Hardware Spec Index

Caldera SN-4427 Ultra 1TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN4427-ULTRA · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index6,481 (SSDs scale)
Category rank#29,669
Street price$99
Power6 W (active)
Performance per dollar65.46
Released2021

Specifications

BrandCaldera
ModelCaldera SN-4427 Ultra
Capacity1 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read5,400 MB/s
Sequential write5,000 MB/s
Random 4K read720K IOPS
NAND3D QLC, 218-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-4427 Ultra 1TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/52592898 (accessed 2026-10-19).