Hardware Spec Index

Caldera SN-1256 Ultra 4TB PCIe 3.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN1256-ULTRA · Released 2019 · Updated 2026-10-21

Key facts

Benchmark index13,015 (SSDs scale)
Category rank#4,761
Street price$439
Power6 W (active)
Performance per dollar29.65
Released2019

Specifications

BrandCaldera
ModelCaldera SN-1256 Ultra
Capacity4 TB
Form factorM.2 2280
InterfacePCIe 3.0 x4, NVMe 1.4
Sequential read2,400 MB/s
Sequential write1,800 MB/s
Random 4K read550K IOPS
NAND3D TLC, 232-layer
CacheDDR4 DRAM, 4 GB
Endurance2,400 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-1256 Ultra 4TB PCIe 3.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/331785 (accessed 2026-10-21).