Hardware Spec Index

Caldera SN-8421 Plus 8TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN8421-PLUS · Released 2022 · Updated 2026-10-20

Key facts

Benchmark index14,584 (SSDs scale)
Category rank#11,514
Street price$559
Power7 W (active)
Performance per dollar26.09
Released2022

Specifications

BrandCaldera
ModelCaldera SN-8421 Plus
Capacity8 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read6,500 MB/s
Sequential write6,200 MB/s
Random 4K read980K IOPS
NAND3D TLC, 238-layer
CacheDDR4 DRAM, 8 GB
Endurance4,800 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

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Cite this page: Hardware Spec Index, “Caldera SN-8421 Plus 8TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/984652 (accessed 2026-10-20).