Lenovo M Series SFF ThinkCentre M90s Gen 6 SFF Review

This SFF desktop has a best-in-class integrated GPU but underwhelming everything else. The 8GB RAM and 256GB SSD are major bottlenecks. Only worth it if compact size and strong graphics are your absolute top priorities.

The Lenovo ThinkCentre M90s Gen 6 SFF is a small-form-factor desktop that's built for business, not fun. It's got a surprisingly powerful integrated GPU, but that's paired with a modest 8GB of RAM and a tiny 256GB SSD. Lenovo's pitch is about AI performance, thanks to an optional NPU, but the core specs feel like they're from a different, more budget-focused era.

The AMD integrated graphics here are a standout, landing in the top tier for GPU performance. That's great for driving a 4K display or handling some light visual tasks. The CPU is solid, middle-of-the-pack, but the rest of the package is underwhelming. The 8GB of RAM is a real bottleneck for multitasking, and the 256GB SSD is disappointingly small. Our reliability data also suggests this system lags behind most in that department.

At around $719, this feels like a weirdly unbalanced package. You're paying for a top-tier GPU housed in a system with mediocre RAM, disappointing storage, and questionable reliability. The value proposition hinges entirely on whether you need that specific GPU power in a small box and can live with the other compromises. For most people, it's a tough sell.

Compared to gaming desktops like the HP OMEN 45L or Alienware Aurora, this ThinkCentre is a different beast. Those systems are built for raw power and upgradability. This Lenovo is about compactness and a specific GPU strength. Even against Lenovo's own Legion Tower, the M90s sacrifices everything for size. The MSI Aegis and Asus ROG NUC are more balanced small systems that don't skimp so heavily on core components. If you need a SFF PC, those competitors often make more sense.

Skip this if you're a developer, need a workstation, or plan to do any multitasking. The 8GB RAM will choke. Also, if reliability is a key concern, our data shows this model falls behind. And obviously, gamers should look elsewhere.

Buy this only if your primary need is a very small desktop with exceptional integrated graphics for display output or light visual work, and you're willing to immediately upgrade the RAM and storage. It's a niche machine for a specific office setup.