Dual 10GbE · SFP+ · 10GBASE-T · Network Appliance

Mini-ITX Motherboards with Multiple 10GbE Ethernet Ports

Choose a multi-10GbE platform by traffic profile, media, PCIe bandwidth, packet-processing load, storage path, software features, and sustained thermals.

  • 10 Gb/s per port1.25 GB/s raw line rate
  • Dual 10GbE20 Gb/s aggregate link capacity
  • PCIe Gen3 x4~31.5 Gb/s before PCIe protocol overhead
Build the Traffic Budget Review My 10GbE Requirements
Mini-ITX motherboard with multiple 10GbE Ethernet ports for firewall storage virtualization and edge networking

Traffic Budget

Start with Required Throughput in Each Direction, Not the Number of Ports

A 10GbE link carries 10 Gb/s, or 1.25 GB/s of raw line-rate data before Ethernet, IP, TCP/UDP, storage, encryption, or application overhead. Two ports provide 20 Gb/s of aggregate link capacity, but the system must still process that traffic.

Workload Traffic Question What Usually Becomes the Limit
Firewall / Router Must 10 Gb/s enter one port and leave the other after NAT, VPN or inspection? CPU cycles, packet rate, encryption, memory traffic and driver queues
NAS / Storage Is one 10GbE client enough, or must both ports move storage traffic simultaneously? Drive array, filesystem, cache, PCIe sharing and write thermals
Capture / Vision How many cameras or sensors transmit concurrently, and where is the data stored or processed? Ingress bandwidth, memory copies, packet capture, storage and accelerator path
Virtualization How much traffic crosses virtual switches, storage networks and VM boundaries? vSwitch processing, queues, IOMMU grouping and CPU scheduling

SFP+ · DAC · Fiber · 10GBASE-T

Choose the Physical Media Before Locking the Port Layout

Media Useful Reference Best Fit Release Check
SFP+ DAC 10 Gb/s link · short equipment-to-equipment connection Rack, appliance or nearby-switch links where removable copper DAC is preferred Approved DAC, peer compatibility, bend radius, cage access and temperature
SFP+ Fiber Optic-dependent reach and wavelength Longer links, electrical isolation between equipment, structured fiber networks Exact optic, fiber type, peer equipment, optical budget and operating temperature
10GBASE-T IEEE 802.3an · up to 100 m on suitable Cat 6A channel Existing RJ45 copper infrastructure and familiar field service Cable category, PHY heat, magnetics, EMI, auto-negotiation and enclosure airflow

NIC-to-CPU PCIe Budget

Verify the Electrical PCIe Width Before Expecting Dual-Port Line Rate

Two 10GbE ports can require 20 Gb/s of one-way aggregate link capacity before overhead. The NIC path therefore matters as much as the Ethernet connectors.

PCIe Link Approx. Payload Signaling After Line Encoding 10GbE Meaning
PCIe Gen2 x4 ~16 Gb/s before PCIe protocol overhead Below the 20 Gb/s raw aggregate of two 10GbE links
PCIe Gen3 x4 ~31.5 Gb/s before PCIe protocol overhead Provides practical headroom for a dual-10GbE NIC path
PCIe Gen4 x4 ~63 Gb/s before PCIe protocol overhead Useful when NIC, NVMe or accelerator traffic shares a faster platform fabric

Packet Rate · RSS · Interrupt Load

Small Packets Can Saturate the CPU Before They Saturate the Link

At minimum-size Ethernet frames, one 10GbE link is roughly 14.88 million packets per second at line rate when preamble and inter-frame gap are included. Two ports can therefore approach 29.76 Mpps in one direction.

RSS and Queue Count

Receive Side Scaling can distribute flows across CPU cores when the NIC, driver and operating system support the required queue layout.

Checksum and Segmentation Offloads

Checksum, TSO/GSO and related offloads can reduce CPU work, but their effect depends on traffic type and application path.

Jumbo Frames

A larger MTU can reduce packet-processing overhead for suitable storage or internal networks, but every device in the path must support the chosen MTU.

Measured Packet Profile

Test the packet-size mix, concurrent flows and bidirectional traffic expected in production instead of validating only large sequential transfers.

