN-7364 SE 2TB PCIe 4.0 NVMe M.2 2280 SSD7,060$139Compare
Mirenta SN-2237 Ultra 1TB PCIe 4.0 NVMe M.2 2230 SSD5,805$69Compare
Mirenta SN-5882 Prime 1TB SATA 2.5-inch SSD3,300$29Compare

All SSDs · JSON

Cite this page: Hardware Spec Index, “Caldera SN-6420 XT 4TB PCIe 3.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/11907489 (accessed 2026-10-25).