Hardware Spec Index

Tessarix NX-8421 Ultra Dual-Port 10GbE RJ45 PCIe Network Card

Network Cards · Tessarix · SKU NX8421-ULTRA · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index4,499 (Network Cards scale)
Category rank#17,524
Street price$299
Power13 W
Performance per dollar15.05
Released2021

Specifications

BrandTessarix
ModelTessarix NX-8421 Ultra
Speed10GbE (10G)
Ports2× RJ45
Host interfacePCIe 3.0 x8
CablingCat6a (100 m) / Cat6 (up to 55 m)
StandardIEEE 802.3an (10GBASE-T)
Jumbo framesUp to 9 KB
OffloadsTSO, LRO, RSS, SR-IOV
Wake-on-LANYes
VLANIEEE 802.1Q
OS supportWindows 11, Linux, FreeBSD

Related guides

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Cite this page: Hardware Spec Index, “Tessarix NX-8421 Ultra Dual-Port 10GbE RJ45 PCIe Network Card”, https://vextor7.com/item/448369 (accessed 2026-10-19).