Wifi 6 vs wifi 7 is a comparison between two generations of the wireless standard that home routers, phones and laptops use, and the main differences are wider channels, a denser modulation scheme and the ability to use several radio bands at once.
It sits alongside the broader gadget buying guide, which covers how to weigh specifications of every kind.
Generation numbering
The Wi-Fi Alliance, the industry group that certifies Wi-Fi products, labels its generations with simple numbers. According to its technology overview, Wi-Fi 5 was introduced in 2014 and Wi-Fi 6 in 2018, and Wi-Fi 7 followed in 2024. The numbers matter because a router and a device only use the newest features when both sides support them. A Wi-Fi 7 router still talks to an older phone, but it does so using the older phone’s generation.
The same page notes that Wi-Fi 5 products were mostly dual-band, meaning they used the 2.4 GHz and 5 GHz bands. Everything since has been about squeezing more out of those bands and, later, adding a third.
Wi-Fi 6 changes
The Wi-Fi Alliance says Wi-Fi 6 delivers higher data rates, greater capacity, stronger performance in dense environments and improved power efficiency. Its listed features explain how:
- OFDMA shares a channel between several devices, which raises network efficiency and lowers latency.
- Multi-user MIMO lets an access point handle more devices at the same time.
- Target wake time improves network efficiency and device battery life.
- 1024 QAM encodes more data in the same amount of spectrum.
These features are described on the Wi-Fi Alliance’s technology page. The common thread is efficiency: Wi-Fi 6 is aimed less at one device’s peak speed and more at keeping a crowded network responsive, such as a home with many phones, speakers and cameras connected at once.
Wi-Fi 6E and the 6 GHz band
The Wi-Fi Alliance says Wi-Fi 6 also introduced Wi-Fi in the 6 GHz band (the Wi-Fi 6E extension), in addition to the 2.4 GHz and 5 GHz bands available in previous generations. On January 7, 2021, the Alliance announced that certification for Wi-Fi 6E was available for devices operating in the 6 GHz spectrum, as part of Wi-Fi CERTIFIED 6, so 6E is best read as Wi-Fi 6 with access to extra spectrum rather than a separate generation. The announcement is on the Wi-Fi Alliance newsroom.
Regulators decide whether the band is available. In April 2020 the US Federal Communications Commission adopted rules that make 1,200 megahertz of spectrum in the 6 GHz band, from 5.925 to 7.125 GHz, available for unlicensed use. In the same announcement the FCC said opening the band would increase the amount of spectrum available for Wi-Fi by nearly a factor of five. The details are in the FCC announcement.
The FCC rules authorise indoor low-power operation over the full 1,200 megahertz, and standard-power devices in 850 megahertz of it. Rules differ by country, so whether a given 6E or Wi-Fi 7 device can use the band depends on where it is sold and used.
Wi-Fi 7 additions
The Wi-Fi Alliance introduced Wi-Fi CERTIFIED 7 on January 8, 2024. According to its press release, the headline features are:
- 320 MHz channels, available in countries that make the 6 GHz band available to Wi-Fi, which are wider than the largest channel size of the previous generation.
- Multi-Link Operation, which lets a device transmit and receive data simultaneously over multiple links for increased throughput, reduced latency and improved reliability.
- 4K QAM, which achieves 20% higher transmission rates than 1024 QAM.
The Alliance’s later overview page adds that Wi-Fi 7 enhances performance across the 2.4 GHz, 5 GHz and 6 GHz bands, and that its 320 MHz channels in the 6 GHz band provide twice the throughput of Wi-Fi 6. The widest channels need the 6 GHz band, so a Wi-Fi 7 device in a market without that band cannot use them.
Wi-Fi 6 and Wi-Fi 7 side by side
| Feature | Wi-Fi 6 | Wi-Fi 7 |
|---|---|---|
| Introduced | 2018 | 2024 |
| Modulation | 1024 QAM | 4K QAM |
| Channel width mentioned by the Alliance | 160 MHz | 320 MHz |
| Bands | 2.4 GHz and 5 GHz (6 GHz with Wi-Fi 6E) | 2.4 GHz, 5 GHz and 6 GHz |
| Multi-link feature | Not listed | Multi-Link Operation |
The table summarises the feature lists on the Wi-Fi Alliance technology overview, where Wi-Fi 6 is described as using 160 MHz channels and 1024 QAM.
Reading product specifications
Marketing sheets often list a generation name without saying which of its features the product includes. Because the Wi-Fi Alliance describes Wi-Fi 7’s widest channels as depending on the 6 GHz band, a router sold for a market without that band may offer the generation’s other features but not the widest channels. Likewise, a phone that supports Wi-Fi 6 but not Wi-Fi 6E will use the 2.4 GHz and 5 GHz bands even when paired with a newer router.
The useful questions are therefore which bands a device supports, which channel widths it can use, and whether the feature in question, such as Multi-Link Operation, is listed in the manufacturer’s own documentation. Certification marks from the Wi-Fi Alliance indicate that a product passed interoperability testing for a generation, which is a different claim from delivering the generation’s top speed in a particular home.
Adoption outlook
In its January 2024 announcement the Wi-Fi Alliance said more than 233 million Wi-Fi 7 devices were expected to enter the market in 2024, growing to 2.1 billion devices by 2028. It named smartphones, PCs, tablets and access points as the earliest adopters. That is a forecast cited by the Alliance, not a measured figure, but it signals that most new hardware will eventually ship with Wi-Fi 7.
For a household, the practical effect is timing. Devices bought today may support Wi-Fi 6, 6E or 7, and the router only unlocks a feature when each device in the conversation supports it. Coverage across a larger home is a separate problem from the generation number, and a mesh wifi system is one way to approach it.
Low-power design shows up across gadgets, not only in radios: the page on how e-ink works covers a display technology where power use is a central design goal, much as target wake time is for Wi-Fi 6 devices.
Frequently asked questions
Is Wi-Fi 6E a different generation from Wi-Fi 6?
Show answer
No. The 6 GHz band arrived with Wi-Fi 6E, which the Wi-Fi Alliance introduced as part of Wi-Fi CERTIFIED 6; its 6E certification, introduced in January 2021 as part of Wi-Fi CERTIFIED 6, covers devices operating in that band.
Do Wi-Fi 7 devices work with older routers?
Show answer
Yes, a newer device can connect to an older router, but it can only use the features that both sides support.
Why do 320 MHz channels need the 6 GHz band?
Show answer
The Wi-Fi Alliance says 320 MHz channels are available in countries that make the 6 GHz band available to Wi-Fi, which is why the widest channels depend on local rules for the band.
Does Wi-Fi 7 make my internet plan faster?
Show answer
A Wi-Fi generation affects the wireless link inside the home. The speed of the internet service itself is set by the provider and the plan.
