Hardware Spec Index

Caldera SN-7646 Ultra 4TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN7646-ULTRA · Released 2022 · Updated 2026-10-19

Key facts

Benchmark index13,966 (SSDs scale)
Category rank#2,386
Street price$599
Power8 W (active)
Performance per dollar23.32
Released2022

Specifications

BrandCaldera
ModelCaldera SN-7646 Ultra
Capacity4 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read6,800 MB/s
Sequential write5,000 MB/s
Random 4K read1,350K IOPS
NAND3D TLC, 218-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
Mirenta SN-6935 SE 2TB PCIe 4.0 NVMe M.2 2280 SSD9,545$249Compare
Strivon SN-1729 Core 2TB PCIe 4.0 NVMe M.2 2230 SSD6,958$99Compare
Mirenta SN-5914 Plus 2TB PCIe 4.0 NVMe M.2 2280 SSD11,569$389Compare
Caldera SN-2919 SE 500GB PCIe 4.0 NVMe M.2 2280 SSD4,578$49Compare
Novexa SN-5236 Core 2TB PCIe 3.0 NVMe M.2 2280 SSD10,116$249Compare
Strivon SN-3260 Pro 1TB PCIe 4.0 NVMe M.2 2280 SSD8,698$159Compare

All SSDs · JSON

Cite this page: Hardware Spec Index, “Caldera SN-7646 Ultra 4TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/17036632 (accessed 2026-10-19).