Hardware Spec Index

Tessarix NX-3981 Ultra 5GbE RJ45 PCIe Network Card

Network Cards · Tessarix · SKU NX3981-ULTRA · Released 2026 · Updated 2026-10-22

Key facts

Benchmark index2,517 (Network Cards scale)
Category rank#28,947
Street price$99
Power3 W
Performance per dollar25.42
Released2026

Specifications

BrandTessarix
ModelTessarix NX-3981 Ultra
Speed5GbE (5G/1G/100M)
Ports1× RJ45
Host interfacePCIe 3.0 x1
CablingCat5e or better (100 m)
StandardIEEE 802.3bz (2.5G/5GBASE-T)
Jumbo framesUp to 9 KB
OffloadsTSO, checksum offload
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
Vantrel NX-1364 Ultra Dual-Port 25GbE SFP28 PCIe Network Card5,085$339Compare
Strivon NX-7614 Pro 2.5GbE RJ45 PCIe Network Card1,348$39Compare
Strivon NX-5657 Core Dual-Port 10GbE SFP+ PCIe Network Card4,038$259Compare
Tessarix NX-7998 Edge 2.5GbE RJ45 USB Adapter2,055$69Compare
Strivon NX-4431 Max 2.5GbE RJ45 PCIe Network Card1,777$49Compare
Tessarix NX-6684 Ultra Dual-Port 25GbE SFP28 PCIe Network Card5,828$479Compare

All Network Cards · JSON

Cite this page: Hardware Spec Index, “Tessarix NX-3981 Ultra 5GbE RJ45 PCIe Network Card”, https://vextor7.com/item/30454201 (accessed 2026-10-22).