Lenovo IdeaCentre A100 All-in-One Desktop UK Review (2026), Tested

Right, so here's something I've been doing for years: whenever a new prebuilt lands on my desk, the first thing I do is grab a screwdriver. Not to void the warranty (well, sometimes), but to actually see what's inside the box. Because the spec sheet tells you one story, and the actual hardware tells you another. The Lenovo IdeaCentre A100 All-in-One is an interesting case, because it's not trying to be a gaming rig. It's an all-in-one desktop aimed squarely at the everyday user, the student, the home office worker who wants something tidy and self-contained. So the question isn't whether it'll run Cyberpunk at ultra settings. It's whether it does what it claims to do, and whether the money you're spending is actually going somewhere sensible.

I've been living with the Lenovo IdeaCentre A100 All-in-One Desktop UK Review (2026) for three weeks now. It's been on my secondary desk, handling everything from video calls and spreadsheets to light photo editing and the occasional YouTube rabbit hole at midnight. And I've got thoughts. Quite a few of them. Some good, some less so. Let's get into it.

Before we go any further, a quick note on what this machine actually is. The IdeaCentre A100 is an all-in-one, meaning the PC components are built into the monitor housing. There's no separate tower, no cable spaghetti between a case and a display. It's one unit, one power cable, done. That's either brilliant or limiting depending on your perspective, and we'll dig into both sides of that throughout this review.

The chassis is slim and relatively light for an all-in-one, with a tilt-adjustable stand that works well enough on a standard desk. Connectivity is decent for the price, with USB-A and USB-C ports on the side and rear, HDMI out (yes, you can connect a second display), and built-in Wi-Fi. The webcam is integrated above the display, which is handy for video calls without needing an external camera. It's all very sensible and considered, even if it's not exciting.

One thing I want to flag upfront: the power supply situation in an all-in-one is fundamentally different from a tower. There's no traditional ATX PSU here. Instead, you've got an external power brick, similar to what you'd find on a laptop. That's fine for the hardware inside, but it does mean upgrade options are extremely limited. More on that later. For now, here's the full spec breakdown:

Where you start to notice the limits is when you push it harder. Exporting a batch of photos in Lightroom takes noticeably longer than it would on a machine with a discrete GPU doing some of the heavy lifting. Video editing in DaVinci Resolve is possible but slow, and you'll want to keep your project files simple. Anything that's genuinely compute-intensive will expose the fact that this is a mid-range mobile-class processor in a thin chassis, not a workstation. That's not a criticism exactly, it's just the reality of what this machine is designed for.

For the target audience, though? Honestly, it's fine. Students writing essays, people working from home on documents and spreadsheets, families who need a shared computer for browsing and streaming, all of that works well. The Ryzen 5 architecture is genuinely efficient, and AMD's Ryzen lineup has matured to the point where even the lower-tier chips punch above their weight in lightly-threaded workloads. I ran it through a week of solid work-from-home use and never felt like I was fighting the machine. That counts for a lot.

That said, integrated graphics have come a long way. Older titles, indie games, and less demanding games are genuinely playable. I tested a few things during my time with it: Minecraft runs fine at 1080p with standard settings, older esports titles like CS:GO (now CS2 in its current form) are playable at lower settings, and something like Stardew Valley or Hades runs without issue. If your gaming needs are casual and you're not chasing frame rates, you'll get by. But Elden Ring, Cyberpunk, anything from the last couple of years that's graphically demanding? Forget it. You'll be looking at sub-30fps at the lowest settings, and that's being generous.

The integrated Radeon graphics do benefit from the NVMe SSD in terms of loading times, and the shared memory setup means you're not bottlenecked by a slow storage drive at least. But 8GB of total system RAM shared between the CPU and GPU is tight. If you can upgrade to 16GB (more on that in the upgrade section), you'll see a meaningful improvement in integrated GPU performance because it'll have more memory to work with. As it stands, treat this as a productivity machine with light gaming capability, not the other way around. Integrated graphics have improved dramatically, but they're still not a substitute for a dedicated card when it comes to gaming.

