Wired Ethernet vs Wi-Fi 7 mesh — what's actually better?
Wired wins every objective metric. The only question is whether you can run cable. After 22 years installing networks in homes, here's how I think about it.
The numbers — wired vs wireless
| Metric | Cat6 Ethernet | Wi-Fi 7 |
|---|---|---|
| Max throughput | 10 Gbps | 5-7 Gbps (theory), 1-2 Gbps (real) |
| Latency | < 1 ms | 3-15 ms |
| Stability under load | Constant | Drops when other devices use bandwidth |
| Interference from neighbors | None | Major in dense areas |
| Cost | $0.30/ft + $50/jack labor | $300-1,500 hardware |
For each TV in the house — what's the right call?
Main TV / home theater — ALWAYS Ethernet
This is the TV that has to work. 4K HDR, 4K Dolby Vision, surround sound — all need consistent bandwidth. Wired Ethernet is the only way to guarantee it. Cat6 cable handles 10 Gbps so you're future-proof for 15+ years.
Living room or den TV — Ethernet if you can
If the room is on the same floor as the router, or you have a basement to run cable through, wire it. If it's an upstairs bedroom and you'd have to fish cable through three walls, Wi-Fi 6E or 7 is fine.
Bedroom TVs — Wi-Fi is usually fine
You're typically watching one TV at a time in a bedroom, lower expectations on quality, and you don't want to tear up walls. Wi-Fi works.
Streaming sticks on portable TVs — Wi-Fi by definition
Roku Stick / Fire TV Stick / Apple TV mounted to a wall-mounted TV — running Ethernet to it is awkward. Some sticks have USB-Ethernet adapters if you want the wired path anyway.
How to run Ethernet without tearing up walls
- Use the attic: Drop cable down inside walls from above — usually 30 min per drop
- Use the basement: Run along basement ceiling, drill up into the floor of the room above
- Use a closet: If two rooms share a wall with a closet, run cable through the closet
- Use raceway: Surface-mount channel painted to match the wall — looks fine, no drywall work
- Use MoCA over coax: If your house is already wired for cable TV, MoCA 2.5 adapters turn coax into 2.5 Gbps Ethernet ($60/pair)
- Use Powerline as last resort: Plug into electrical outlets, get 500-1,000 Mbps. Works some of the time. Avoid if other options exist.
When Wi-Fi mesh is the right answer
- Renter who can't run cable
- House where the walls are concrete/brick and impossible to fish
- Roaming devices (phones, tablets, laptops) — these are wireless by nature
- Smart home gear scattered through the house