Hardware Spec Index

Tessarix NX-6521 Ultra 10GbE SFP+ PCIe Network Card

Network Cards · Tessarix · SKU NX6521-ULTRA · Released 2021 · Updated 2026-10-24

Key facts

Benchmark index4,852 (Network Cards scale)
Category rank#5,817
Street price$309
Power6 W
Performance per dollar15.70
Released2021

Specifications

BrandTessarix
ModelTessarix NX-6521 Ultra
Speed10GbE (10G)
Ports1× SFP+
Host interfacePCIe 3.0 x4
CablingDAC or optical transceiver
StandardSFF-8431 (10GBASE-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-4158 Prime Dual-Port 25GbE SFP28 PCIe Network Card5,591$479Compare
Quorvex NX-4414 Max 10GbE SFP+ PCIe Network Card3,024$129Compare
Strivon NX-8738 Prime 10GbE SFP+ PCIe Network Card5,264$419Compare
Strivon NX-2996 Ultra 10GbE SFP+ PCIe Network Card3,368$189Compare
Strivon NX-9536 Plus 2.5GbE RJ45 USB Adapter2,325$79Compare
Strivon NX-1884 Ultra 2.5GbE RJ45 PCIe Network Card2,329$99Compare

All Network Cards · JSON

Cite this page: Hardware Spec Index, “Tessarix NX-6521 Ultra 10GbE SFP+ PCIe Network Card”, https://vextor7.com/item/8513755 (accessed 2026-10-24).