Hardware Spec Index

Caldera SN-8639 XT 8TB PCIe 5.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN8639-XT · Released 2024 · Updated 2026-10-23

Key facts

Benchmark index11,109 (SSDs scale)
Category rank#19,658
Street price$309
Power8 W (active)
Performance per dollar35.95
Released2024

Specifications

BrandCaldera
ModelCaldera SN-8639 XT
Capacity8 TB
Form factorM.2 2280
InterfacePCIe 5.0 x4, NVMe 2.0
Sequential read14,400 MB/s
Sequential write13,100 MB/s
Random 4K read2,360K IOPS
NAND3D TLC, 218-layer
CacheLPDDR4 DRAM, 8 GB
Endurance4,800 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

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Cite this page: Hardware Spec Index, “Caldera SN-8639 XT 8TB PCIe 5.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/3797207 (accessed 2026-10-23).