Hardware Spec Index

Tessarix NX-6638 Core 25GbE SFP28 PCIe Network Card

Network Cards · Tessarix · SKU NX6638-CORE · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index4,588 (Network Cards scale)
Category rank#7,168
Street price$289
Power6 W
Performance per dollar15.88
Released2025

Specifications

BrandTessarix
ModelTessarix NX-6638 Core
Speed25GbE (25G)
Ports1× SFP28
Host interfacePCIe 4.0 x8
CablingDAC or optical transceiver
StandardIEEE 802.3by (25GBASE-R)
Jumbo framesUp to 9 KB
OffloadsTSO, LRO, RSS, SR-IOV
Wake-on-LANYes
VLANIEEE 802.1Q
OS supportWindows 11, Linux, FreeBSD

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Cite this page: Hardware Spec Index, “Tessarix NX-6638 Core 25GbE SFP28 PCIe Network Card”, https://vextor7.com/item/20074592 (accessed 2026-10-20).