Hardware Spec Index

Tessarix NX-6637 Core Dual-Port 25GbE SFP28 PCIe Network Card

Network Cards · Tessarix · SKU NX6637-CORE · Released 2024 · Updated 2026-10-20

Key facts

Benchmark index4,811 (Network Cards scale)
Category rank#35,458
Street price$349
Power8 W
Performance per dollar13.79
Released2024

Specifications

BrandTessarix
ModelTessarix NX-6637 Core
Speed25GbE (25G)
Ports2× 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

Related guides

2.5GbE, 5GbE and 10GbE NetworkingPCIe Lanes Explained

Similar Network Cards

ModelBenchmarkPriceCompare
Tessarix NX-4449 Pro 2.5GbE RJ45 USB Adapter1,887$49Compare
Tessarix NX-1806 Plus 5GbE RJ45 USB Adapter3,485$189Compare
Vantrel NX-6811 Prime Dual-Port 10GbE RJ45 PCIe Network Card6,062$469Compare
Strivon NX-5619 SE Dual-Port 25GbE SFP28 PCIe Network Card4,257$309Compare
Vantrel NX-9064 Core 10GbE RJ45 PCIe Network Card3,568$219Compare
Quorvex NX-8839 Ultra Dual-Port 10GbE RJ45 PCIe Network Card5,869$449Compare

All Network Cards · JSON

Cite this page: Hardware Spec Index, “Tessarix NX-6637 Core Dual-Port 25GbE SFP28 PCIe Network Card”, https://vextor7.com/item/48759598 (accessed 2026-10-20).