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Wi-Fi 7 just got decidedly closer.
Today Broadcom announced a collection of its new Wi-Fi chips supporting the standard—all five of them, including the BCM67263, BCM6726, BCM43740, BCM43720, and BCM4398.
Don't let the boring names fool you—that's generally how Broadcom names its hardware components that power the Wi-Fi function inside fancy gadgets we use. So, this is excellent news for Wi-Fi fans.
While Broadcom is not the first chip maker that's boarded the Wi-Fi 7 bandwagon—Qualcomm already did that early this year—it's been the most prolific vendor on the Wi-Fi front.
Indeed, most existing Wi-Fi 6 and Wi-Fi 6E broadcasters have a Broadcom chip inside. According to Vijay Nagarajan, Broadcom's VP of Marketing, so far, the chipmaker has shipped one billion Wi-Fi 6/6E chips.
And the company's new round of Wi-Fi 7 chips to continue that momentum.
Broadcom’s Wi-Fi 7 approach: A complete set of chips
The new chips cover all aspects of the latest Wi-Fi standard, including different speed grades and hardware applications, on both the broadcasting and receiving ends.
Specifically, of the five, four are made for access points and one for Wi-Fi clients.
All flavors of Wi-Fi 7
Broadcom says all five chips feature the new 4096-QAM modulation and fully comply with IEEE and WFA Wi-Fi 7 specifications.
If you haven't heard of Wi-Fi 7 before, the extra content below will give you some quick highlights.
But the biggest takeaway on Wi-Fi 7 is that it has double the speed of Wi-Fi 6 and 6E with better efficiency that might also increase the range while lower network latency.
Extra: Wi-Fi 7's highlights
This portion of extra content is part of the explainer post on the new Wi-Fi 7 standard.
There are four areas where the new standard is better compared to the existing Wi-Fi 6 (and 6E).
1. The all-new 320MHz channel width
The first thing to note about Wi-Fi 7 is the new and much wider channel width, up to 320MHz, or double that of Wi-Fi 6/6E.
This new channel width is generally available on the 6GHz band, with up to three 320MHz channels. However, Wi-Fi 7 can also combine portions of the 6GHz and 5GHz bands to create this new bandwidth—more in the Multi-Link Operation section below.
Details of Wi-Fi channels can be found here, but the new channel width generally means Wi-Fi 7 can double the base speed, from 1.2Gbps per stream (160MHz) to 2.4Gbps per stream (320MHz).
So, in theory, just from the width alone, a 4x4 broadcaster 6GHz Wi-Fi 7 can have up to 9.6 Gbps of bandwidth—or 10Gbps when rounded up. But there's more to Wi-Fi 7's bandwidth below.
Wi-Fi 7 also supports double the partial streams, up to 16. As a result, technically, a 16-stream (16x16) Wi-Fi 7 6GHz band can deliver up to over 40Gbps of bandwidth, especially when considering the new QAM support below.
Like Wi-Fi 6 and 6E, initially, Wi-Fi 7 will be available as dual-stream (2x2) and quad-stream (4x4) broadcasters and dual-stream clients. In the future, the standard might have 8x8 broadcasters and single-stream or quad-stream clients.
Again, you need a compatible client to use the new 320MHz channel width. Existing clients will connect using 160MHz at best. In reality, the 160MHz will likely be the realistic sweet-spot bandwidth of Wi-Fi 7, just like the 80MHz in the case of Wi-Fi 6.
2. The 4K-QAM
QAM, short for quadrature amplitude modulation, manipulates the radio wave to pack more information in the Hertz.
Wi-Fi 6 supports 1024-QAM, which itself is already impressive. However, Wi-Fi 7 will have four times that, or 4096-QAM. Greater QAM means better performance for the same channel width.
As a result, Wi-Fi 7 will be much faster and more efficient than previous standards when working with supported clients.
Wi-F 7 vs. Wi-Fi 6/6E: The realistic real-world speeds
With the support for the wider channel width and higher QAM, Wi-Fi 7 is set to be much faster than previous standards on paper.
You might have read somewhere that Wi-Fi 7 is "up to 4.8 times faster than Wi-Fi 6," and hardware vendors will continue to combine the theoretical bandwidth of a broadcaster's all bands into a single colossal number—such as BE19000, BE22000, or BE33000—which is excellent for advertising.
Like always, these numbers don't mean much, and things are not that simple. In reality, a Wi-Fi connection generally happens on a single band at a time—that's always true for Wi-Fi 6E and older clients—and is also limited by the client's specs.
