Hardware Spec Index

Caldera SN-7621 XT 4TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Caldera · SKU SN7621-XT · Released 2023 · Updated 2026-10-26

Key facts

Benchmark index14,900 (SSDs scale)
Category rank#8,262
Street price$549
Power5 W (active)
Performance per dollar27.14
Released2023

Specifications

BrandCaldera
ModelCaldera SN-7621 XT
Capacity4 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read4,900 MB/s
Sequential write3,600 MB/s
Random 4K read930K IOPS
NAND3D TLC, 232-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-4736 Ultra 4TB PCIe 5.0 NVMe M.2 2280 SSD14,033$519Compare
Mirenta SN-1134 Max 1TB SATA 2.5-inch SSD3,398$39Compare
Altrix SN-4186 Prime 2TB PCIe 3.0 NVMe M.2 2280 SSD9,819$249Compare
Novexa SN-5214 Max 1TB SATA 2.5-inch SSD4,054$39Compare
Altrix SN-3714 Prime 2TB PCIe 4.0 NVMe M.2 2280 SSD10,375$269Compare
Altrix SN-7690 Edge 1TB PCIe 4.0 NVMe M.2 2280 SSD8,104$169Compare

All SSDs · JSON

Cite this page: Hardware Spec Index, “Caldera SN-7621 XT 4TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/83957847 (accessed 2026-10-26).