The short answer
In most homes, any WiFi 6 router gives you the jump that matters. WiFi 7 gives more, but you only notice under very specific conditions: many compatible devices, a gigabit connection, and being within range of the 6 GHz band.
If you’re buying for home today, the real decision isn’t 6 versus 7 but whether you need more coverage. A good cheap repeater often beats a WiFi 7 router put in the wrong corner.
What changes with WiFi 6
WiFi 6 is the standardisation of 802.11ax. It doesn’t add new bands: it still uses 2.4 GHz and 5 GHz. What it improves is efficiency in busy networks.
| Improvement | How it affects you |
|---|---|
| OFDMA | Many devices at once without interfering with each other |
| BSS coloring | Fewer collisions between neighbouring networks |
| Bidirectional MU-MIMO | The router also sends to several devices at once |
| Target Wake Time | IoT devices sleep and use less power |
| Maximum speed | Higher, but it depends on the hardware |
OFDMA is the one you notice most in a real home. On the 2.4 GHz band, with dozens of IoT devices competing, it splits the channel into subchannels and transmits to several at once instead of taking turns.
TWT matters more than it seems in home automation: an ESP32 with TWT enabled sleeps between transmissions instead of keeping the radio on, and that reduces both power consumption and disconnections.
What WiFi 7 adds
The Wi-Fi Alliance defines WiFi 7 over the IEEE 802.11be standard: 320 MHz channels in the 6 GHz band, multi-link operation and 4096-QAM modulation. It’s the reference to check when a spec sheet uses odd names.
WiFi 7 is 802.11be. It adds the 6 GHz band, with up to seven extra 20 MHz channels and widths of up to 320 MHz.
| Advantage | Requirement |
|---|---|
| 6 GHz band without congestion | Compatible router and clients |
| Lower latency | Heavy congestion on 2.4 and 5 GHz |
| MLO: link on several bands at once | WiFi 7 router and client |
The 6 GHz band is key, and it has a limit: no cheap home router uses it, and the range drops considerably compared with 5 GHz. That means 6 GHz is for the same room, not for the whole house.
MLO is the interesting one in the medium term. It lets a device keep simultaneous links on 2.4 and 5 GHz and take the best of each. It’s the technical answer to the problem of devices that switch band and disconnect.
Which router to choose per case
| Situation | What suits you |
|---|---|
| Small home, under 90 m² | WiFi 6 with good antennas |
| Medium home, 90 to 140 m² | WiFi 6 with a 2-node mesh system |
| Large home or several floors | 3-node mesh, WiFi 6 or 7 |
| Lots of IoT devices | Router with TWT and mixed WPA2 |
| 1 Gbps fibre or more | WiFi 6 with a 2.5 Gbps port |
| Still no coverage in a room | A second node, not a more powerful router |
Criteria that matter more than the number
When you compare two routers, look at this before the WiFi 7 label on the box:
- Antennas and power. A router with two good-gain antennas reaches further than one with four weak ones.
- 2.5 Gbps port. If you have 1 Gbps fibre, a 1 Gbps port limits you in scenarios with a network drive or local traffic.
- RAM and storage. They determine how many clients it handles without crashing. See how many devices a router can handle.
- OpenWrt available. If you intend to change the configuration, check that the device has open firmware. That’s what will let you do the full network configuration.
- Support for WPA2 and WPA3 at the same time. Essential if you have older home automation devices.
The typical mistake: chasing the WiFi number and nothing else
The WiFi 7 label measures the router’s maximum capacity under ideal lab conditions: a compatible client at one metre, no walls, no neighbours. In a real home, coverage and interference dominate any difference between WiFi 6 and WiFi 7.
That’s why you should measure before spending more. The method is in how to measure your home WiFi signal, and if the signal arrives fine but coverage doesn’t, the answer is a mesh system rather than a more expensive router.
Backwards compatibility
No WiFi 6 or 7 device breaks the previous ones. A modern router stays compatible with WPA2 and WPA3 devices, which is why the usual setup is mixed WPA2/WPA3 during transitions.
That has an important nuance in home automation: some older devices don’t support WPA3 and others don’t support WPA2. If you enable only WPA3, they stay out; if you enable only WPA2, you lose modern protection. The mixed option resolves both. We cover it in detail in WiFi password, WPA3 and WPS.
Quick checklist
- WiFi 6 as a minimum; WiFi 7 only if you have plenty of 6 GHz clients.
- Antennas and power ahead of the standard’s label.
- A 2.5 Gbps port if your fibre is 1 Gbps or more.
- OpenWrt available if you’re going to configure things.
- WPA2 and WPA3 at the same time for the IoT devices.
- Coverage measured before buying.
Sources and next step
If the real problem is that the signal doesn’t get through, a more powerful router won’t help: look at a WiFi repeater or a mesh system. To understand why the bands behave like this, start with 2.4 GHz or 5 GHz.