Lenovo ThinkCentre M625

Note: Lenovo no longer sells the ThinkCentre M625. It was a 2018 business thin client. The specifications and notes below help owners and anyone looking at a used or resold unit.

The Lenovo ThinkCentre M625 is a thin client in Lenovo’s 1-liter Tiny chassis, sold to businesses in 2018 as the ThinkCentre M625 Tiny Thin Client. It cools its AMD A4-9120C through a heatsink with no fan, so it runs silently. Lenovo built it to connect to a remote desktop or a web app rather than to run heavy local software, and it shipped with Windows 10 IoT Enterprise, Windows Embedded Standard 7, or Lenovo’s Linux-based LeTOS. The units sold on Amazon today are third-party builds with Windows 11 Pro and larger drives, and Windows 11 asks far more of the dual-core chip than a thin-client OS does.

Pros and Cons

Lenovo ThinkCentre M625 Comparison Chart

	Lenovo ThinkCentre M625	Lenovo ThinkCentre M625	Lenovo ThinkCentre M625
Price	List Price: $239.99 Amazon Prices: Check Price on Amazon	List Price: $289.99 Amazon Prices: Check Price on Amazon	List Price: $329.99 Amazon Prices: Check Price on Amazon
Version	---	---	---
Performance Rating	2.2	2.6	2.6
Operating System	Windows 10	Windows 10	Windows 10
Processor	Dual-core 1.60 Ghz (max 2.40 Ghz) AMD A4-9120C APU with Radeon R4 Graphics	Dual-core 1.60 Ghz (max 2.40 Ghz) AMD A4-9120C APU with Radeon R4 Graphics	Dual-core 1.60 Ghz (max 2.40 Ghz) AMD A4-9120C APU with Radeon R4 Graphics
GPU	Integrated AMD Radeon R4 Graphics	Integrated AMD Radeon R4 Graphics	Integrated AMD Radeon R4 Graphics
RAM	8 GB	16 GB	16 GB
Internal Storage	512 GB	512 GB	1 TB
Dimensions width x length x thickness	7.05 x 7.2 x 1.36 inches (179.07 x 182.88 x 34.54 mm)	7.05 x 7.2 x 1.36 inches (179.07 x 182.88 x 34.54 mm)	7.05 x 7.2 x 1.36 inches (179.07 x 182.88 x 34.54 mm)
Weight	2.87 lbs (1.3 kg)	2.87 lbs (1.3 kg)	2.87 lbs (1.3 kg)
WiFi	Wi-Fi 5 (802.11ac)	Wi-Fi 5 (802.11ac)	Wi-Fi 5 (802.11ac)
Bluetooth	Bluetooth 4.2	Bluetooth 4.2	Bluetooth 4.2
Ethernet	1 Ethernet port at 1 Gbps	1 Ethernet port at 1 Gbps	1 Ethernet port at 1 Gbps
HDMI	No HDMI	No HDMI	No HDMI
DisplayPort	2 DisplayPorts	2 DisplayPorts	2 DisplayPorts
VGA	No VGA Ports	No VGA Ports	No VGA Ports
USB Ports	3 USB 2.0, 3 USB 3 3x USB 3.1 Gen 1, 3x USB 2.0	3 USB 2.0, 3 USB 3 3x USB 3.1 Gen 1, 3x USB 2.0	3 USB 2.0, 3 USB 3 3x USB 3.1 Gen 1, 3x USB 2.0
Thunderbolt Ports	No	No	No
OCuLink	No	No	No
Internal SATA Ports	No SATA ports	No SATA ports	No SATA ports
Card Reader	No Card Reader	No Card Reader	No Card Reader
Headphone Jack	combo	combo	combo
Fanless	Yes	Yes	Yes
VESA Mount	Yes	Yes	Yes
In the Box	Mini PC, power adapter, documentation	Mini PC, power adapter, documentation	Mini PC, power adapter, documentation
Expandability	One DDR4 SO-DIMM slot (Lenovo lists 8GB maximum), one M.2 SSD slot, optional rear VGA or serial port	One DDR4 SO-DIMM slot (Lenovo lists 8GB maximum), one M.2 SSD slot, optional rear VGA or serial port	One DDR4 SO-DIMM slot (Lenovo lists 8GB maximum), one M.2 SSD slot, optional rear VGA or serial port

