Hardware Spec Index

Altrix SN-8991 Ultra 4TB PCIe 4.0 NVMe M.2 2280 SSD

SSDs · Altrix · SKU SN8991-ULTRA · Released 2023 · Updated 2026-10-21

Key facts

Benchmark index12,446 (SSDs scale)
Category rank#6,094
Street price$419
Power8 W (active)
Performance per dollar29.70
Released2023

Specifications

BrandAltrix
ModelAltrix SN-8991 Ultra
Capacity4 TB
Form factorM.2 2280
InterfacePCIe 4.0 x4, NVMe 2.0
Sequential read7,400 MB/s
Sequential write6,000 MB/s
Random 4K read940K IOPS
NAND3D TLC, 232-layer
CacheDDR4 DRAM, 4 GB
Endurance2,400 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

Similar SSDs

ModelBenchmarkPriceCompare
Caldera SN-9710 Ti 8TB PCIe 5.0 NVMe M.2 2280 SSD11,747$369Compare
Caldera SN-8319 Max 1TB PCIe 4.0 NVMe M.2 2280 SSD5,214$69Compare
Altrix SN-1498 Core 8TB PCIe 5.0 NVMe M.2 2280 SSD14,217$529Compare
Strivon SN-1317 Plus 2TB PCIe 4.0 NVMe M.2 2280 SSD9,644$209Compare
Caldera SN-7426 XT 500GB PCIe 3.0 NVMe M.2 2280 SSD5,802$89Compare
Strivon SN-9689 Ultra 2TB PCIe 3.0 NVMe M.2 2280 SSD7,438$149Compare

All SSDs · JSON

Cite this page: Hardware Spec Index, “Altrix SN-8991 Ultra 4TB PCIe 4.0 NVMe M.2 2280 SSD”, https://vextor7.com/item/4884344 (accessed 2026-10-21).