Hardware Spec Index

Caldera SN-6991 Plus 500GB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN6991-PLUS · Released 2024 · Updated 2026-10-20

Key facts

Benchmark index5,633 (SSDs scale)
Category rank#33,686
Street price$79
Power6 W (active)
Performance per dollar71.30
Released2024

Specifications

BrandCaldera
ModelCaldera SN-6991 Plus
Capacity500 GB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read6,600 MB/s
Sequential write4,700 MB/s
Random 4K read1,360K IOPS
NAND3D QLC, 238-layer
CacheDRAM-less (HMB)
Endurance120 TBW (0.22 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-6991 Plus 500GB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/6572024 (accessed 2026-10-20).