Hardware Spec Index

Caldera SN-7956 Ultra 4TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN7956-ULTRA · Released 2022 · Updated 2026-10-27

Key facts

Benchmark index11,241 (SSDs scale)
Category rank#40,270
Street price$339
Power6 W (active)
Performance per dollar33.16
Released2022

Specifications

BrandCaldera
ModelCaldera SN-7956 Ultra
Capacity4 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read5,800 MB/s
Sequential write4,400 MB/s
Random 4K read1,290K IOPS
NAND3D TLC, 238-layer
CacheDDR4 DRAM, 4 GB
Endurance2,400 TBW (0.33 DWPD)
Warranty5 years
HeatsinkHeatsink edition available

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-7956 Ultra 4TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/4516880 (accessed 2026-10-27).