Hardware Spec Index

Caldera SN-8642 XT 4TB PCIe 3.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN8642-XT · Released 2019 · Updated 2026-10-22

Key facts

Benchmark index12,445 (SSDs scale)
Category rank#10,914
Street price$459
Power4 W (active)
Performance per dollar27.11
Released2019

Specifications

BrandCaldera
ModelCaldera SN-8642 XT
Capacity4 TB
Form factorM.2 2280
InterfacePCIe 3.0 x4, NVMe 1.4
Sequential read3,100 MB/s
Sequential write2,700 MB/s
Random 4K read570K IOPS
NAND3D TLC, 218-layer
CacheDDR4 DRAM, 4 GB
Endurance2,400 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-8642 XT 4TB PCIe 3.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/7004749 (accessed 2026-10-22).