Hardware Spec Index

Caldera SN-6645 Ultra 1TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN6645-ULTRA · Released 2025 · Updated 2026-10-18

Key facts

Benchmark index7,540 (SSDs scale)
Category rank#41,521
Street price$129
Power7 W (active)
Performance per dollar58.45
Released2025

Specifications

BrandCaldera
ModelCaldera SN-6645 Ultra
Capacity1 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read6,300 MB/s
Sequential write4,800 MB/s
Random 4K read1,000K IOPS
NAND3D QLC, 218-layer
CacheDRAM-less (HMB)
Endurance360 TBW (0.33 DWPD)
Warranty3 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-5395 Plus 8TB PCIe 5.0 NVMe M.2 2280 SSD10,867$289Compare
Altrix SN-6840 Edge 8TB PCIe 4.0 NVMe M.2 2280 SSD12,057$489Compare
Mirenta SN-5520 SE 8TB PCIe 4.0 NVMe M.2 2280 SSD13,861$539Compare
Strivon SN-8366 Ti 500GB PCIe 4.0 NVMe M.2 2280 SSD4,799$59Compare
Mirenta SN-6869 Pro 500GB SATA 2.5-inch SSD4,577$49Compare
Mirenta SN-9832 Ti 4TB PCIe 4.0 NVMe M.2 2280 SSD11,864$389Compare

All SSDs · JSON

Cite this page: Hardware Spec Index, “Caldera SN-6645 Ultra 1TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/11791007 (accessed 2026-10-18).