The 512GB NVMe SSD is a genuine bright spot. It's fast, noticeably faster than the SATA SSDs you'd find in some budget machines, and it makes the whole system feel snappier than the spec sheet might suggest. Boot times are under 15 seconds from cold, applications open quickly, and file transfers are painless. For most users, 512GB is enough storage for day-to-day use, though if you're storing large media libraries or game installs you'll want to think about external storage. NVMe as a standard has really transformed budget computing over the last few years, and it's good to see it here rather than a slower SATA drive.

The upgrade situation for memory is worth discussing separately (I'll cover it in the upgrade section), but the short version is that all-in-ones are notoriously difficult to upgrade. The RAM may be soldered, which would mean 8GB is what you've got forever. If it's socketed, you might be able to swap in a 16GB stick. This is something to check carefully before buying if you think you'll want more memory down the line. Storage expansion via USB is always an option, and it's a reasonable workaround for the capacity question if not the speed question.

Noise is minimal under light loads. You'll barely hear the fan during browsing, document work, or video streaming. Under heavier sustained loads, the fan does spin up and you can hear it, but it's not loud. It's more of a gentle whoosh than the jet-engine impression some thin machines put on. Compared to some of the cheaper all-in-ones I've tested over the years, this is actually pretty well managed. Lenovo's engineering team clearly put some thought into the thermal design rather than just stuffing components in and hoping for the best.

The one caveat is that the chassis does get warm to the touch on the back panel during extended use. That's normal for this form factor, the heat has to go somewhere, and the rear vents are doing their job. Just don't block them. If you're planning to mount this on a wall or tuck it into a tight space, make sure there's clearance behind the unit. Restricted airflow in an all-in-one is a recipe for long-term reliability issues, and I've seen plenty of machines come through our workshop with heat damage from exactly that scenario.

The stand allows for tilt adjustment, which is useful for getting the screen angle right. It doesn't offer height adjustment or VESA mounting compatibility in the standard configuration, which is a limitation if you want to use a monitor arm. The base footprint is compact, which is one of the genuine advantages of the all-in-one form factor. You're not giving up desk space to a tower, and the single power cable situation keeps things tidy. For anyone who's spent time wrestling with cable management in a traditional tower setup, the simplicity here is genuinely appealing.

Build quality feels appropriate for the price tier. The plastics are decent, not premium, but not the kind of thin, creaky stuff you'd find on the very cheapest machines. The display housing feels solid and the stand doesn't wobble. I did notice that the port covers on the side (where the USB ports live) feel a bit flimsy, and I'd be careful with them over time. But that's a minor gripe. Overall, this is a well-assembled machine that should hold up fine in normal home or office use. Lenovo's build quality has been consistently decent across their consumer lineup, and the A100 continues that trend.

Networking is handled by Wi-Fi 5 (802.11ac) and Bluetooth 5.0. Wi-Fi 5 is fine for most home broadband connections, though if you're on a very fast gigabit connection and want to make the most of it, you'd ideally want Wi-Fi 6. There's no ethernet port, which is a genuine omission. I know all-in-ones often skip it for aesthetic reasons, but a wired connection is always more reliable for video calls and large file transfers. If you need ethernet, you'll want a USB-to-ethernet adapter, which adds a bit of cost and a dangling cable to the otherwise clean setup.

The integrated 720p webcam is adequate for video calls. It's not going to replace a proper external webcam if you're doing professional streaming or content creation, but for Teams and Zoom it does the job. The built-in microphone array is similarly functional rather than impressive. The integrated speakers are actually better than I expected, with enough volume for a room and reasonable clarity for music and video. You wouldn't use them for critical listening, but for background music while you work they're perfectly fine. All told, the connectivity package is solid for the intended use case, with the ethernet omission being the main thing I'd flag.

