“Wi-Fi 6”, “Wi-Fi 6E” and “Wi-Fi 7” are generation names. The Wi-Fi Alliance introduced them in 2018 so people would not have to decode IEEE labels like 802.11ax: Wi-Fi 6 is 802.11ax, Wi-Fi 5 is 802.11ac and Wi-Fi 4 is 802.11n. Wi-Fi 7 is the name for devices built on 802.11be.
A newer number means newer features and, for 6E and 7, access to the 6 GHz band. But a feature only helps a connection when the router and the device at the other end both support it. That second point is the one most buying advice skips, and it is usually the one that decides whether an upgrade changes anything for you.
The generations at a glance
| Name | IEEE standard | Bands | Headline additions |
|---|---|---|---|
| Wi-Fi 4 | 802.11n-2009 | 2.4 GHz and 5 GHz | Works in both bands |
| Wi-Fi 5 | 802.11ac-2013 | 5 GHz | Wider channels and higher-order modulation on 5 GHz |
| Wi-Fi 6 | 802.11ax | 2.4 GHz and 5 GHz | OFDMA, MU-MIMO, target wake time, 1024-QAM, 160 MHz channels |
| Wi-Fi 6E | 802.11ax | Adds 6 GHz | Wi-Fi 6 features extended into the 6 GHz band |
| Wi-Fi 7 | 802.11be | 2.4, 5 and 6 GHz | 320 MHz channels (6 GHz only), multi-link operation, 4K QAM |
| Wi-Fi 8 | 802.11bn (draft) | Not final | Described as adding ultra-high reliability; still in development |
Each row is explained below.
Why the names exist
The IEEE writes the technical standards and names them with letters: 802.11n, 802.11ac, 802.11ax. Those letters say nothing about which is newer. The Wi-Fi Alliance, the industry group that certifies devices, introduced the numbered names in October 2018 so people could tell which Wi-Fi a device supports, and intended the numbers to be shown in device interfaces as well as on packaging.
What each generation changed
Wi-Fi 4 (802.11n)
Wi-Fi 4 works in both the 2.4 GHz and 5 GHz bands. A device that supports only Wi-Fi 4 still connects to a newer router, but only with Wi-Fi 4 capabilities.
Wi-Fi 5 (802.11ac)
Wi-Fi 5 is a 5 GHz standard. A dual-band “Wi-Fi 5 router” still offers a 2.4 GHz network, but that side of the router runs the older Wi-Fi 4 technology. Compared with Wi-Fi 4, Wi-Fi 5’s maximum rates are quoted for wider channels (80 MHz and 160 MHz) and denser modulation (256-QAM), which is where most of its headline speed comes from (see the speed table below).
Wi-Fi 6 (802.11ax)
Wi-Fi 6 brought its features to both 2.4 GHz and 5 GHz. Its headline features are largely about efficiency on busy networks:
- OFDMA splits a channel so the router can serve several devices in one transmission instead of one at a time.
- MU-MIMO lets the router send data to more than one device at once.
- Target wake time (TWT) schedules when devices wake to talk to the router, which helps battery life.
- 1024-QAM encodes more data in each transmission, which raises throughput.
- 160 MHz channels give a single connection more spectrum to work with.
Wi-Fi 6E
Wi-Fi 6E is not a new standard. It is the Wi-Fi Alliance name for Wi-Fi 6 operating in the 6 GHz band. If a device says only “Wi-Fi 6”, assume it cannot use 6 GHz unless its specifications list the band.
How much 6 GHz spectrum is available depends on the country. The rules, and how the three bands differ in range, congestion and device support, are covered in 2.4 GHz vs 5 GHz vs 6 GHz.
Wi-Fi 7 (802.11be)
Wi-Fi 7 works across 2.4, 5 and 6 GHz and adds three headline features:
- 320 MHz channels, twice the widest Wi-Fi 6 channel. They exist only in the 6 GHz band and only in countries that make 6 GHz available to Wi-Fi.