What Lenovo built

Lenovo’s PSREF specification sheet lists three processors for the M625 Tiny Thin Client: the AMD A4-9120C with Radeon R4 graphics, the A4-9120e with Radeon R3, and the E2-9000e with Radeon R2. All three are dual-core, dual-thread chips from AMD’s 7th-generation APU family, and the memory controller runs DDR4 at 1866MHz even when a 2666MHz module is installed. The A4-9120C runs at 1.6GHz base and 2.4GHz boost, and it is the chip in the units sold today.

Memory sits in a single DDR4 SO-DIMM slot, and Lenovo lists 8GB as the maximum it tested. Storage is one M.2 slot that takes a 2242 SATA drive, a 2242 NVMe drive, or a 2280 NVMe drive. Lenovo’s datasheet lists 32GB SATA and 128GB NVMe drives as the factory options, which fit a thin client that keeps its data on a server.

The front panel has two USB 3.1 Gen 1 ports (one stays powered for charging when the machine is off), a headphone and microphone combo jack, and a separate microphone jack. The rear has one more USB 3.1 Gen 1 port, three USB 2.0 ports, two DisplayPort outputs, and gigabit Ethernet on a Realtek controller with Wake-on-LAN. Two optional rear ports could carry VGA or serial connections, so some fleet units have a VGA or DB9 port and others have blank covers. Wireless came from a set of M.2 cards: most were 802.11ac with Bluetooth 4.2, and the Intel Wireless-AC 9260 option added Bluetooth 5.0. Some units shipped with no wireless card.

Security features include a discrete TPM 2.0 chip, a Kensington lock slot, a chassis intrusion switch, and BIOS settings that can limit USB ports to keyboards and mice only. Lenovo tested the chassis against MIL-STD-810G for altitude, temperature, humidity, sand and dust, vibration, and shock. The PSREF sheet rates the machine to operate from 41F to 95F and to be stored from -40F to 140F. The VESA mount bracket, vertical stand, and under-desk mount were optional accessories, not standard items in the box.

Windows 11 on reseller units

The M625 units listed on Amazon today come from third-party sellers, not Lenovo. They carry 8GB or 16GB of memory, a 512GB or 1TB SSD, and Windows 11 Pro. None of those configurations appear in Lenovo’s specification sheet. The A4-9120C is also not on Microsoft’s list of supported AMD processors for Windows 11, so Windows 11 on this machine is an unsupported install, and future feature updates may refuse to install.

The larger drive helps, since a 128GB SSD fills quickly under a full desktop OS. The processor does not change, though. A 6W dual-core chip from 2018 runs a thin-client session or a browser with a few tabs. It does not keep pace with Office, video calls, and a full browser session at once under Windows 11.

Customer Reviews

The Lenovo ThinkCentre M625 has only a handful of written Amazon reviews. Financial C. wrote that “it performs poorly in scenarios involving multitasking, large projects, or standard office software. Even basic applications tend to lag, making it difficult to maintain workflow efficiency.” They recommended it only for light personal use like browsing.

Ron Wright called it “Fantastic thus far,” adding that it “takes up less room, great for my small business!”

Where the M625 still fits

The M625 works best in the role Lenovo designed it for: a silent endpoint that connects to a Citrix, VMware, or Microsoft remote desktop, or runs one browser-based app on a kiosk or signage screen. It also suits light Linux work, where a lightweight desktop and a Linux-based thin-client OS such as LeTOS put less load on the dual-core chip than Windows 11 does.

For a small, silent mini PC that runs Windows 11 with official support, the MINIX Z100-0dB is fanless and uses an Intel N100, and the Beelink Mini S12 Pro uses the same chip with a fan. Our look at ARM fanless mini PCs and Snapdragon X2 covers where fanless designs are going, and the Mini PC Comparison Chart lists current models side by side.

Frequently Asked Questions