The table below summarizes what you can expect from Wi-Fi 7's real-world organic performance compared to Wi-Fi 6E when working on the 6GHz.
| Wi-Fi 6E | Wi-Fi 7 | |
| Max Channel Bandwidth (theoretical/top-tier equipment) | 160MHz | 320MHz |
| Channel Bandwidth (widely implemented) | 80MHz | 160MHz |
| Number of Available Channels | 7x 160MHz, or 14x 80MHz channels | 3x 320MHz, or 7x 160MHz channels, or 14x 80MHz channels |
| Highest Modulation | 1024-QAM | 4096-QAM |
| Max Number of Spatial Streams (theoretical on paper / commercially implemented) | 8 / 4 | 16 / 8 (estimate) |
| Max Bandwidth Per Stream (theoretical) | 1.2Gbps (at 160MHz) 600Mbps (at 80MHz) | ≈ 2.9Gbps (at 320MHz) ≈ 1.45Gbps (at 160MHz) |
| Max Band Bandwidth (theoretical on paper) | 9.6Gbps (8x8) | 46.1Gbps (16x16) |
| Commercial Max Band Bandwidth Per Band (commercially implemented) | 4.8Gbps (4x4) | 23Gbps (8x8), or 11.5Gbps (4x4) |
| Available Max Real-word Negotiated Speeds(*) | 2.4Gbps (via a 2x2 160MHz client) 1.2Gbps (via a 2x2 80MHz client) | ≈ 11.5Gbps (via a 4x4 320MHz client) ≈ 5.8Gbps (via a 2x2 320MHz client or a 4x4 160MHz client) ≈ 2.9Gbps (via a single stream 320MHz client or a 2x2 160MHz client) ≈ 1.45Gbps (via a single stream 160MHz client or a 2x2 80MHz client) |
| Available Clients (example) | 2x2 (Intel AX210) | 2x2 (Intel BE200 / Qualcomm NCM865) |
(*) The actual negotiated speed depends on the client, Wi-Fi 7 specs, and environment. Real-world sustained rates are generally much lower than negotiated speeds—capping at about two-thirds at best. Wi-Fi 6/6E has had only 2x2 clients. Wi-Fi 7 will also use 2x2 clients primarily, but it might have 4x4 and even single-stream (1x1) clients.
Like Wi-Fi 6 and 6E, Wi-Fi 7 has been available only in 2x2 specs on the client side. That, plus the sweet-spot 160MHz channel width, means, generally, it's safe to conservatively expect real-world rates of the mainstream Wi-Fi 7 (160MHz) to be about 20% faster than top-tier Wi-Fi 6E (160MHz) counterparts.
However, the new standard does have more bandwidth on the broadcasting side. So, it can handle more 2x2 clients simultaneously with high-speed real-world rates. And that's always a good thing.
3. Multi-Link Operation
Multi-Link Operation, or MLO, is the most exciting and promising feature of Wi-Fi 7 that changes the norm of Wi-Fi: Up to Wi-Fi 6E, a Wi-Fi connection between two direct devices occurs in a single band at a time. MLO changes that.
It's worth noting that MLO is a feature and not the base of the standard, meaning it can be supported by a particular device or not.
In a nutshell, MLO is Wi-Fi band aggregation. Like Link Aggregation (or bonding) in wired networking, it allows combining two or more Wi-Fi bands into a single Wi-Fi link (single SSID). That said, you can have MLO as long as the broadcaster has more than one band, which is the case with all Wi-Fi 7 hardware.
Still, generally, there are two MLO operation modes:
- STR-MLMR MLO (Simultaneous Transmit and Receive Multi-Link Multi-Radio): It's multi-link aggregation using all available bands (2.4GHz, 5GHz, and 6GHz) to deliver higher throughput, lower latency, and better reliability. (For dual-band hardware, such as the Asus RT-BE88U, this mode combines the 2.4GHz and 5GHz band.)
- E-MLSR MLO (Enhanced Multi-Link Single Radio): It's multi-link using dynamic band switching between 5GHz and 6GHz—this mode is only available to broadcasters with these two bands—to deliver load balancing and lower latency.
No matter which mode is used, the gist is that the bonded link delivers "better" connection quality and "more" bandwidth.
It's important to note, though, that at the end of the day, MLO increases the bandwidth, allowing different applications on a client to use the two bands simultaneously. The point here is that no application on the client can have a connection speed faster than the fastest band involved. A speedtest application, for example, still uses one of the bands at a time. This connection speed is still limited by the hardware specs on both ends of the link, whichever is lower.
So, the MLO feature affords supported clients the best probability of connecting successfully at the highest possible speed using the fastest band at any given time, which changes depending on the distance between the client and the broadcaster.
