The Pain Point: Small Packets, Hidden Bottleneck

When engineers run a firewall, router, or edge gateway on an industrial mini pc, large packet throughput usually looks fine — until 64-byte packets (DNS, NTP, VPN, IoT) pile up. A NIC that looks flawless at 2.5GbE on iperf can still drop PPS, add jitter, or stall a dual lan forwarding path under sustained small packet load.

Where This Scenario Hits Your Deployment

This load is typical of a fanless industrial mini pc placed at the network edge: a retail store POS network, a warehouse VLAN segment, or a multi office VPN gateway. Every rj45 connector in the build has to keep forwarding small frames without pauses, because a single stall can reset active sessions and make the whole site feel slow, even when link speed looks healthy.

i225 vs i226: What Changes in the Silicon

Both controllers deliver 2.5GbE over a standard RJ45 connector. The difference appears under small packet pressure. Early i225 revisions carried known PPS-related issues that needed firmware updates to stabilize; i226 was introduced as refreshed silicon with corrected receive path behavior and steadier performance across packet sizes.

Choosing the Right NIC for Your Build

Shenzhen Helor Cloud Computer Co.,Ltd. provides mini PC solutions for network gateways and firewall applications. When selecting Intel i225 or i226 NICs, evaluate actual workloads.