- Multi-link operation (MLO), which lets a device send and receive over more than one link at the same time.
- 4K QAM, which the Wi-Fi Alliance says achieves 20% higher transmission rates than Wi-Fi 6’s 1024-QAM.
Which of these your devices actually support varies a lot. The Wi-Fi 7 explainer covers how MLO works and what to check.
Wi-Fi 8 (in development)
As of October 2026, Wi-Fi 8 is not a finished standard. The Wi-Fi Alliance describes it as adding ultra-high reliability, with higher throughput, lower latency and lower access-point power use compared with Wi-Fi 7. The matching IEEE project, P802.11bn (“Ultra High Reliability”), reached draft 2.0 in September 2026, and the IEEE timeline predicts final approval in March 2028. Those are predictions, not commitments, so treat “Wi-Fi 8” product claims made before the standard is final with caution.
Why the speed numbers mislead
Every generation is advertised with a maximum speed. Those figures are theoretical link rates: the most data the radio could carry under one specific combination of channel width, modulation and number of spatial streams (parallel data paths between the two devices’ antennas). Intel’s reference table shows how much the conditions matter:
| Standard | Channel width | Modulation | Streams | Theoretical maximum |
|---|---|---|---|---|
| 802.11n | 40 MHz | 64-QAM | 3 | 450 Mbps |
| 802.11ac | 80 MHz | 256-QAM | 2 | 866.7 Mbps |
| 802.11ac | 160 MHz | 256-QAM | 2 | 1.73 Gbps |
| 802.11ax | 160 MHz | 1024-QAM | 2 | 2.4 Gbps |
The same pattern holds for Wi-Fi 7. The 46 Gbps figure often quoted for it assumes 16 spatial streams and 320 MHz channels, and Juniper’s documentation says it does not expect devices with 16 streams. Real laptop and phone adapters are rated far lower; the Wi-Fi 7 explainer gives an example.
Why sources disagree on dates
You will see Wi-Fi 6 dated to 2018, 2019 or 2021. They describe different events. The Wi-Fi Alliance announced the Wi-Fi 6 name in October 2018, while the IEEE amendment it is based on was completed as 802.11ax-2021.
Wi-Fi 7 followed the same pattern. Wi-Fi Alliance certification launched in January 2024, before the IEEE approved 802.11be-2024 on 26 September 2024 and published it in July 2025. In other words, Wi-Fi 7 certification began before the IEEE standard was formally approved.
Security comes with the newer generations
WPA3 support has been required in all new Wi-Fi CERTIFIED devices since 2020, and WPA3 is mandatory in the 6 GHz band. A 6 GHz network therefore always uses WPA3. If an older device cannot join a network set to WPA3 only, the security mode is a likely cause. WPA3 transition mode lets WPA2 and WPA3 devices connect to the same network.
What to check on your own devices
Wi-Fi CERTIFIED products are tested for backward compatibility, so a Wi-Fi 4 tablet will still join a Wi-Fi 7 router. It will not gain Wi-Fi 7 features by doing so.
Before you upgrade:
- Find the generation of the devices you use most. Look in the phone or laptop specifications for “Wi-Fi 6E”, “Wi-Fi 7” or the 802.11 letters. Those devices decide which router features you can actually use.
- Check for 6 GHz support on both ends. Using 6 GHz needs a Wi-Fi 6E or Wi-Fi 7 router, a Wi-Fi 6E or Wi-Fi 7 device, and a country that allows 6 GHz Wi-Fi.
- Compare against your internet plan. If your plan is slower than what your current Wi-Fi already delivers near the router, a newer generation will not raise your internet speed.
- Keep older devices in mind. Some smart-home devices connect only on 2.4 GHz (the bands guide has examples). They keep their own capabilities whatever router you buy.
Ready to pick a router? How to choose a Wi-Fi router turns these checks into a decision, and Wi-Fi 6E vs Wi-Fi 7 covers the newest upgrade choice. For everything else Wi-Fi, start at the Wi-Fi hub.