Hardware Spec Index

Caldera SN-4638 Pro 1TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN4638-PRO · Released 2022 · Updated 2026-10-24

Key facts

Benchmark index10,004 (SSDs scale)
Category rank#24,334
Street price$239
Power8 W (active)
Performance per dollar41.86
Released2022

Specifications

BrandCaldera
ModelCaldera SN-4638 Pro
Capacity1 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read7,100 MB/s
Sequential write6,900 MB/s
Random 4K read900K IOPS
NAND3D TLC, 232-layer
CacheDDR4 DRAM, 1 GB
Endurance600 TBW (0.33 DWPD)
Warranty5 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-4638 Pro 1TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/16014248 (accessed 2026-10-24).