Hardware Spec Index

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

SSDs · Caldera · SKU SN4478-XT · Released 2022 · Updated 2026-10-26

Key facts

Benchmark index8,221 (SSDs scale)
Category rank#27,793
Street price$169
Power5 W (active)
Performance per dollar48.64
Released2022

Specifications

BrandCaldera
ModelCaldera SN-4478 XT
Capacity2 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read7,100 MB/s
Sequential write5,200 MB/s
Random 4K read1,000K IOPS
NAND3D TLC, 218-layer
CacheDRAM-less (HMB)
Endurance1,200 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-4478 XT 2TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/7632462 (accessed 2026-10-26).