Hardware Spec Index

Tessarix NX-9921 Pro Dual-Port 25GbE SFP28 PCIe Network Card

Network Cards · Tessarix · SKU NX9921-PRO · Released 2024 · Updated 2026-10-24

Key facts

Benchmark index5,167 (Network Cards scale)
Category rank#37,055
Street price$369
Power8 W
Performance per dollar14.00
Released2024

Specifications

BrandTessarix
ModelTessarix NX-9921 Pro
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
Strivon NX-1976 Ultra 10GbE SFP+ PCIe Network Card4,615$239Compare
Strivon NX-2872 Ti 25GbE SFP28 PCIe Network Card6,100$479Compare
Tessarix NX-2838 Ti 25GbE SFP28 PCIe Network Card5,679$389Compare
Vantrel NX-6441 SE 5GbE RJ45 PCIe Network Card3,019$139Compare
Tessarix NX-6006 SE 5GbE RJ45 PCIe Network Card2,660$99Compare
Tessarix NX-7092 Pro Dual-Port 10GbE SFP+ PCIe Network Card5,020$359Compare

All Network Cards · JSON

Cite this page: Hardware Spec Index, “Tessarix NX-9921 Pro Dual-Port 25GbE SFP28 PCIe Network Card”, https://vextor7.com/item/37527707 (accessed 2026-10-24).