Considering the vast amount of pre-Wi-Fi 7 clients on the market, keep the following in mind about MLO in consumer-grade hardware:
- By nature, link bonding will be more complicated than single-band connectivity—there are just too many variables.
- MLO only works with supported Wi-Fi 7 clients. Some Wi-Fi 7 clients might not support it. (A Windows computer must run Windows 11 24H2 or later to support MLO.) Considering the different performance grades and hardware variants, the result of MLO will vary case by case.
- Wi-Fi 6 and 6E and older clients will still use a single band at a time when connecting to a MLO SSID. And they might pick whichever of those is available in the bonded link. You might get frustrated when they use the slow band instead of a faster one, like in the case of Smart Connect. That happens.
- An MLO SSID requires the WPA2/WPA3 or WPA3 encryption method and won't allow legacy clients to connect. This can be a big headache for those assuming the SSID will just work with all clients. In other words, turning MLO on can cause a big compatibility issue with the hardware's primary SSID(s).
- The reach of the bonded wireless link is as far as the range of the shorter band.
MLO in real-world usage: Great for wireless mesh, but client compatibility can be a big issue
In so-far real-world experience, MLO has proven to be a game-changer in a wireless mesh network by fortifying the Wi-Fi link between broadcasters—the backhaul—both in terms of speed and reliability.
Wi-Fi 7 mesh systems, via my testing method, have shown sustained wireless backhauling links over 5Gbps at 40 feet away.
In terms of range, the bonded link has the reach of the shortest band involved. Since the 6GHz band has just about 75% of the range of the 5GHz when the same broadcasting power is applied, MLO can only be truly meaningful with the help of Wi-Fi 7's fifth and optional feature, Automated Frequency Coordination, mentioned below.
On the other hand, for devices (clients), the effect of MLO has proven to trade the (lack of) backward compatibility for a relatively subdued impact on performance.
Specifically, with single broadcasters or mesh systems with wired backhauling, the feature plays an insignificant role and generally does not noticeably improve the real-world rates of individual clients—currently available at 2x2 specs, such as the Intel BE200 or Qualcomm NCM865 chips—despite the higher negotiated speed of the bonded link.
In a way, MOL is the alternative to the finicky "Smart Connect", where a single SSID is used for all of the broadcaster's bands. In fact, you can think of MLO as the enhanced version of Smart Connect with higher bandwidth and security requirements.
Some hardware vendors, such as Linksys or Asus, require Smart Connect for their broadcaster's primary SSID before MLO can be turned on. In this case, you have to choose between the following in terms of SSIDs:
- Having a primary SSID (via Smart Connect), which is MLO-compliant in terms of security, and an optional 2nd virtual MLO-enabled SSID. This SSID likely won't work with many legacy clients, and users will need to use the hardware's virtual or Guest SSIDs (if available)—Asus has plenty of them via its SDN feature—with lower security requirements to support legacy clients. Or
- Turning off Smart Connect to manage the band individually and without MLO.
Other vendors, such as TP-Link, always use MLO as a secondary virtual SSID, which is the way they handle Guest or IoT SSIDs. This approach saves the users from the MLO trap—they won't be prompted to turn it on by default—but the compatibility with the MLO-enabled SSD remains.
That said, MLO is best used when you have mostly Wi-Fi 6E and newer clients, which won't be the case until years from now. In the meantime, this feature should be turned off when you use a single Wi-Fi 7 broadcaster or a mesh with wired backhauling unless you have the option to create additional SSIDs with lower security requirements for existing clients.
4. Flexible Channel Utilization (FCU) and Multi-RU
Flexible Channel Utilization (FCU) (a.k.a. Preamble Puncturing) and Multi-RU are two other items that help increase Wi-Fi 7's efficiency. With FCU, Wi-Fi 7 handles interference more gracefully by slicing off the portion of a channel with interference, 20MHz at a time, and keeping the clean part usable.
In contrast, in Wi-Fi 6/6E, when there's interference, an entire channel can be taken out of commission. FCU is the behind-the-scenes technology that increases Wi-Fi's efficiency, similar to the case of MU-MIMO and OFDMA.
Similarly, with Wi-Fi 6/6E, each device can only send or receive frames on an assigned resource unit (RU), which significantly limits the flexibility of the spectrum resource scheduling. Wi-Fi 7 allows multiple RUs to be given to a single device and can combine RUs for increased transmission efficiency.
5. Automated Frequency Coordination
Automated Frequency Coordination (AFC) is an optional feature and deals with the 6GHz band, so it's not Wi-Fi 7-exclusive—the band was first used with Wi-Fi 6E. It's not required for a Wi-Fi 7 broadcaster's general function. In fact, it wasn't even mentioned in the initial certification by the Wi-Fi Alliance.
