Lenovo ThinkCentre 625, AMD A4-9120C, 4GB, 128GB SSD, Black

The Lenovo ThinkCentre M625 is a fanless 1-liter mini PC built for light business use. It's silent, tiny, and runs Windows 11 Pro, but the weak AMD processor and 4GB of RAM limit it to basic tasks. At USD 180 it's a niche buy, but European prices up to EUR 505 make it a poor value.

Let's be blunt: the A4-9120C is a weak processor. It's a dual-core chip from 2018 with a 1.6GHz base clock and 2.4GHz boost. In our database, it lands in the 18th percentile for CPU performance among mini PCs. That means it's slower than 82% of the machines we track. For basic tasks like opening a browser, checking email, or running a remote desktop client, it's fine. But open more than a few tabs and you'll feel it.

The 4GB of DDR4 RAM is the real bottleneck. That's the 1st percentile, the absolute bottom of what we track. Windows 11 Pro alone wants 4GB just to breathe. Add a browser with a few tabs and you're hitting the page file constantly. The 128GB SSD helps with boot times, but it's also in the 6th percentile for storage capacity. You'll fill it fast if you're storing anything locally. The integrated GPU is similarly weak, landing in the 14th percentile. Don't expect to play anything beyond solitaire.

The Dell OptiPlex 7070 SFF is the most direct competitor, and it's a better machine in almost every way. You get a proper desktop-class Intel processor, upgradeable RAM, and more storage options. It's bigger, sure, but it's not trying to be a 1-liter thin client. The HP Elite Mini 800 G9 is another step up, with modern Intel silicon and much better performance, though it costs more.

If you want something with actual power in a small package, the Minisforum DeskMini UM880 Plus runs circles around the M625. It has a Ryzen processor with real integrated graphics, more RAM, and faster storage. The Apple Mac Studio M2 Max is in a completely different universe, both in performance and price. The ACEMAGIC M1 is closer in spirit to the M625, a budget mini PC, but even it typically ships with more RAM and a better CPU. The M625 only makes sense if silence and size are your absolute top priorities and you're willing to sacrifice everything else.

Value is tricky here because pricing is all over the place. In the US, you can grab this for around USD 180, which is reasonable for a silent Windows 11 Pro thin client. But in Europe, prices range from EUR 393 to EUR 505 depending on the vendor. That's a huge spread, and at the high end you're paying way too much for these specs. If you're in Europe, shop around. The cheapest EUR 393 listing is the only one that makes any sense, and even that's pushing it. For comparison, you can find refurbished Dell OptiPlex mini PCs with better processors and more RAM for less money in most markets.

The Lenovo ThinkCentre M625 is a tiny business desktop that's all about footprint, not firepower. It's a 1-liter mini PC built for offices, call centers, and anyone who needs a quiet Windows 11 Pro machine that disappears behind a monitor. The AMD A4-9120C processor and 4GB of RAM put this firmly in the budget thin client category, not the productivity workstation category.

People searching for a cheap mini PC for basic office work will find the M625 checks some boxes. It's fanless, so it's completely silent. It has a decent port selection with DisplayPort, three USB-C ports, six USB-A ports, and Ethernet. And it runs Windows 11 Pro, which matters for business deployments that need domain join and BitLocker support.

But the specs are rough. The dual-core A4-9120C sits in the 18th percentile for CPU performance among mini PCs in our database. The 4GB of RAM is dead last at the 1st percentile. This is a machine for light web browsing, email, and remote desktop sessions, not multitasking.

Skip the M625 if you plan to do any real work on it. If you need to run multiple browser tabs, edit documents while streaming music, or use any kind of creative software, the 4GB of RAM will frustrate you daily. Gamers should look elsewhere entirely, this thing can't run anything modern. And if you're in Europe, skip it unless you find it at the low end of that EUR 393 to EUR 505 range. For most people, a refurbished Dell OptiPlex or a budget Minisforum mini PC will deliver far more performance for the same or less money.

Should you buy the Lenovo ThinkCentre M625? Only if you need a silent, tiny Windows 11 Pro machine for very light tasks and you find it at the USD 180 price point. It's a thin client, not a general-purpose PC. For remote desktop work, kiosk duty, or a reception desk machine, it's fine. The fanless design is genuinely nice, and the build quality is solid.

But for anyone who wants to browse the web with more than a handful of tabs, run Office apps smoothly, or do anything beyond the basics, this isn't the machine. The 4GB of RAM is a dealbreaker for most people. You'd be better off spending the same money on a refurbished OptiPlex or stretching your budget for a Minisforum with real specs.