Hardware Spec Index

Altrix SN-1821 Ultra 8TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Altrix · SKU SN1821-ULTRA · Released 2020 · Updated 2026-10-19

Key facts

Benchmark index13,964 (SSDs scale)
Category rank#46,008
Street price$479
Power6 W (active)
Performance per dollar29.15
Released2020

Specifications

BrandAltrix
ModelAltrix SN-1821 Ultra
Capacity8 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read5,600 MB/s
Sequential write4,100 MB/s
Random 4K read1,040K IOPS
NAND3D TLC, 176-layer
CacheDDR4 DRAM, 8 GB
Endurance4,800 TBW (0.33 DWPD)
Warranty5 years
HeatsinkHeatsink edition available

Related guides

NVMe SSDs ExplainedM.2 SSD Sizes and KeysSSD Endurance ExplainedDRAM vs DRAM-less SSDsPCIe 4.0 vs PCIe 5.0

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Cite this page: Hardware Spec Index, “Altrix SN-1821 Ultra 8TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/6961901 (accessed 2026-10-19).