Hardware Spec Index

Caldera SN-4921 Ultra 1TB PCIe 4.0 NVMe M.2 2230 SSD

SSDs · Caldera · SKU SN4921-ULTRA · Released 2023 · Updated 2026-10-23

Key facts

Benchmark index4,901 (SSDs scale)
Category rank#11,505
Street price$59
Power7 W (active)
Performance per dollar83.07
Released2023

Specifications

BrandCaldera
ModelCaldera SN-4921 Ultra
Capacity1 TB
Form factorM.2 2230
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read5,800 MB/s
Sequential write4,900 MB/s
Random 4K read900K IOPS
NAND3D TLC, 218-layer
CacheDRAM-less (HMB)
Endurance600 TBW (0.55 DWPD)
Warranty3 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-4921 Ultra 1TB PCIe 4.0 NVMe M.2 2230 SSD”, https://vextor7.com/item/93029554 (accessed 2026-10-23).