Apple iMac All-in-One Desktop Computer Review UK 2026

Prebuilts always involve trade-offs. The real question is whether the compromises the manufacturer made actually affect what you need the machine to do. With the Apple iMac M4, the trade-offs are stark and deliberate: you get a gorgeous all-in-one package with zero upgrade path and Apple's ecosystem baked in at every level. Whether that's a brilliant deal or a frustrating cage depends almost entirely on who you are and what you're trying to do.

This particular configuration, the Apple iMac All-in-One Desktop Computer with M4 chip with 10-core CPU and 10-core GPU: Built for Apple Intelligence, 24-inch Retina Display, 16GB Unified Memory, 256GB SSD storage in Blue, sits at an enthusiast price point. For that money on the Windows side, you could build something with discrete GPU muscle, user-upgradeable RAM, and a case you can crack open in five minutes. Apple is betting you don't want any of that. And honestly? For a lot of people, they're right.

With 87 owner reviews averaging ★★★★½ (4.7), the satisfaction rate here is genuinely high. That's not a fluke. But high satisfaction doesn't mean it's right for everyone, and there are some real practical considerations worth unpacking before you hand over your money. So here's what you actually need to know.

The 24-inch Retina display runs at 4.5K resolution with 500 nits of brightness and support for up to one billion colours. That's not marketing fluff. The panel quality on iMac displays has been consistently excellent for years, and owners consistently call it out as one of the best things about the machine. For photo editing, video work, or just spending eight hours a day staring at a screen, it matters more than most people realise until they've used one.

macOS comes pre-installed, obviously. You're also getting a 12MP Center Stage camera, three studio microphones, and six speakers with Spatial Audio. For a machine that's going to live on a desk and handle video calls, that's a genuinely strong package. Apple hasn't cut corners on the peripherals the way most prebuilt manufacturers do. The keyboard and mouse that ship with it are proper Apple accessories, not the cheap OEM plastic you'd get bundled with a Windows all-in-one at this price.

Real-world productivity performance is strong. Apple's own apps like Final Cut Pro and Logic Pro are tuned specifically for M-series silicon, so if you're in that ecosystem, the performance advantage over equivalent Windows hardware is real and not just benchmark noise. Adobe Creative Cloud apps have been properly optimised for Apple Silicon now too, which wasn't always the case in the early M1 days. Lightroom, Premiere, and Photoshop all run well. Microsoft 365 is fully native. For the vast majority of office and creative workflows, this chip is more than fast enough.

Where it gets interesting is comparing this to what you could build for similar money on the Windows side. A DIY build at this price tier would give you a processor with more raw multi-core grunt in absolute benchmark terms. But Apple's unified memory architecture and the tight integration between hardware and software means the M4 punches above its clock speeds in real-world tasks. It's not a simple apples-to-apples comparison (sorry). Owner reviews consistently mention how snappy and responsive the machine feels day to day, which is often more meaningful than synthetic benchmark scores that most people will never actually hit.

But if gaming is a priority, be honest with yourself. This is not a gaming machine. The iMac doesn't run Windows natively anymore since Apple dropped Boot Camp support for M-series chips. You can use CrossOver or Parallels to run some Windows games, but it's a workaround, not a solution. The Mac gaming library has improved significantly, with more titles getting native ports, but it's still nowhere near what you get on Windows. If you want to play the latest AAA releases at high settings, this isn't your machine. Full stop.

The GPU does shine in creative work. Video playback, colour grading, and GPU-accelerated rendering in apps like Final Cut Pro benefit from Apple's media engine, which handles ProRes video specifically. Owners who do video work regularly mention this as a genuine selling point. The ability to play back multiple streams of high-resolution footage without dropping frames is something that would require a much more expensive discrete GPU on a Windows machine. So the GPU story here is: brilliant for creative professionals, adequate for casual gaming, not suitable for serious PC gaming.

The SSD storage is fast. Apple's custom SSD controllers consistently deliver excellent sequential read and write speeds, and more importantly, the random access performance is strong, which is what actually affects how snappy a machine feels in daily use. Apps open quickly, large files move fast, and the system doesn't bog down when you're juggling multiple applications. Owners don't really complain about storage performance, which is telling.

Here's the thing that matters most about both the RAM and SSD though: you cannot upgrade either of them after purchase. The memory is soldered to the logic board. The SSD is technically a separate module but it's paired to the T2-equivalent security chip, so you can't just swap it for a larger drive. What you buy is what you're stuck with. This is the single biggest practical drawback of the iMac compared to a DIY build or even most Windows prebuilts. If you think you might want more storage in two years, buy it now. Apple's upgrade pricing at point of sale is steep, but it's cheaper than being stuck with a full drive.

Under heavier loads, like sustained video export or long compilation tasks, the fans do spin up. But even then, the iMac is significantly quieter than a Windows tower running equivalent workloads. The thermal design is part of what makes the thin form factor possible. Apple has engineered the heat dissipation carefully, and the M4's efficiency means there's less heat to deal with in the first place. This isn't a machine that's going to throttle on you mid-render because it can't keep itself cool.

Where sustained thermal performance gets tested is in genuinely demanding professional workloads run back to back for hours. M-series chips have occasionally shown some thermal throttling under extreme sustained loads in independent analyses of previous generations, though the M4's improved efficiency addresses this to some degree. For most users, this is a non-issue. If you're running compute-heavy workloads for hours at a stretch every day, it's worth knowing that the thin chassis does impose some limits compared to a full tower with active cooling. But for the target audience of this machine, that's unlikely to be a real-world problem.

