iPad Air M3 vs M4: The Real Upgrade Worth Paying For

Apple just announced the M4 iPad Air, and the question everyone with an M3 model is asking right now is simple: do I need to upgrade? The short answer is no, most M3 owners do not. The M4 iPad Air starts at the same $599 for the 11-inch and $799 for the 13-inch, the design is identical, the display is still a 60Hz LCD, the cameras have not changed, and the battery life is the same. On the surface, this looks like one of those updates where Apple shuffled chips and called it a year.

But here is where it gets interesting. The M4 iPad Air ships with 12GB of unified memory, up from 8GB on the M3. That is a 50% jump in RAM at the same price point. It also picks up Wi-Fi 7 through Apple's N1 wireless chip, Bluetooth 6, and Apple's own C1X modem on cellular models. Those are not flashy spec-sheet upgrades. Those are the kind of changes that age differently over two or three years of ownership, especially as Apple Intelligence features keep demanding more local memory and iPadOS multitasking keeps getting heavier. So the real question is not whether the M4 is better. It obviously is. The question is whether the gap between M3 and M4 is big enough to justify spending $599 again.

That depends entirely on how you use your iPad.

What Actually Changed Inside the M4 iPad Air

The headline number from Apple is "up to 30% faster than M3." That sounds impressive until you realize that Apple says this about literally every chip generation. What matters more is what changed inside the silicon. The M4 in the iPad Air runs an 8-core CPU with 3 performance cores and 5 efficiency cores, paired with a 9-core GPU and a 16-core Neural Engine. The M3 also had an 8-core CPU, but its split was 4 performance cores and 4 efficiency cores, with the same 9-core GPU and 16-core Neural Engine. So on paper, the CPU core count is the same, the GPU core count is the same, and the Neural Engine core count is the same.

Where the gap shows up is in memory. The M4 iPad Air gets 12GB of unified memory with 120GB/s of bandwidth, compared to the M3's 8GB at 100GB/s. That extra 4GB and the faster bandwidth matter more than most people realize. Apple Intelligence runs on-device machine learning models that sit in RAM. The more memory available, the more models can stay loaded without constantly swapping to storage. And with iPadOS 26 bringing back Split View and Slide Over in ways that actually work now, having an extra 4GB of breathing room means your apps are less likely to reload when you switch between them. I mean think about it — how many times have you swiped back to Safari and watched the page reload because iPadOS dumped it from memory? That is an 8GB problem.

Apple also claims the M4 is "up to 2.3x faster than M1." So for anyone still holding onto an M1 iPad Air, the performance gap is now genuinely massive.

The Chip Binning Detail Nobody Is Talking About

Here is the part that made me pause. The M4 chip inside the iPad Air is not the same M4 chip that Apple put in the iPad Pro last year. The iPad Pro's M4 has 4 performance cores and 6 efficiency cores for a total of 10 CPU cores. The iPad Air's M4 has 3 performance cores and 5 efficiency cores for a total of 8. That is called chip binning — Apple takes M4 chips that did not make the cut for the full 10-core configuration, disables the underperforming cores, and puts them in the lower-tier product.

Does this matter in daily use? For most people, honestly, no. The three performance cores in the Air's M4 are still faster individually than the four performance cores in the M3. You are getting fewer cores but better cores, plus that massive RAM upgrade. The real-world difference between 3 and 4 performance cores only shows up in heavily multithreaded workloads like video encoding, 3D rendering, or compiling code. Scrolling through Safari, editing photos in Lightroom, taking notes, streaming video — none of that will feel different between 3 and 4 performance cores.

But here is the thing that bugs me. Apple does not advertise the core configuration anywhere on the iPad Air product page. You have to dig into the tech specs comparison page to find it. The marketing just says "M4 chip" as if every M4 is the same chip. It is not. The M4 in the Air has one fewer performance core and two fewer efficiency cores than the M4 in the Pro. That is a strange move — Apple is shipping a lesser version of the M4 in the Air while giving the Pro the full-fat chip, and most buyers will never know the difference exists. For the majority of iPad Air users, it genuinely does not matter. But it is the kind of detail that makes you wonder what you are actually paying for when Apple puts the same chip name on two different products.

