Hardware Spec Index

Tessarix PX-8521 Ultra Quad M.2 PCIe 5.0 x16 Card

PCIe Cards & NVMe Enclosures · Tessarix · SKU PX8521-ULTRA · Released 2026 · Updated 2026-10-22

Key facts

Benchmark index5,431 (PCIe Cards & NVMe Enclosures scale)
Category rank#26,726
Street price$379
Power12 W
Performance per dollar14.33
Released2026

Specifications

BrandTessarix
ModelTessarix PX-8521 Ultra
TypeQuad M.2 PCIe 5.0 x16 Card
Host interfacePCIe 5.0 x16, requires x4/x4/x4/x4 bifurcation
Throughput4× ~14,000 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, “Tessarix PX-8521 Ultra Quad M.2 PCIe 5.0 x16 Card”, https://vextor7.com/item/3787490 (accessed 2026-10-22).