What Is Wi-Fi 5 & Should You Still Use It In 2022?

WiFi 5, also known as 802.11ac, was first introduced in 2013. It was a significant update versus its previous generation and works exclusively in the 5 GHz band. Wi-Fi 5 introduced 160 MHz channels, MU-MIMO, and speeds that rival Gigabit ethernet.

If your internet speed is between 150 and 600 Mbps, a Wi-Fi 5 router is a great option. To take advantage of anything more than that, you will need a Wi-Fi 6 router.
What Is Wi-Fi 5

Wi-Fi 5 may no longer be the latest and the greatest.

But it’s still the most widely available technology for end-users, by far. 

The 802.11ac standard was renamed Wi-Fi 5 by the Wi-Fi alliance in 2018. It achieved such good speeds that it promised to be an ethernet killer.

Let’s take a look at how this protocol revolutionized Wi-Fi technology.

What Was New About Wi-Fi 5?

Let’s talk about what made Wi-Fi 5 so special, even by current standards, when it came out back in 2013.

Wi-Fi 4 was the first time a wireless standard allowed us to increase channel width by introducing 40 MHz channels. [1]

Wi-Fi 5 took this to even greater lengths by introducing 80 MHz channels for the first time. That means quadruple the throughput over regular 20 MHz channels!

It came with 2 small caveats, though. 

First, both your router and client device need to support 80 MHz channels. 

Second, Wi-Fi 5 only works on the 5 GHz band. But don’t think this is a bad thing. A single 80 MHz channel in 5 GHz has more spectrum than all 2.4 GHz channels!

It’s also important to know that just because a device can operate in the 5 GHz band, it doesn’t mean it automatically supports Wi-Fi 5.

But once you get those out of the way, Wi-Fi 5 delivered some serious improvements to home Wi-Fi technology. 

Wi-Fi 4 allows us to reach real-world speeds of 144 Mbps to 217 Mbps, which is not bad for a residential connection. But Wi-Fi 5 took speeds to new horizons.

It can achieve theoretical speeds of 1.3 Gbps on the (then) new 80 MHz channels. That is 1,300 Mbps! It was a big deal, especially then.

But as we already know, it’s close to impossible to get to those speeds in real-world scenarios.

A much more realistic goal is to reach around 400 to 800 Mbps. Achievable by using 2×2 and 4×4 MIMO clients, respectively.

Wi-Fi 5 – Wave 2

As if all of the above weren’t enough. 2016 saw the arrival of Wi-Fi 5 Wave 2. Let’s have a quick look at the features it brought along.

160 MHz Channels

Remember all those nice things about 80 Mhz channels?

Now they are twice as good! Right?

Well. Sort of. Wave 2 introduced the even wider 160 MHz channels. Capable of achieving even greater theoretical speeds and increased bandwidth.

Once again, there are some caveats. 

Your client devices need to support 160 MHz channels for them to work.

And even if they do, 160 MHz channels are so wide that it is almost guaranteed you will have interference from your neighbors, even in the 5 GHz band.

Unless you live somewhere without anyone using the internet around you. In that case, go as wide as you’d like.

Increased Speeds

Remember how exciting 1300 Mbps sounded before? Well, it was child’s play compared to the 3,400 Mbps (3.47 Gbps) wave 2 brought along. 

Even if you had some interference, a bad home layout, and other challenges that could reduce the throughput.

Reducing it by 50% still means we are talking about Gigabit speeds. 

8swG7fQgUvuIaLEBUMPrKfcopjPsBJQIGawxv5bp HdEEzGBOc284hD9TqB07JHHhoO7TqS lWdP7bEhu0RxuVS8nFDAnO69LyijB6mpr ps9C

MU-MIMO and Beamforming

MU-MIMO was another big feature introduced in Wi-Fi 4. Not to be confused with plain MIMO (SU-MIMO) in Wi-Fi 4.

This allowed Wi-Fi 5 routers not only to use multiple antennas to increase bandwidth. But to use each antenna to connect to a different device simultaneously.

There definitely are some constraints with MU-MIMO.

Mainly that your client device also needs to support it in order to work. But it opened the world to performance standards that were never seen before.

Wi-Fi 5 also introduced better beamforming performance. Meaning antennas can directly point their signal to where the client devices are. Saving you from wasting significant amounts of bandwidth.

As always, take this with a grain of salt. 

Both MU-MIMO and Beamforming are highly dependant on your home layout. And things like wall materials and neighboring interference.

Can I Still Use a Wi-Fi 5 Router?

Even in 2022, when Wi-Fi 6 has already been out for a couple of years, Wi-Fi 5 is still more common.

You can get some great deals on Wi-Fi 5 routers, and they will more likely than not be plenty for average home usage. 

They are still a great option if you have internet speeds between 150 to 600 Mbps. Not to mention, Wi-Fi 5 routers are still significantly cheaper than their Wi-Fi 6 counterparts. 

If you are not looking to upgrade your router too for a very long time, a Wi-Fi 6 router might be worth the extra investment. 

But from a limited budget perspective, a good Wi-Fi 5 router will go a long way and last a good amount of time, even to this day.

There are an incredible amount of devices that still aren’t compatible with Wi-Fi 6, anyways.

Bottom Line

Wi-Fi 5 was revolutionary, even by today’s standards. Chances are that your home internet will not even be able to use all the bandwidth it offers.

Plus, most modern client devices like cellphones or laptops are not still compatible with the full capabilities of MU-MIMO. 

However, it has become increasingly affordable. So, if you are looking to buy a new router today, you should definitely aim to get at least a Wi-Fi 5 device.

But if your thing is to always have the latest tech, a Wi-Fi 6 router is what you’re looking for.

Click here to learn more about Wi-Fi 5 Vs. Wi-Fi 6.

Was this post helpful?

Leave a Comment