Question: Which Ethernet or WiFi adapters are active?
Get-NetAdapterCable guide
Cat 6 vs Cat 7 vs Cat 8 Ethernet Cable
Choosing a cable is easier when you also check the port speed. This guide explains Cat 6, Cat 7, Cat 8, RJ45 LAN ports and why a cable alone cannot make a slow plan faster.
Quick Answer
For most homes, Cat 6 is the best value for internet speed tests, streaming, gaming and everyday broadband. Cat 6a is a good upgrade for longer 10 Gbps wiring. Cat 7 is often unnecessary for home internet. Cat 8 is mainly useful for short high-speed links when the router, switch and computer ports support very high speeds.
If your internet plan is 100 Mbps or 1 Gbps, buying Cat 8 will not automatically increase speed. Your final speed depends on the internet plan, modem or ONT, router, LAN port, network adapter and the cable together.
The slowest part sets the speed
A 10 Gbps cable cannot pass 10 Gbps if your router port or laptop Ethernet adapter is only 1 Gbps or 100 Mbps.
Cat 6, Cat 7 and Cat 8 Compared
| Cable type | Best use | Practical home note |
|---|---|---|
| Cat 6 | 100 Mbps, 300 Mbps, 500 Mbps and 1 Gbps home internet. It can also handle faster local network use at shorter distances. | Best value for most users. Works with common RJ45 router and PC ports. |
| Cat 6a | Better choice for long 10 Gbps runs, offices, wall wiring and future-ready home networks. | More shielding and headroom than Cat 6, usually easier to justify than Cat 7. |
| Cat 7 | Shielded cabling where interference control matters. | Often overkill for home internet and sometimes confusing because sellers market it heavily. |
| Cat 8 | Short, high-speed links for advanced network equipment, racks, servers or very fast switches. | Not needed for a 100 Mbps or normal 1 Gbps broadband plan unless your ports also support higher speed. |
Ethernet Port Speed Matters
The cable is only one part of the connection. Your router LAN port, modem or ONT port, switch port and computer network adapter must all support the same speed. If one part is slower, the connection will run at the slower speed.
- 100 Mbps port: Often called Fast Ethernet. It can limit a high-speed plan to around 100 Mbps.
- 1 Gbps port: Common on many routers, laptops and desktop PCs. Good for most home broadband plans.
- 2.5 Gbps port: Useful for faster fiber plans, newer routers and newer motherboards.
- 10 Gbps port: Used for advanced home networks, offices, NAS devices, servers and high-speed switches.
If Windows or your router shows a 100 Mbps link speed while you expect 1 Gbps, the cause may be an old cable, damaged cable clip, loose connector, a 100 Mbps port, old network adapter, or router setting.
Which Cable Should You Buy?
| Your connection | Recommended cable | Why |
|---|---|---|
| 100 Mbps internet plan | Cat 5e or Cat 6 | Cat 6 is affordable and gives enough headroom. |
| 300 Mbps to 1 Gbps plan | Cat 6 | Best simple choice for home speed testing, streaming and gaming. |
| 1 Gbps to 2.5 Gbps network | Cat 6 or Cat 6a | Good balance of cost, compatibility and performance. |
| 10 Gbps wiring | Cat 6a | Better for longer stable runs when the ports support 10 Gbps. |
| Short advanced rack link | Cat 8 | Use only when your switch, router or server port can benefit from it. |
Best Cable for Gaming, Streaming and Speed Tests
For gaming and video calls, a stable Ethernet connection often feels better than WiFi because it can reduce drops, interference and random latency spikes. Cat 6 is usually enough. For streaming and downloads, the internet plan and router port matter more than the cable category once the cable is good quality.
To test properly, connect your computer directly to the router with a short Cat 6 cable, close background downloads and run the speed test again. Compare download speed, upload speed and ping, not only the biggest Mbps number.
Useful Windows Checks
Open PowerShell and use these checks if you want to see adapter information. The link speed depends on your adapter driver and the port it is connected to.
Question: What speed does Windows report for network cards?
wmic nic where netEnabled=true get name, speedEthernet Cable FAQs
Does Cat 8 increase internet speed?
Not by itself. Cat 8 can support very high network speeds, but your actual internet speed still depends on your plan, router, modem or ONT, network adapter and port speed.
Is Cat 7 better than Cat 6 for home internet?
Cat 7 can be more heavily shielded, but most home users do not need it. A good Cat 6 cable is usually enough for 100 Mbps, 300 Mbps, 500 Mbps and 1 Gbps plans.
Do I need Cat 8 for gaming?
No. Online gaming usually needs stable latency more than extreme bandwidth. A good Cat 6 Ethernet cable is normally enough for gaming, streaming and normal downloads.
Why does Ethernet show only 100 Mbps?
The cable may be damaged, one connector may be loose, the router port may be 100 Mbps, the PC adapter may be limited, or the cable may not have all pairs working correctly.
Can an old router port limit speed?
Yes. If the router LAN port is 100 Mbps, even a Cat 8 cable will connect at 100 Mbps. Check the router specification and the Windows adapter link speed.
What is the best Ethernet cable for a 1 Gbps plan?
Cat 6 is the practical choice for most 1 Gbps home internet plans. Cat 6a is useful if you are wiring long runs or planning for higher local network speeds.