Beyond Vantage, there are a few trial subscriptions and Microsoft's own pre-installed apps (OneDrive, Teams, the usual suspects). Nothing too egregious. I did a fresh startup and counted the pre-installed third-party applications, and it was a short list. Some budget machines from other manufacturers come loaded with antivirus trials, shopping apps, and all sorts of stuff you never asked for. The A100 is relatively clean by comparison. A quick uninstall session of anything you don't want takes about ten minutes and you're sorted.

Windows 11 Home does have some limitations worth knowing about. If you need BitLocker encryption for work purposes, you'll want Windows 11 Pro, which isn't included here. For most home users that's irrelevant, but it's worth knowing. The OS runs well on this hardware, and Microsoft's continued optimisation of Windows 11 for lower-power hardware means it feels more at home on machines like this than Windows 11 did at launch. Updates install in the background without too much disruption, and the overall software experience is clean and functional. Lenovo Vantage is worth a look if you want to keep tabs on system performance and warranty status.

Storage is the easier one. If there's a free M.2 slot (which varies by configuration, so check your specific unit), you could add a second SSD. Alternatively, external USB storage is always an option and works well for media libraries and backups. For the primary drive, you might be able to swap the existing SSD for a larger one, though this involves opening the machine up and isn't something I'd recommend for anyone who isn't comfortable with that kind of work. The Lenovo IdeaCentre support pages have hardware maintenance manuals that show what's accessible.

RAM is the trickier question. If the memory is soldered (common in slim all-in-ones), you're stuck with 8GB. If it's in a SO-DIMM slot, you might be able to upgrade to 16GB, which would make a meaningful difference to everyday performance and integrated GPU capability. I'd strongly recommend checking this before purchase if you think you'll want more memory. The honest summary is this: buy the A100 for what it is right now, not for what you might want it to be in two years. If you think you'll need more power down the line, a traditional tower gives you far more room to grow. The all-in-one convenience comes at the cost of flexibility, and that's a trade-off you need to make consciously.

The HP All-in-One 24 is probably the A100's closest rival. It typically comes with similar Intel Core i3 or i5 options, a 23.8-inch display, and comparable storage configurations. HP's build quality is solid, and their support infrastructure in the UK is good. The Acer Aspire C24 tends to be slightly cheaper and shows it in the build quality, with plastics that feel a bit less substantial. Both are reasonable machines, but neither does anything dramatically different from the A100. The choice between them often comes down to personal preference on brand support and whatever deal is running at the time.

Where the IdeaCentre A100 holds its own is in the software experience (Lenovo Vantage is genuinely better than HP's equivalent) and the AMD Ryzen platform, which offers good efficiency and integrated graphics performance that's competitive with Intel's integrated options. It's not a runaway winner in any single category, but it's a well-rounded package that doesn't have any obvious weak spots for its intended use case.

The compromises are real, though. No ethernet port is annoying. The 8GB RAM is tight for 2026 and potentially non-upgradeable. There's no discrete GPU, so gaming is limited to older and less demanding titles. And like all all-in-ones, if something goes wrong with the display or the motherboard, you're often looking at replacing the whole unit rather than just swapping a component. These aren't dealbreakers for the right buyer, but they're things you need to go in with eyes open about.

Value-wise, the current price (check the live price below, it moves around) puts this in the budget tier, and at that level it's competitive. You're not getting ripped off. The convenience of an all-in-one, the Lenovo build quality, and the Windows 11 Home licence all factor into that price, and compared to building something equivalent yourself, the maths actually work out reasonably well when you factor in the display, keyboard, mouse, and OS that come in the box. For the right person, this is a smart, sensible buy. For a gamer or a power user, look elsewhere.

My editorial score for the Lenovo IdeaCentre A100 All-in-One is 7 out of 10. It does its job well, it's well built, and it's fairly priced. The RAM situation and missing ethernet port keep it from scoring higher, but for its target audience it's a solid recommendation.