10GbE · NVMe · SATA

Storage Must Deliver Data at the Rate the Network Can Carry It

One 10GbE link represents 1.25 GB/s of raw line-rate capacity. A SATA 6 Gb/s link is below that raw network rate, so a single SATA path cannot supply a full 10GbE raw stream by itself.

Storage Path Reference What to Validate
SATA 6 Gb/s 6 Gb/s link rate before storage-protocol overhead Array width, controller, filesystem and sustained write speed
NVMe / PCIe Potentially above one 10GbE link Shared PCIe lanes, SSD thermals, queue depth and simultaneous NIC traffic
Dual 10GbE Storage 2.5 GB/s raw aggregate link capacity Whether storage, memory and CPU can sustain both network paths together

Review Mini-ITX Storage Architecture for 10GbE Workloads →

VLAN · LACP · SR-IOV · IOMMU

Confirm the Network Feature in the Controller, Driver and OS Together

Feature Reference What Must Be Confirmed
VLAN IEEE 802.1Q NIC driver, OS configuration, switch policy and MTU
Link Aggregation IEEE 802.1AX / LACP Hash policy, peer switch, failover behavior and whether one flow can use more than one link
SR-IOV NIC/platform feature Exact controller, firmware, BIOS, IOMMU, hypervisor and guest-driver support
Passthrough IOMMU / VT-d platform path Device grouping, reset behavior, firmware and virtualization stack

NIC · PHY · Optic · Enclosure

Validate 10GbE After the Network Hardware Reaches Steady-State Temperature

10GBASE-T PHYs, SFP+ modules, NIC controllers, NVMe drives and CPUs can all add concentrated heat in a 170 × 170 mm Mini-ITX system.

Both Ports Active

Run simultaneous sustained traffic on both interfaces while the intended routing, storage or capture workload is active.

Media Temperature

Monitor copper PHY or SFP+ module temperature in the final enclosure, not only on an open bench.

Link Recovery

Test cable removal, peer restart, link renegotiation and driver recovery without leaving interfaces in an unusable state.

Error Counters

Record CRC/FCS errors, dropped packets, retransmissions, PCIe errors and thermal throttling during the validation run.

Starting Platforms

Choose Integrated Dual SFP+ or a Replaceable PCIe NIC Path

Starting Platform Use It When Confirm Before Release
Dual 10GbE SFP+ Mini-ITX Motherboard Two integrated SFP+ links fit the network and mechanical design NIC controller, PCIe path, approved media, driver, CPU load, power and cooling
LGA1700 Mini-ITX with PCIe Expansion A replaceable 10GbE NIC or controller-specific card is preferred Electrical lane width, BIOS, NIC dimensions, slot power, airflow and chassis clearance

10GbE Platform Review

Send the Traffic Profile and Media Choice

Provide port count, SFP+ or RJ45, packet sizes, traffic direction, firewall/storage/virtualization role, CPU target, PCIe devices, OS, power, enclosure, cooling, quantity and validation target.

Submit 10GbE Requirements

FAQ

Multiple 10GbE Mini-ITX FAQ

Can two 10GbE ports provide 20 Gb/s of application throughput?

Not automatically. They provide 20 Gb/s of aggregate link capacity. PCIe, CPU, packet size, software, storage, media and thermals determine useful throughput.

Is PCIe Gen3 x4 enough for dual 10GbE?

PCIe Gen3 x4 carries about 31.5 Gb/s after line encoding and before PCIe protocol overhead, giving practical headroom over two 10GbE links. Confirm the actual negotiated width and shared resources.

SFP+ or 10GBASE-T for an industrial appliance?

Choose from the installed cable plant, reach, power, heat, connector access and service model. 10GBASE-T supports up to 100 m on a suitable Cat 6A channel; SFP+ allows qualified DAC or fiber media.

Why can a firewall fail to reach 10 Gb/s even with a 10GbE NIC?

Routing, NAT, VPN, IDS/IPS and small-packet processing can become CPU-bound. Test the real packet profile, ruleset, encryption and both-port traffic instead of relying on NIC line rate.

Bandwidth Without Compromise for Industrial-Grade Applications

Our platforms are designed with multiple 10G Ethernet ports, delivering dependable line-rate performance across diverse link conditions, topologies, and workloads, ensuring high-speed networking whether you’re building smart factories, edge AI nodes, or secure control systems.