Mini PCs · Head to head

Beelink SER3 (16GB + 500GB) vs GMKtec NucBox G3 Pro (16GB + 512GB)

Full Mini PCs comparison in 2026

Updated October 2026
Data from Amazon and official Beelink and GMKtec sites.
2026 verdict
Set two budget boxes side by side and the GMKtec NucBox G3 Pro (16GB + 512GB) narrowly edges out the Beelink SER3 (16GB + 500GB), winning on memory speed and storage capacity while giving up price and warranty length.
GMKtec NucBox G3 Pro (16GB + 512GB)
Winner
GMKtec NucBox G3 Pro (16GB + 512GB)
$309.99$459.9933% OFFPrime exclusive deal

Last recorded price

Buy on Amazon USA
Both sit at the entry level of the category, the SER3 running a dual-core Ryzen 3 3200U and the G3 Pro a quad-core Core i3-10110U, and neither is built for anything heavier than browsing, documents and 4K playback. The SER3 is the cheaper of the two and backs it with a three-year warranty against the G3 Pro's one year, which matters for a machine bought purely on price. Buyers who want the longest warranty and the lowest price on a basic desktop should choose the Beelink SER3 (16GB + 500GB), while anyone who wants a bit more storage headroom and a faster processor should pick the GMKtec NucBox G3 Pro (16GB + 512GB).
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FeatureBeelink SER3 (16GB + 500GB)GMKtec NucBox G3 Pro (16GB + 512GB)Winner
Price$269.00$309.99Beelink SER3 (16GB + 500GB)
Rating4.34.4GMKtec NucBox G3 Pro (16GB + 512GB)
Warranty3 years1 yearBeelink SER3 (16GB + 500GB)
Memory Speed2400 MT/s2666 MHzGMKtec NucBox G3 Pro (16GB + 512GB)
Storage Capacity500 GB512 GBGMKtec NucBox G3 Pro (16GB + 512GB)
CPU ModelAMD Ryzen 3 3200UIntel Core i3-10110UDifferent strengths
Memory ConfigurationDual-slotDual-channelDifferent strengths
GPU ModelAMD Radeon Vega 3Intel UHD Graphics (up to 1000 MHz)Different strengths
Memory TypeDDR4DDR4Tie
Memory Capacity16 GB16 GBTie

What the differences mean

Processor cores

The SER3 runs a dual-core, four-thread Ryzen 3 3200U. The G3 Pro runs a quad-core Core i3-10110U, giving it more headroom for a few programs running at once even though both are entry-level chips.

Storage bay

The SER3 has a single M.2 2280 bay, so growing storage means replacing the drive. The G3 Pro adds a free M.2 2242 SATA bay, so a second drive can go in without removing the first.

Warranty

Three years on the Beelink SER3 (16GB + 500GB) against one year on the GMKtec NucBox G3 Pro (16GB + 512GB), worth weighing on a purchase made mostly on price.

Memory speed

A modest gap: DDR4-2400 on the SER3 against DDR4-2666 on the G3 Pro, at the same 16GB capacity.

Which one to buy if

What owners say

Owners of both entry-level boxes describe the same trade they are making, modest processors in exchange for a low price and a machine that just works out of the box. Beelink SER3 (16GB + 500GB) owners report units still running fine years later and praise how little noise or power the dual-core chip draws, though a minority hit spontaneous reboots within the first couple of months. GMKtec NucBox G3 Pro (16GB + 512GB) owners like that the memory ships as two real dual-channel modules rather than one, and that a second M.2 bay sits empty and ready, but say the fan gets audible under load and more than one reports an early fault, from a dead display output to Bluetooth needing a USB dongle.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Beelink SER3 (16GB + 500GB)
  • GMKtec NucBox G3 Pro (16GB + 512GB)

Loading price history...

Frequently Asked Questions

Which is better overall: Beelink SER3 (16GB + 500GB) or GMKtec NucBox G3 Pro (16GB + 512GB)?

The GMKtec NucBox G3 Pro (16GB + 512GB) edges ahead, winning on memory speed and storage capacity. The Beelink SER3 (16GB + 500GB) wins on price and warranty, so the choice comes down to whether budget and coverage or a bit more capacity matters more.

What is the biggest difference between the Beelink SER3 and the GMKtec NucBox G3 Pro?

Core count. The SER3 runs a dual-core AMD Ryzen 3 3200U, while the G3 Pro runs a quad-core Intel Core i3-10110U, giving the G3 Pro more multitasking headroom even though both are entry-level chips.

Which one has the longer warranty?

The Beelink SER3, with a three-year warranty against the GMKtec NucBox G3 Pro's one-year coverage.

Can either mini PC's storage be expanded?

Yes, but differently. The SER3 has a single M.2 2280 slot, so expansion means replacing the drive it ships with. The G3 Pro adds a second, empty M.2 2242 SATA bay, so a second drive can be added without removing the first.

Who should buy the Beelink SER3?

Buyers who want the lowest price and the longest warranty on a basic browsing, document and media machine, and who do not need extra storage expansion.

Who should buy the GMKtec NucBox G3 Pro?

Buyers who want slightly more processing headroom, a free second storage bay, and are comfortable with a shorter one-year warranty in exchange.

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