Hardware Spec Index

Caldera SN-2956 Ultra 4TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN2956-ULTRA · Released 2023 · Updated 2026-10-25

Key facts

Benchmark index10,665 (SSDs scale)
Category rank#47,458
Street price$309
Power8 W (active)
Performance per dollar34.51
Released2023

Specifications

BrandCaldera
ModelCaldera SN-2956 Ultra
Capacity4 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read5,400 MB/s
Sequential write4,200 MB/s
Random 4K read860K IOPS
NAND3D TLC, 176-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

Similar SSDs

ModelBenchmarkPriceCompare
Strivon SN-5537 Ti 1TB SATA 2.5-inch SSD2,973$39Compare
Caldera SN-9796 Core 500GB PCIe 4.0 NVMe M.2 2280 SSD4,517$59Compare
Altrix SN-7621 SE 4TB PCIe 5.0 NVMe M.2 2280 SSD11,162$309Compare
Strivon SN-9340 Max 1TB PCIe 4.0 NVMe M.2 2280 SSD6,723$119Compare
Caldera SN-5012 Plus 4TB PCIe 3.0 NVMe M.2 2280 SSD11,932$459Compare
Strivon SN-5736 Max 8TB PCIe 4.0 NVMe M.2 2280 SSD13,173$369Compare

All SSDs · JSON

Cite this page: Hardware Spec Index, “Caldera SN-2956 Ultra 4TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/6318478 (accessed 2026-10-25).