Due to local regulations, the 6GHz band's availability, hence, the implementation of the AFC feature, differs around the world. For this reason, some Wi-Fi 7 broadcasters, such as the Asus RT-BE88U or the TP-Link Archer BE230, forgo this band to remain dual-band.
Still, Wi-Fi 7 makes AFC more relevant than ever. That's because the 6GHz band has the highest bandwidth (fastest) yet the shortest range compared to the 5GHz and 2.4GHz bands when using the maximum allowed broadcasting power. Originally, AFC was intended only for outdoor applications, but when implemented, it's significant for all applications.
Here's how AFC would work when/if available:
The feature enables a 6GHz broadcaster to check with a registered database in real-time to confirm that its operation will not negatively impact other existing registered members. Once that's established, the broadcaster creates a dynamically exclusive environment in which its 6GHz band can operate without the constraint of regulations.
Specifically, the support for AFC means each Wi-Fi 7 broadcaster can use more broadcasting power and better flexible antenna designs. How much more? That depends.
However, it's estimated that AFC can increase the broadcasting power to 36 dBm (from the current 30 dBm limit) or 4 watts (from 1 wat). The goal of AFC is to make the range of the 6GHz band comparable to that of the 5GHz band—about 25% more.
When that happens, the MLO feature above will be truly powerful. But even then, Wi-Fi 7's range will remain the same as that of Wi-Fi 6, which is available only on the 5GHz band. Its improvement is that its 6GHz band now has a more extended reach than in Wi-Fi 6E. In other words, AFC allows the 6GHz band to have at least the same range as the 5GHz. And that's significant.
This feature requires certification, and its availability is expected to vary from one region to another. Hardware released before that is said to be capable of handling AFC, which, when applicable, can be turned on via firmware updates.
A crude AFC analogy
Automated Frequency Coordination (AFC) is like checking with the local authorities for permission to close off sections of city streets for a drag race block party.
When approved, the usual traffic and parking laws no longer apply to the area, and the organizers can determine how fast traffic can flow, etc.
The new chips Broadcom announced today collectively support all these new features of Wi-Fi 7.
And, like existing standards, Wi-Fi 7 is also available in different speed grades and feature sets. And that's where Broadcom's new chips differentiate between themselves.
The BCM67263: Top-tier single-band Wi-Fi 7 for the home
This chip is designed for the residential Wi-Fi access point market. It'll be the one to go inside a home router or mesh system. Its key features include:
- Support for 4 streams of Wi-Fi 7
- Up to 11.5Gbps PHY rate
- Single 6GHz radio
- Up to 320 MHz channel bandwidth
- Multi-link operation (MLO)
The BCM67263 will likely be added to an existing Wi-Fi 6 solution as a single radio chip to form a complete Wi-Fi package.
The BCM6726: A Mid-tier tri-band Wi-Fi 7 home solution
Like the one above, the BCM6726 is also optimized for the residential Wi-Fi access point market. However, it has more to offer in terms of the wireless band. Specifically:
- Support for 4 streams of Wi-Fi 7
- Single radio that supports 2.4 GHz, 5 GHz, or 6 GHz bands
- Up to 5.75 Gbps PHY rate
- Up to 160 MHz channel bandwidth
- Multi-link operation (MLO)
In all, the BCM6726 seems to be a complete Wi-Fi solution but has lower bandwidth, just half of what Wi-Fi 7 has to offer, or the same as the existing Wi-Fi 6E.
The BCM43740: Top-tier Wi-Fi 7 for enterprise broadcaster
The BCM43740 is the first chip designed for enterprise Wi-Fi access points. Key features include:
- Support for 4 streams of Wi-Fi 7
- Single radio that supports 2.4 GHz, 5 GHz, or 6 GHz bands
- Up to 11.5 Gbps PHY rate
- Up to 320 MHz channel bandwidth
This powerful chip is a complete Wi-Fi solution. However, it doesn't support MLO, meaning there's no band or channel aggregation, which can be a downer.
The BCM43720: Entry-level Wi-Fi 7 solution for enterprise applications
The BCM43720 is the second chip for the enterprise access point market. It's a selectable single radio chip. Specifically:
- Support for 2 Streams of Wi-Fi 7
- Single radio dedicated for scanning in the 2.4 GHz, 5 GHz, or 6 GHz bands
- Up to 2.88 Gbps PHY rate
- Up to 160 MHz channel bandwidth
- Multi-link operation (MLO)
This one is an interesting chip that can work on a single band at a time, giving hardware makers flexibility in hardware design.
