Hardware Spec Index

Caldera SN-4956 Ultra 2TB PCIe 5.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN4956-ULTRA · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index12,128 (SSDs scale)
Category rank#27,310
Street price$359
Power11 W (active)
Performance per dollar33.78
Released2025

Specifications

BrandCaldera
ModelCaldera SN-4956 Ultra
Capacity2 TB
Form factorM.2 2280
InterfacePCIe 5.0 x4, NVMe 2.0
Sequential read11,700 MB/s
Sequential write11,200 MB/s
Random 4K read1,690K IOPS
NAND3D TLC, 176-layer
CacheLPDDR4 DRAM, 2 GB
Endurance1,200 TBW (0.33 DWPD)
Warranty5 years
HeatsinkIncluded (recommended for sustained loads)

Related guides

NVMe SSDs ExplainedM.2 SSD Sizes and KeysSSD Endurance ExplainedDRAM vs DRAM-less SSDsPCIe 5.0 ExplainedPCIe 4.0 vs PCIe 5.0

Similar SSDs

ModelBenchmarkPriceCompare
Mirenta SN-3546 Edge 4TB PCIe 5.0 NVMe M.2 2280 SSD12,679$459Compare
Strivon SN-4966 XT 1TB PCIe 4.0 NVMe M.2 2280 SSD7,676$139Compare
Altrix SN-3517 Ti 8TB PCIe 5.0 NVMe M.2 2280 SSD9,988$269Compare
Altrix SN-4147 Prime 2TB PCIe 4.0 NVMe M.2 2280 SSD6,478$109Compare
Mirenta SN-1726 Edge 2TB PCIe 4.0 NVMe M.2 2280 SSD7,683$149Compare
Strivon SN-6325 Plus 8TB PCIe 4.0 NVMe M.2 2280 SSD13,287$459Compare

All SSDs · JSON

Cite this page: Hardware Spec Index, “Caldera SN-4956 Ultra 2TB PCIe 5.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/20058700 (accessed 2026-10-20).