Wi-Fi 7, Bluetooth 6, and the C1X Modem

Well, this is where the M4 iPad Air starts to separate itself from the M3 in a way that has nothing to do with the processor. The M4 model uses Apple's N1 wireless chip, which brings Wi-Fi 7 and Bluetooth 6 to the iPad Air for the first time. The M3 was limited to Wi-Fi 6E and Bluetooth 5.3. Why does this matter? Wi-Fi 7 supports wider channels, lower latency, and faster peak speeds, which means faster downloads, smoother streaming, and better performance in crowded network environments. Bluetooth 6 adds improvements to connection reliability and audio quality that will matter more as Apple releases new accessories built around the newer standard.

Now, do you have a Wi-Fi 7 router right now? Most people do not. But if you are buying an iPad you plan to keep for three to four years, and Wi-Fi 7 routers are already dropping in price, the M4's wireless hardware gives you future-proofing that the M3 simply cannot match. You cannot add Wi-Fi 7 to an M3 iPad Air with a software update. It is a hardware limitation, full stop.

The cellular story is even more compelling. The M4 iPad Air's cellular models use Apple's C1X modem, which Apple says delivers 50% faster cellular speeds and uses 30% less modem power compared to the third-party modem in the M3. That is a meaningful upgrade for anyone who uses their iPad on the go. Faster downloads on LTE and 5G, plus less battery drain from the modem itself. The M3's third-party modem was fine, but the C1X represents Apple's push to control every piece of wireless silicon in its devices, and the efficiency gains are real.

So Who Should Actually Upgrade?

This is where I have to be direct, because the answer is not the same for everyone.

Are you on an M1 iPad Air or older? Upgrade now. Seriously. The M4 is up to 2.3x faster than the M1, you are jumping from 8GB to 12GB of RAM, you get Wi-Fi 7, Bluetooth 6, and the C1X modem if you go cellular. The performance gap between M1 and M4 is enormous, and you are probably already noticing your M1 struggling with newer iPadOS features and Apple Intelligence demands. The M4 iPad Air at $599 is a no-brainer for M1 owners. Do not overthink it.

Are you on an M2 iPad Air? You are in the gray zone. The M2 has 8GB of RAM and Wi-Fi 6E, same as the M3. The M4 gives you that RAM bump and wireless upgrade, plus a significantly faster chip. Whether that justifies the spend depends on whether your current iPad feels slow or limited. If it does, the M4 is a solid jump. If your M2 still handles everything you throw at it, you could wait another generation without missing much.

Are you on the M3 iPad Air? Probably skip this one. I know that is not the exciting answer, but the M3 to M4 jump is incremental in daily use. Yes, you get 4GB more RAM and Wi-Fi 7. Those are genuine improvements. But the CPU performance difference is modest — remember, the M4 in the Air actually has fewer performance cores than your M3 — and you are paying full price for a device that looks, feels, and performs almost identically to what you already own. The exception is if you are a cellular iPad user who would seriously benefit from the C1X modem's speed and efficiency gains, or if you are pushing your M3's 8GB of RAM to its limits with heavy multitasking and Apple Intelligence features. In those specific cases, the M4 earns its price. For everyone else on M3, your iPad is still excellent. Keep it.

The RAM upgrade from 8GB to 12GB is the real story here, not the CPU speed bump. That extra headroom for Apple Intelligence models and iPadOS multitasking is what will age differently over time. Two years from now, when Apple Intelligence features are heavier and iPadOS is managing more background processes, 12GB will breathe where 8GB gasps. But that is a future problem, and if your M3 handles today's workload just fine, there is no reason to pay $599 for breathing room you do not need yet.

Pre-orders for the M4 iPad Air open March 4, with availability starting March 11, 2026.

Here is how the M3 and M4 iPad Air compare on the specs that actually differ between generations.