Hardware Spec Index

Tessarix NX-6516 Ultra 25GbE SFP28 PCIe Network Card

Network Cards · Tessarix · SKU NX6516-ULTRA · Released 2021 · Updated 2026-10-23

Key facts

Benchmark index5,939 (Network Cards scale)
Category rank#35,460
Street price$439
Power6 W
Performance per dollar13.53
Released2021

Specifications

BrandTessarix
ModelTessarix NX-6516 Ultra
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

Related guides

2.5GbE, 5GbE and 10GbE NetworkingPCIe Lanes Explained

Similar Network Cards

ModelBenchmarkPriceCompare
Tessarix NX-9255 Max Dual-Port 10GbE RJ45 PCIe Network Card5,452$349Compare
Tessarix NX-5174 Pro 2.5GbE RJ45 USB Adapter2,245$89Compare
Tessarix NX-1228 Ti 2.5GbE RJ45 PCIe Network Card2,107$59Compare
Tessarix NX-3981 Pro 2.5GbE RJ45 PCIe Network Card1,363$39Compare
Tessarix NX-4314 Pro 5GbE RJ45 PCIe Network Card3,495$189Compare
Vantrel NX-4740 Edge 5GbE RJ45 USB Adapter3,494$199Compare

All Network Cards · JSON

Cite this page: Hardware Spec Index, “Tessarix NX-6516 Ultra 25GbE SFP28 PCIe Network Card”, https://vextor7.com/item/93481931 (accessed 2026-10-23).