Hardware Spec Index

Altrix SN-8491 Ultra 1TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Altrix · SKU SN8491-ULTRA · Released 2023 · Updated 2026-10-26

Key facts

Benchmark index7,612 (SSDs scale)
Category rank#7,156
Street price$139
Power5 W (active)
Performance per dollar54.76
Released2023

Specifications

BrandAltrix
ModelAltrix SN-8491 Ultra
Capacity1 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read6,100 MB/s
Sequential write5,700 MB/s
Random 4K read980K IOPS
NAND3D TLC, 218-layer
CacheDRAM-less (HMB)
Endurance600 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-8491 Ultra 1TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/2949644 (accessed 2026-10-26).