Hardware Spec Index

Caldera SN-1891 Ultra 500GB PCIe 3.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN1891-ULTRA · Released 2019 · Updated 2026-10-23

Key facts

Benchmark index6,484 (SSDs scale)
Category rank#26,935
Street price$89
Power4 W (active)
Performance per dollar72.85
Released2019

Specifications

BrandCaldera
ModelCaldera SN-1891 Ultra
Capacity500 GB
Form factorM.2 2280
InterfacePCIe 3.0 x4, NVMe 1.4
Sequential read3,400 MB/s
Sequential write2,000 MB/s
Random 4K read490K IOPS
NAND3D TLC, 176-layer
CacheDRAM-less (HMB)
Endurance300 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-1891 Ultra 500GB PCIe 3.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/1782494 (accessed 2026-10-23).