Hardware Spec Index

Caldera SN-4891 Ultra 500GB SATA 2.5-inch SSD

SSDs · Caldera · SKU SN4891-ULTRA · Released 2019 · Updated 2026-10-24

Key facts

Benchmark index3,289 (SSDs scale)
Category rank#9,671
Street price$39
Power3 W (active)
Performance per dollar84.33
Released2019

Specifications

BrandCaldera
ModelCaldera SN-4891 Ultra
Capacity500 GB
Form factor2.5" SATA (7 mm)
InterfaceSATA 6 Gb/s (AHCI)
Sequential read550 MB/s
Sequential write520 MB/s
Random 4K read98K IOPS
NAND3D TLC, 176-layer
CacheDRAM-less (SLC cache)
Endurance300 TBW (0.55 DWPD)
Warranty3 years
HeatsinkNone

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Cite this page: Hardware Spec Index, “Caldera SN-4891 Ultra 500GB SATA 2.5-inch SSD”, https://vextor7.com/item/2633335 (accessed 2026-10-24).