Collection: Wired Networking

Which wired networking tier do you actually need?

Most PC builders treat wired networking as an afterthought, then wonder why a fast NVMe drive and a gigabit-plus internet plan still feel bottlenecked. The tiers differ in more than headline speed. Gigabit (1GbE) tops out around 940 Mbps of real throughput, which is about 115 MB/s. That is fine for gaming, streaming and browsing, because game traffic is tiny and latency matters far more than bandwidth. It becomes the ceiling the moment you move large files to a NAS or run a fast NBN plan.

2.5GbE is the sweet spot for most current builds. It runs over the Cat5e cabling already in most walls, delivers roughly 280 MB/s, and the silicon runs cool. 5GbE is a niche middle step. 10GbE gives around 1.1 GB/s, which is enough to saturate a SATA SSD array or a decent NAS, but the controllers draw serious power and need airflow. Diminishing returns hit hard after 2.5GbE unless you move big files daily, edit video off network storage, or run a home lab.

Lower ping comes from a stable, well-driven link, not a faster tier. A 10GbE card will not drop your in-game latency compared with a good 2.5GbE port.

Upgrading and technical nuances

The controller matters as much as the speed label. Most mainstream Motherboards on AM5 and LGA1851 ship with 2.5GbE. Intel's I226-V is generally the better-behaved option, with mature drivers, solid offloading and fewer odd link-negotiation quirks. Realtek's 2.5GbE parts are cheaper and fine for most people, but they have had a history of driver fussiness under Linux and in some virtualisation setups. If you run Proxmox, TrueNAS or pfSense, check controller support before you commit.

For 10GbE, you are choosing between 10GBASE-T (RJ45) and SFP+ (fibre or DAC). RJ45 is convenient and reuses copper, but the controllers and transceivers run hot. SFP+ with a direct attach copper cable uses far less power and adds less latency, since it skips the heavy signal processing that BASE-T needs. If both ends sit in the same room, SFP+ DAC is the smarter choice. Look at Intel X550 and X710 families, or Marvell AQtion-based cards, for 10GbE adapters.

Watch your PCIe lanes. A 10GbE card typically wants an x4 slot at Gen3 or better. On many boards the lower full-length slot is wired through the chipset and may share bandwidth with M.2 slots, so you might disable a drive without realising. Check the manual before you populate everything. A fast Solid State Drive (SSD) is pointless as a network target if the NIC slot is starving it.

On the switch side, unmanaged gear like the TP-Link TL-SG series covers most homes. Step up to managed or Omada-style switches only if you want VLANs, link aggregation or per-port monitoring. Plenty of "multi-gig" switches have just a couple of 2.5GbE ports and the rest at 1GbE, so count ports carefully.

Cabling is where people get caught. Cat5e handles 2.5GbE to 100 metres, Cat6 handles 10GbE up to about 55 metres, and Cat6a handles 10GbE to the full 100. Avoid copper-clad aluminium cable, which often fails to hold its rated speed. Quality Cables & Connectors with pure copper conductors are cheap insurance.

Practical things to check before buying

Start with physical fit. A PCIe NIC needs a free slot, and a large Graphics Card / GPU can cover the lower slots with its cooler, leaving you with no usable x4 slot. Measure it up, or check slot spacing on the board before you buy. Low-profile brackets are usually included, but confirm for compact builds.

Thermals matter for 10GbE. A BASE-T card can idle at 60 to 70 degrees in a stagnant case, and throttling shows up as dropped links or speed negotiation falling to 1GbE. Good front-to-back airflow from your Computer Cases and a spare intake fan from Fans, Heatsinks & Cooling over the card's heatsink usually sorts it. Don't tuck a 10GbE card directly under a hot GPU exhaust.

Check the other end of the cable too. Your router's LAN ports, switch and NAS all need to match the speed you're paying for. A 2.5GbE PC plugged into a 1GbE switch runs at 1GbE, full stop. If you're on a fast NBN plan, confirm your router has a 2.5GbE WAN or LAN port, or the plan's headroom goes to waste.

Finally, think about Wi-Fi fallback. Many modern boards include Wi-Fi alongside Ethernet, but wired networking stays more stable for gaming, streaming and large transfers. If you're buying a pre-built from Computers, check the spec sheet, since some budget systems still ship with 1GbE only.

Brands and local warranty

For switches, routers and adapters, TP-Link is the volume leader in Australia with a wide range from basic unmanaged switches to Omada managed gear. Netgear, Ubiquiti, ASUS, D-Link and Zyxel all have strong lineups, and MikroTik is popular with tinkerers who want serious features cheaply. For PCIe adapters, Intel-based cards remain the safest bet for driver support, with ASUS and TP-Link covering the 2.5GbE and 10GbE consumer end. You can browse the full range under Networking.

Local warranty matters more than people expect. Switches and NICs often fail in subtle ways, like dropping packets or negotiating down to lower speeds, and diagnosing that is painful enough without shipping the unit overseas. A genuine Australian warranty means local RMA handling, Australian Consumer Law protections, and a retailer you can actually call. Grey imports can look cheaper but leave you without that backup.

Frequently asked questions

Is 2.5GbE worth it over gigabit?

Yes, if you move large files or have an NBN plan above 1000 Mbps. The cost difference on modern boards and switches is small, and Cat5e cabling already supports it. For gaming alone, you won't notice a difference.

Do I need Cat6a for 10GbE?

Not always. Cat6 works to about 55 metres, which covers most homes. Cat6a is worth it for longer runs or in-wall cabling you won't want to replace later.

Can I add a network card to any motherboard?

Almost any board with a free PCIe slot will work, but check the slot's lane count and whether it shares bandwidth with M.2 storage. A 10GbE card in an x1 slot may not reach full speed.

Will a faster network card lower my ping?

No. Ping depends on your ISP, routing and server distance. A better NIC and clean cabling reduce local jitter and dropped packets, but the gains are small for online gaming.

Is Intel really better than Realtek for Ethernet?

Intel controllers generally have more mature drivers and better behaviour in virtualisation and Linux. For a typical Windows gaming PC, Realtek 2.5GbE works fine.