Skip to main content

What is an APU? Should you buy one for your PC?

What is an APU? AMD's new hybrid CPUs: Explained

AMD Ryzen 5 2400G & Ryzen 3 2200G Review fingers
Bill Roberson/Digital Trends
Although Intel has offered most its central processors with onboard graphics for some time, AMD has only done the same with distinctive product lines. Where its mainstream CPUs, even the latest Ryzen offerings, don’t offer any kind of built-in graphics, its accelerated processing units (APUs) do.

But what is an APU, and is it really any different from what Intel offers with its processors? The core concept of an APU is blessedly simple: An APU combines the functionality of a CPU and a GPU, two pieces of hardware found in basically any computer.

Two halves make a whole

The central processing unit, or CPU, carries out all the instructions for computer programs. Every action you take on your computer, whether running a game or simply typing a letter, must go through the CPU.

Get your weekly teardown of the tech behind PC gaming
Check your inbox!

The graphics processing unit, or GPU, is a piece of hardware that allows a computer to render images quickly. Creating 3D images often involves complex processes like rendering polygons, mapping textures, and using complicated equations involved in animation. Offloading these to dedicated hardware makes 3D images much quicker to produce.

AMD Ryzen 5 2400G & Ryzen 3 2200G Review fingers motherboard
Bill Roberson/Digital Trends
Bill Roberson/Digital Trends

By integrating the CPU and GPU into a single unit, the APU produces a better transfer rate between the two, allowing them to share the burden of processing tasks. This also allows the APU to complete tasks while using less power than a standard CPU and graphics card setup and ensures a certain base level of graphical capability, which makes the overall user experience better. Most importantly, it means you don’t have to purchase a separate graphics card, which drastically lowers the overall price of your PC.

None of this is really any different from what Intel does with its CPUs though, even if AMD likes to call its chips that feature both cores something a little different. Most of Intel’s recent architectures from its seventh and eighth generations, combine CPU and GPU functionality on a single die. Essentially, any modern processor you purchase these days will be an APU, even if it doesn’t bear the name. That doesn’t, however, mean they’re all made equal.

But are they worth it?

Although Intel chip buyers will almost always get themselves an on board graphics die whether they want one or not, AMD buyers have a choice. Do they buy a dedicated AMD CPU — preferably from the latest generation of Ryzen processors — or opt for an APU, like the new Ryzen with Vega chips? If you’re a gamer, even on a modest budget, you’re much better off opting for one of the best CPUs with a dedicated graphics card. Although that option is more expensive, the performance offered by both an independent processor and stand-alone video card is much better.

APUs have their place, perhaps with non-gamers and those on extremely low-budgets benefiting from the lack of a need for a dedicated graphics card. However, we’ve yet to see an APU that

Editors' Recommendations

Jon Martindale
Jon Martindale is the Evergreen Coordinator for Computing, overseeing a team of writers addressing all the latest how to…
Should you turn your computer off at night? We asked an expert
Dell XPS 8930 Review

Many of us spend a sizable portion of our waking hours at or near our computers, whether it's for work, socializing, or entertainment. Practically the only time we're not using a computer, it seems, is while we're asleep. But how should your computer face those night time hours? Leaving a computer on all the time can be noisy and distracting due to fan noise, and can cost you in electricity. On the other hand, shutting down and restarting a computer regularly could cause your components to fail earlier.

So what's the right choice? Should you use a handy shortcut to shut down your computer every night? Or is it better to leave it on all the time to increase its longevity? We spoke to an expert to find out.

Read more
Microsoft might end one of the most annoying GPU wars
Three RTX 4080 cards sitting on a pink background.

The never-ending battle between AMD, Nvidia, and Intel doesn't just involve their graphics cards -- it also stretches to their respective upscaling solutions. It's not all about performance, either, but also the number of games that support them. Microsoft aims to streamline and unify these upscalers, making it easier for game devs to add support for every GPU vendor.

The main issue with having three different upscaling solutions lies not just in how well they all perform in relation to each other (although that's pretty interesting, too), but in how many games can support them. After all, what's the point in DLSS, FSR, and XeSS, if they're not available in too many games? This is where Microsoft's new API, dubbed DirectSR, might come in handy.

Read more
The best cooler for the 7800X3D isn’t as powerful as you’d think
AMD Ryzen 7 7800X3D held between fingertips.

The AMD Ryzen 7 7800X3D is the best CPU for gaming, and it's incredibly efficient, which means for most PC users who aren't looking to transcode video or create 3D renders, it's the best CPU overall. As efficient as it is, though, you do still need to cool it, and if you want it to run cool and quiet, you need a relatively capable one. But which is best?

You could just buy the best air cooler or AIO cooler available, and that will work absolutely fine. Really well, in fact. But you don't need to. Thanks to its relatively modest TDP, the 7800X3D doesn't actually need a monster cooler to run quietly and run well. You can save a lot of money by going with something more modest.
A single tower is all you really need

Read more