Hardware Spec Index

Caldera SN-6667 Ultra 4TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN6667-ULTRA · Released 2023 · Updated 2026-10-22

Key facts

Benchmark index14,719 (SSDs scale)
Category rank#30,726
Street price$599
Power8 W (active)
Performance per dollar24.57
Released2023

Specifications

BrandCaldera
ModelCaldera SN-6667 Ultra
Capacity4 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read6,500 MB/s
Sequential write4,900 MB/s
Random 4K read1,120K 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
Caldera SN-3506 Core 2TB PCIe 4.0 NVMe M.2 2280 SSD13,427$469Compare
Altrix SN-5534 SE 500GB SATA 2.5-inch SSD3,078$29Compare
Altrix SN-4014 Ultra 500GB SATA 2.5-inch SSD3,958$39Compare
Novexa SN-1338 XT 1TB PCIe 4.0 NVMe M.2 2280 SSD5,076$69Compare
Caldera SN-3505 Pro 2TB PCIe 4.0 NVMe M.2 2280 SSD10,544$259Compare
Altrix SN-2525 Core 2TB PCIe 4.0 NVMe M.2 2280 SSD9,191$229Compare

All SSDs · JSON

Cite this page: Hardware Spec Index, “Caldera SN-6667 Ultra 4TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/8208733 (accessed 2026-10-22).