Hardware Spec Index

Caldera SN-6439 XT 4TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN6439-XT · Released 2022 · Updated 2026-10-20

Key facts

Benchmark index11,029 (SSDs scale)
Category rank#2,042
Street price$349
Power7 W (active)
Performance per dollar31.60
Released2022

Specifications

BrandCaldera
ModelCaldera SN-6439 XT
Capacity4 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read6,200 MB/s
Sequential write5,800 MB/s
Random 4K read1,320K IOPS
NAND3D TLC, 238-layer
CacheDDR4 DRAM, 4 GB
Endurance2,400 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

Similar SSDs

ModelBenchmarkPriceCompare
Novexa SN-4790 Ti 500GB SATA 2.5-inch SSD4,306$49Compare
Strivon SN-5870 SE 2TB PCIe 4.0 NVMe M.2 2280 SSD8,382$179Compare
Altrix SN-4341 XT 2TB PCIe 4.0 NVMe M.2 2280 SSD8,991$219Compare
Altrix SN-7898 Plus 1TB PCIe 4.0 NVMe M.2 2280 SSD6,523$119Compare
Strivon SN-2635 Prime 8TB PCIe 5.0 NVMe M.2 2280 SSD11,829$359Compare
Altrix SN-7197 Edge 500GB PCIe 4.0 NVMe M.2 2280 SSD5,164$79Compare

All SSDs · JSON

Cite this page: Hardware Spec Index, “Caldera SN-6439 XT 4TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/7071012 (accessed 2026-10-20).