Specifically, they can use three in a broadcaster to deliver the Wi-Fi on all three bands or two to support just two bands at a given time.
The BCM4398: Interragted Wi-Fi 7 receiver
The BCM4398 is the only chip built for the receiving end. Apart from Wi-Fi, it also has built-in support for Bluetooth 5.0. In a way, it's like the current Intel AX210 Wi-Fi 6E chip plus the support for Wi-Fi 7.
This chip's features include:
- Support for 2-stream Wi-Fi 7
- 320 MHz channel bandwidth
- 6.05 Gbps PHY rate
- Client multi-link operation (MLO)
- Compliance with Bluetooth 5.0 standard
No matter how fast the chips above are, the BCM4398 determines the Wi-Fi 7's speed on a client.
The 6.05Gbps mentioned here is just the theoretical ceiling, but likely the chip will be capable of at least half that in real-world usage. And that's a huge improvement over the existing 2x2 Wi-Fi 6/6E chips, which have a theoretical cap of 2.4Gbps.
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In all, none of these chips include everything Wi-Fi 7 has to offer, but collectively, they paint the full picture of the new standard. And there might be even new chips in the future.
In any case, we have to wait to see how they pan out when actual routers, access points, and clients of the new standard are available.
Availability
Broadcom says it's currently "sampling these Wi-Fi 7 chips to early access partners and customers in retail, enterprise and smartphone, service provider, and carrier segments."
As for when you can get a device with one of them on the inside, the company didn't say, likely because that depends on networking vendors.
However, at this rate, chances are we'll find the first Wi-Fi 7 router by the end of 2023 or early 2024.
Hi, first time visitor here.
I’m still on WIFI 5 wave 2 Router.
If my WIFI 5 router could survive that long, would you suggest me wait for WIFI 6e or WIFI 7 (or WIFI 6)?
TBH, WIFI 6 feels like “WIFI 5 wave 3”, just another enhancement over WIFI 5 but still on 5GHz band. (WIFI 6e = WIFI 6, WIFI 7 = WIFI 6e or WIFI 6 Wave 2)
My advice is to get whatever that works for you at the time being. I pretty much said that in all primer posts of different standards, like this one of Wi-Fi 7 — at the end in case you don’t want to read the whole thing.
Stay awhile, you’ll get above the semantics.
Fascinating. Technology never ceases to amaze!
1. So do you estimate late 2023, or 2024 when we start seeing Wifi 7 Tri band Mesh systems?
2. I am guessing it is still worth going for the Wifi 6E mesh systems (Quad band Netgear), or Triband Wifi 6 systems like the Asus XT12 now? Given those could last you for that 2 year wait.
3. Would we actually ever see widespread Wifi 6E consumer devices? I know there are some phones that have it, but it doesn’t appear to be built in for many new computers, or phones in general yet. I would certainly opt for a new Wifi 6 AX capable device over a Wifi 5 one if I was making a new purchase, but Wifi 6E, not so sure.
1. That’s my guess, nobody knows for sure, though.
2. Yes, it’s always about getting what works for you *today*.
3. Many new phones and new computers, running Windows 11, already have it. Basically, they use the Intel AX210 chip.
I think the first consumer application will be dedicated WiFi7 5Ghz band for backhaul in high end mesh products. That along with 10 Gb ports may make a compelling case for upgrading one’s mesh network.Such systems may be a serious alternative to dedicated APs with ethernet POE backhaul in the sense that the difference in end user experience may not be worth the effort to invest in a full blown Omada type solution for most households.
We’ll have to wait and see, Shantanu.
1) why when i buy a router, its doesn’t say which chip it’s using?
2) another problem will be to find a router with WiFi 7 to buy. Here in Portugal we still do not have the ASUS ZENWIFI PRO XT12 and ASUS GT-AXE11000 despite being available in USA for almost a month already.
3) would be great if routers had an option to remove the chip and put a newer one whenever needed avoiding the purchase of a new router.
4) https://en.wikipedia.org/wiki/IEEE_802.11be …………..##Development of the 802.11be amendment is ongoing, with a goal of an initial draft by March 2021, and a final version expected by early 2024. ##
why vendors are sending chip samples if the protocol is not yet finished?
1. Not everyone is interested in that detail. Note the model names of the chips — they are boring. Those interested, like you, will figure that extra information out.
2. But a nice bottle of Port is SO much more affordable over there! (Seriously!)
3. It’s not that easy. Each chip is used as part of a FEM — more in this post which is proprietary. By the way, you can’t even do this with new Apple computers anymore.
4. Most vendors start making hardware with the draft and finalize it via firmware. It’s been the case with all existing standards.