Beelink, GMKtec and Minisforum are the three consumer mini PC brands you'll see most often next to off-lease ThinkCentre, OptiPlex and EliteDesk units. All three are based in Shenzhen. Beelink was founded in 2011 and is a subsidiary of Shenzhen AZW Technology, which also sells mini PCs under the Trigkey name. Minisforum, the trade name of Shenzhen Meigao Electronic Equipment, was founded in 2018. GMKtec, the trade name of Shenzhen GMK Technology, was founded in 2019.
They differ from the business brands in ways that matter on the used market. Lenovo, Dell and HP build fleets of a few chassis designs for years and publish detailed spec sheets and service manuals for each. The consumer brands release many more models, refresh them often, and document them more thinly. In exchange you get newer CPUs, faster networking and more storage slots in the same footprint. If you are still choosing between the two worlds, start with ThinkCentre vs OptiPlex vs EliteDesk.
Product lines at a glance
- Beelink: the SER series uses AMD Ryzen mobile chips (the SER5 tested by CNX Software has a Ryzen 5 5600H); the EQ series is built around efficient Intel chips (the EQ12 uses an N100, the EQ14 an N150); the SEi and GTi lines use Intel Core chips, such as the Core i7-12650H in the SEi12.
- GMKtec: products carry the NucBox name. The G series covers budget Intel N-series and similar boxes; the M series uses AMD Ryzen mobile chips (for example the M5 Ultra with a Ryzen 7 7730U and the M7 Ultra with a Ryzen 7 PRO 6850U); the K series covers higher-end Intel and AMD models such as the K9 with a Core Ultra 5 125H and the K8 Plus with a Ryzen 7 8845HS; the EVO line includes the Ryzen AI Max+ 395 EVO-X2.
- Minisforum: the UM series uses AMD Ryzen chips (the UM790 Pro has a Ryzen 9 7940HS); the UN series uses Intel N-series chips; the EM series covers compact AMD models such as the EM780; the MS series covers more expandable workstation-style boxes like the MS-01.
Model names are not a reliable guide to what's inside. A single model name can cover more than one CPU or memory configuration, so always confirm the exact CPU from the listing photos or the seller's system information screen.
Soldered vs socketed RAM
This is the most important spec to check, because soldered memory caps the machine for life. The higher-end models we checked from all three brands use standard SO-DIMMs. Beelink's SER5 has two DDR4 SO-DIMM slots that CNX Software notes support up to 64 GB. Minisforum lists two DDR5 SO-DIMM slots and a 64 GB maximum for the UM790 Pro. GMKtec lists two DDR5-5600 SO-DIMM slots for the K9 (up to 96 GB) and the K8 Plus (up to 128 GB).
Budget boxes are where the variation is. Intel's N-series chips support DDR4, DDR5 and LPDDR5, but only through one channel, and CNX Software warns that some Alder Lake-N mini PCs ship with soldered LPDDR5 while others only accept DDR4 modules. Beelink's EQ12 has a single DDR5 SO-DIMM slot. Newer AMD and Intel mobile chips (Ryzen 7040/8040, Core Ultra) also support soldered LPDDR5X. As a rule, if the spec sheet says LPDDR4X, LPDDR5 or LPDDR5X, assume the memory is on the board and not upgradeable.
BIOS, drivers and support
None of the three publishes a per-model spec database like Lenovo's PSREF, but all three host downloads:
- Beelink runs a download center at dr.bee-link.cn for drivers and BIOS files, plus a user forum.
- GMKtec's drivers-and-software page organizes driver packages, FAQs and setup videos by model. The list covers many but not all models, so check that your exact model is on it before you rely on it.
- Minisforum's support page offers drivers, BIOS updates and manuals organized by model, covering lines from the UM560 and UM690 through the UM790 Pro, EM780 and MS-01.
For a used unit, download the BIOS and driver package for your exact model as soon as you have it, and note the BIOS version shown at boot. Warranty terms are set by each brand's warranty policy; check whether coverage transfers to a second owner before counting on it. Each brand also publishes its own return policy; read it before buying new or open-box.
Linux and Proxmox notes
Independent testing shows these boxes generally run Linux well, with the usual weak spot being Wi-Fi rather than anything that matters on a server. CNX Software ran Ubuntu 22.04.2 on the Beelink EQ12 with working Ethernet and 4K60 video playback but had trouble with the Wi-Fi driver on that kernel. On the same box it ran Proxmox VE with pfSense and TrueNAS as virtual machines. Its Ubuntu 22.04.1 test on the Beelink SER5 found audio, Wi-Fi, Bluetooth and Ethernet all working, with some BIOS-related errors in the system log that did not affect use.
Network chips differ by model and are worth checking for a router or Proxmox host. CNX identified Intel I225-V controllers on the EQ12's two 2.5GbE ports, while GMKtec lists Realtek 2.5GbE for the K9's two ports. Search your exact NIC model together with the firewall or hypervisor you plan to run before committing. Our Proxmox homelab and network services pages cover the rest.
Noise and power
Measured numbers are scarce and setups differ, so treat these as examples rather than brand traits. CNX Software measured the N100-based EQ12 at 12.1 W idle under Windows and 13.9 W under Ubuntu, 26.5 to 28.9 W under CPU stress, and a maximum of 34.3 dBA on its sound meter. The Ryzen 5 5600H SER5 measured 5.3 W idle in Windows and 3.7 W in Ubuntu, 46.5 W under stress in Windows, and reached 38 dBA, which CNX described as hardly audible. A lower-power chip does not guarantee a lower idle draw; firmware power settings and the board design matter as much.
What to check before buying used
- The exact CPU and memory configuration, from a screenshot of system information or the BIOS, not just the listing title.
- Whether RAM is socketed or soldered, and DDR4 versus DDR5, before you buy upgrade modules.
- M.2 slot count, length (2280 vs 2242) and PCIe lanes; the EQ12's NVMe slot, for example, runs on one lane.
- The NIC chipset and speed if the box will route traffic or host VMs.
- The power supply: many of these boxes use an external 19 V adapter (Minisforum lists DC 19V for the UM790 Pro; GMKtec lists 19 V at 6.32 A, 120 W, for the K9 and K8 Plus), while the Beelink EQ14 has a built-in power supply. Make sure the right adapter is included.
- Fan behavior under load and any rattle or bearing noise.
- That the model appears on the maker's download page, so you can get its BIOS and drivers later.
Which brand?
Pick the model, not the brand. Each company makes everything from fanless N-series boxes to high-end Ryzen and Core Ultra machines, and quality and features vary more between models than between brands. Favor units with SO-DIMM slots, two M.2 slots, Intel or well-supported 2.5GbE NICs and a BIOS download page for the exact model. For N-series boxes specifically, see N100 vs N150 vs N305, and run through the used mini PC buying checklist when the unit arrives.
