Hardware Spec Index

Caldera SN-4478 Plus 1TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN4478-PLUS · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index6,285 (SSDs scale)
Category rank#4,289
Street price$89
Power6 W (active)
Performance per dollar70.62
Released2025

Specifications

BrandCaldera
ModelCaldera SN-4478 Plus
Capacity1 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read5,700 MB/s
Sequential write5,100 MB/s
Random 4K read860K IOPS
NAND3D QLC, 176-layer
CacheDRAM-less (HMB)
Endurance240 TBW (0.22 DWPD)
Warranty3 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-4478 Plus 1TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/51455591 (accessed 2026-10-20).