Hardware Spec Index

Altrix PX-9855 Ultra Quad M.2 PCIe 4.0 x16 Card

PCIe Cards & NVMe Enclosures · Altrix · SKU PX9855-ULTRA · Released 2021 · Updated 2026-10-24

Key facts

Benchmark index4,192 (PCIe Cards & NVMe Enclosures scale)
Category rank#21,354
Street price$249
Power12 W
Performance per dollar16.84
Released2021

Specifications

BrandAltrix
ModelAltrix PX-9855 Ultra
TypeQuad M.2 PCIe 4.0 x16 Card
Host interfacePCIe 4.0 x16, requires x4/x4/x4/x4 bifurcation
Throughput4× ~7,000 MB/s
Drive supportM.2 NVMe 2230 / 2242 / 2260 / 2280
CoolingPassive heatsink
Bus powerSlot-powered
CompatibilityUEFI boot supported; check slot bifurcation

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Cite this page: Hardware Spec Index, “Altrix PX-9855 Ultra Quad M.2 PCIe 4.0 x16 Card”, https://vextor7.com/item/3961359 (accessed 2026-10-24).