Hardware Spec Index

Altrix SN-6491 Ultra 1TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Altrix · SKU SN6491-ULTRA · Released 2020 · Updated 2026-10-18

Key facts

Benchmark index5,095 (SSDs scale)
Category rank#796
Street price$69
Power5 W (active)
Performance per dollar73.84
Released2020

Specifications

BrandAltrix
ModelAltrix SN-6491 Ultra
Capacity1 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read5,500 MB/s
Sequential write4,900 MB/s
Random 4K read1,300K IOPS
NAND3D TLC, 176-layer
CacheDRAM-less (HMB)
Endurance600 TBW (0.55 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

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Cite this page: Hardware Spec Index, “Altrix SN-6491 Ultra 1TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/17525217 (accessed 2026-10-18).