Lenovo M Series AIO ThinkCentre M90a Gen 6 Review

The ThinkCentre M90a Gen 6 is a specialist's all-in-one. Its integrated GPU has a massive 48GB of VRAM, making it great for professional creative work, but its 8GB of RAM and small SSD hold it back. At around $923, you pay for the sleek form factor and niche graphical power. Only buy this if your software craves VRAM and you hate desk clutter.

The Lenovo ThinkCentre M90a Gen 6 AIO is a bit of a puzzle at first glance. It's an all-in-one desktop that looks like it's built for a sleek office, but its specs tell a different story. With an integrated AMD GPU that lands in the 97th percentile for its category, this machine has some serious graphical muscle hiding under its professional exterior. It's not a gaming rig, but it's clearly built for something more demanding than spreadsheets.

So who is this for? Honestly, it's a niche machine. It's perfect for creative pros who need a clean, cable-free setup with enough power for moderate photo editing, 3D modeling, or video work, but who don't want a giant tower under their desk. The 24-inch 1440p panel running at 120Hz is a huge clue—this is for visual work where smoothness matters. It's also a solid fit for a tech-savvy home office user who wants a single, powerful hub.

What makes it interesting is the contradiction. It scores a dismal 16.3/100 for gaming, yet has a top-tier GPU. The answer is in the details: that 'GPU' is integrated graphics with a massive 48GB of shared VRAM, which is fantastic for professional applications that crave video memory but terrible for gaming's need for raw processing power. It's a specialist, not a generalist.

Let's talk about that 97th percentile GPU score, because it's the headline. In our database, that puts its graphical capabilities ahead of nearly every other all-in-one and many budget desktops. This isn't about frame rates in Cyberpunk. This is about being able to handle complex visual tasks without choking. For software like AutoCAD, Lightroom, or even some lighter 4K video editing timelines, that huge VRAM pool means you can work with large files and high-resolution assets without constant lag or out-of-memory errors. It's a productivity boost for the right kind of work.

Now, the other side of the coin. The CPU sits in a middle-of-the-pack 59th percentile, which is fine for general multitasking and office work but won't set any speed records. The real bottlenecks are the RAM and storage, ranking in the 25th and 18th percentiles respectively. 8GB of RAM in 2024 is tight, and a 256GB SSD fills up fast. In real-world use, you'll feel this if you try to run a dozen Chrome tabs alongside your creative software. The performance story is one of extreme highs and noticeable lows, dictated entirely by your specific workload.

At around $923, the M90a Gen 6 occupies a weird price point. It's more expensive than a basic office AIO, but much cheaper than a dedicated creative workstation or gaming PC. You're paying a premium for the integrated design and that specialized graphical capability. If your work directly benefits from high VRAM, this price starts to make sense as a space-efficient solution.

However, the value equation gets shaky when you look at the base specs. For nearly a thousand dollars, getting only 8GB of RAM and a 256GB SSD feels stingy in 2024. You're almost certainly looking at an immediate upgrade, which adds cost and complexity to a machine designed for simplicity. Compared to a traditional desktop tower at this price, you'd get far more balanced and powerful components, but you'd lose the sleek, integrated form factor.

The competitors our database flags are all gaming desktops like the HP Omen 45L or Alienware Aurora, which is telling. They highlight what this AIO isn't. If gaming or raw CPU power is your goal, any of those towers will run circles around the ThinkCentre for a similar price. They offer upgradeable, dedicated graphics cards and better cooling.

For a more direct AIO comparison, you'd look at something like an Apple iMac or a higher-end Dell OptiPlex AIO. The iMac offers a more polished overall experience and a stunning display but is less configurable and locks you into macOS. The ThinkCentre wins on PC upgrade flexibility (to a point) and that unique high-VRAM configuration for Windows-based professional software. The real trade-off is between the M90a's specific graphical strength and the more balanced, but less graphically capable, specs of other all-in-ones.

Gamers should look elsewhere immediately. The gaming score of 16.3/100 doesn't lie. If you want to play anything more demanding than casual browser games, you need a PC with a dedicated graphics card. Look at the gaming desktops listed as competitors instead.

You should also skip this if you're a heavy multitasker or need to run virtual machines. The base 8GB of RAM will be a constant frustration. Similarly, if you store a lot of files locally, the 256GB SSD will force you into constant file management or reliance on external drives. In both cases, you'd be better off with a standard desktop tower where upgrading RAM and storage is cheap and easy, or seeking an AIO configured with 16GB of RAM and a 512GB SSD minimum from the start.

We recommend the ThinkCentre M90a Gen 6 AIO for one specific person: the creative professional or power user who prioritizes a minimalist, cable-free desk and whose primary software (think CAD, large-image editing, data visualization) heavily benefits from massive amounts of video memory. For that niche, it's a clever and space-saving solution that performs a specific task very well.

For everyone else, it's a harder sell. General office users, students, and even casual content creators would be better served by a more balanced AIO with 16GB of RAM and a larger SSD. And if you have the desk space, a similarly priced traditional desktop tower will give you vastly better overall performance and easy upgrade paths. This AIO is a tool, not a toy.