Lenovo ThinkCentre M900 review: specs, options & used prices

What this machine is

As used-market small form factors go, the Lenovo ThinkCentre M900 is a known quantity: standard parts, a wide configuration ladder, and steady supply on the secondary market.

Corporate fleets retire machines like this in batches, which is why the used supply is steady and prices stay predictable.

Tracked used listings cluster around a median of $70 (7 active listings at the time of writing).

Configurations you will actually see

The CPU options we track for the ThinkCentre M900 are the Core i5-6500, Core i5-6500T and Core i7-6700T. These are 6th-generation Intel Core parts. This generation predates official Windows 11 support, worth factoring in if a modern OS baseline matters to you. T-suffixed variants are the lower-wattage versions of the same chips: cooler and quieter, a little slower.

Memory options run from 8 GB to 16 GB (8 GB, 12 GB, 16 GB). 8 GB is workable for one person; 16 GB is the comfortable setting for typical office and home use.

Solid-state storage options include 128GB SSD.

Upgrade path and running costs

The full-size case leaves room for standard parts and a conventional power supply, which makes this one of the easiest classes of machine to upgrade and repair.

Who it fits

If the task is browsing, office documents, video calls, or a kiosk/POS role, the ThinkCentre M900 does the job at a low sensible price. It predates official Windows 11 support, which makes it a natural Linux or light-duty candidate — a real factor if a modern OS baseline is required.

The spec sheet carries the full option ladder and tracked prices; for context, browse the desktop catalog or the Lenovo desktops page.

Verdict

The ThinkCentre M900 is not exciting, and that is the point: a known quantity with a known configuration ladder.

Buy it when you need a cheap, repairable machine for its class of work, and verify the configuration before paying — RAM and storage vary widely between listings. Tracked prices span $60 to $160, and most of that spread is configuration, not condition.

Our composite LB Score currently sits at 14/100 — a score that mostly reflects the platform age — use it to compare like with like, not against modern hardware.