There's no cable management to speak of in the traditional sense because there's no tower. The power cable is the main cable, and Apple has done a neat trick where the power brick is integrated into the cable itself rather than being a separate block. The stand is fixed angle, which some owners find limiting. You can't tilt it much or raise it significantly without buying a VESA mount adapter and a separate arm. That's a genuine minor frustration if you have specific ergonomic requirements.

Build quality complaints in owner reviews are essentially non-existent. Nobody's reporting creaking plastics, loose ports, or build defects. This is Apple's manufacturing quality, and it shows. The display glass, the aluminium body, the port placement, all of it feels considered and well-executed. Compare this to a Windows all-in-one at the same price and the difference in perceived quality is significant. You're partly paying for this build quality, and it's worth acknowledging that you're getting something for that premium.

Wireless connectivity is handled by Wi-Fi 6E and Bluetooth 5.3. Wi-Fi 6E gives you access to the 6GHz band if your router supports it, which means less congestion and better performance in environments with lots of wireless devices. Bluetooth 5.3 is current-generation and handles Apple's own peripherals, as well as any other Bluetooth accessories, without issues. Owners don't report wireless connectivity problems, which is reassuring.

The practical port situation is worth thinking about. If you're coming from a Windows desktop with a full complement of USB-A ports on the front and rear, the iMac's Thunderbolt-centric approach requires some adjustment. USB-A devices need an adapter or a hub. There are no SD card slots on this model (the higher-spec configurations add them). If you regularly plug in USB-A peripherals, budget for a decent hub. It's not a dealbreaker, but it's a real consideration. The Thunderbolt 4 ports are fast and capable, and a good Thunderbolt dock solves most connectivity needs cleanly.

Apple Intelligence is built in, which is Apple's suite of AI-powered features for writing assistance, image generation, and system-level smarts. It requires an Apple ID and some features require an internet connection, but the on-device processing for privacy-sensitive tasks runs locally. Whether you care about AI assistant features depends entirely on you, but it's there if you want it, and Apple has been reasonably thoughtful about the privacy implications compared to some competitors.

Bloatware is essentially zero. This is one area where Apple is genuinely better than Windows prebuilt manufacturers. There's no third-party antivirus trial, no manufacturer utility suite cluttering up the menu bar, no promotional software you need to uninstall before you can use the machine properly. You get Apple's own apps, which are actually useful, and a clean system. For anyone who's ever set up a new Windows prebuilt and spent an hour removing junk, this is a breath of fresh air. The App Store handles software installation cleanly, and the first-run setup is straightforward.

External expansion via Thunderbolt 4 does offer some flexibility. External SSDs over Thunderbolt are fast enough to be practical for storage expansion. External GPU enclosures exist but Apple Silicon doesn't support eGPUs, so that option is off the table. You can add monitors, docks, and storage externally, and the Thunderbolt 4 bandwidth makes this reasonably capable. But the core compute hardware, the chip, the memory, the internal storage, is fixed from day one.

Compare this to a DIY build or a Windows tower prebuilt, where you can swap RAM, add storage, upgrade the GPU, and generally extend the useful life of the machine through incremental upgrades. The iMac's answer to this is that Apple Silicon machines tend to age well because Apple supports them with software updates for longer than most Windows PCs get driver support, and the efficiency of the M-series chips means they don't feel slow as quickly. That's a reasonable argument. But it requires trusting Apple's upgrade cycle and being comfortable with the machine you have rather than the machine you might want it to be.

The DIY build comparison is more interesting. For a similar budget on the Windows side, you could put together a system with a capable mid-range CPU, a proper discrete GPU with its own VRAM, 32GB of upgradeable RAM, a 1TB NVMe SSD, and a decent case with room to grow. That build would absolutely destroy the iMac in gaming performance and would likely match or beat it in raw multi-core CPU benchmarks. But it wouldn't include a monitor, it wouldn't have a webcam or microphone, and it would require you to actually build it and manage the software yourself.

The iMac's value proposition is the complete package: display, speakers, camera, microphone, keyboard, mouse, and a very capable computer, all in one clean unit with zero setup complexity. If you need all of those things and you're in the Apple ecosystem, the value calculation shifts significantly. If you already have a monitor, keyboard, and mouse, and you primarily want raw compute or gaming performance, the DIY build wins on paper every time.

But the compromises are real and you need to go in with your eyes open. No upgrade path means you're committing to this exact configuration for the life of the machine. The storage situation is the one that catches people out most often: if 512GB feels tight now, it will feel tighter in two years. Think carefully about whether you need more storage before you buy, because adding it later means external drives rather than internal expansion. The gaming situation is also clear: if you want to play current PC games, this isn't your machine, and no amount of enthusiasm for the M4 GPU changes that fundamental reality.

For Windows users who are happy with their setup and just want more performance, a DIY build or a Windows prebuilt tower makes more practical sense. But if you're considering switching to Mac, or you're already in the Apple ecosystem and want a proper desktop, the iMac M4 is a strong, well-considered machine that earns its price. The Apple iMac product page gives you the full configuration options if you want to spec up. Just make sure you spec it correctly from the start, because you won't be changing anything later. Overall, this is an 8.5 out of 10 for its target audience, dropping to a 6 out of 10 if gaming or upgradeability are priorities for you.