Hardware Spec Index

Caldera SN-4391 Ultra 1TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN4391-ULTRA · Released 2023 · Updated 2026-10-21

Key facts

Benchmark index7,255 (SSDs scale)
Category rank#10,688
Street price$129
Power6 W (active)
Performance per dollar56.24
Released2023

Specifications

BrandCaldera
ModelCaldera SN-4391 Ultra
Capacity1 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read5,200 MB/s
Sequential write4,200 MB/s
Random 4K read970K IOPS
NAND3D TLC, 238-layer
CacheDRAM-less (HMB)
Endurance600 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-4391 Ultra 1TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/95543093 (accessed 2026-10-21).