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Mini PCs · Head to head

Beelink SEi14 (32GB + 1TB) vs GMKtec NucBox G3 Pro (16GB + 512GB)

Full Mini PCs comparison in 2026

Updated November 2026
Data from the official Beelink and GMKtec sites.
2026 verdict
More cores, newer memory and Thunderbolt carry this mini PC comparison, and the Beelink SEi14 (32GB + 1TB) is the stronger machine of the two.
Beelink SEi14 (32GB + 1TB)
Winner
Beelink SEi14 (32GB + 1TB)
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A 16-core Intel Core Ultra 9 185H with Arc graphics and an AI Boost NPU sits above the GMKtec's budget i3, backed by 32GB of dual-channel DDR5-5600 that reaches 96GB, a 1TB Gen 4 drive and a Thunderbolt 4 port, all in a 750g aluminum chassis. The GMKtec NucBox G3 Pro (16GB + 512GB) is the cheaper option and the better rated by owners, offering a tiny, quiet box with upgradeable DDR4, a second M.2 slot, 2.5G Ethernet, a VESA mount and Windows 11 Pro. Buy the GMKtec NucBox G3 Pro (16GB + 512GB) for a cheap office or home-server box, and the Beelink SEi14 (32GB + 1TB) when you want workstation-class CPU power, Thunderbolt and far more memory headroom.
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The biggest differences

Where these two are furthest apart, and by how much.

  • Memory Capacity2×Beelink SEi14 (32GB + 1TB)32 GB vs 16 GB
  • Storage Capacity2×Beelink SEi14 (32GB + 1TB)1 TB vs 512 GB
FeatureBeelink SEi14 (32GB + 1TB)GMKtec NucBox G3 Pro (16GB + 512GB)Winner
Rating5.04.4Beelink SEi14 (32GB + 1TB)
Memory TypeDDR5DDR4Beelink SEi14 (32GB + 1TB)
Memory Speed5600 MT/s2666 MHzBeelink SEi14 (32GB + 1TB)
Memory Capacity32 GB16 GBBeelink SEi14 (32GB + 1TB)
Storage Capacity1 TB512 GBBeelink SEi14 (32GB + 1TB)
CPU ModelIntel Core Ultra 9 185HIntel Core i3-10110UDifferent strengths
GPU ModelIntel Arc GraphicsIntel UHD Graphics (up to 1000 MHz)Different strengths
Warranty1 year1 yearTie
Memory ConfigurationDual-channelDual-channelTie

What the differences mean

Processor class

The Beelink SEi14 (32GB + 1TB) runs a 16-core Intel Core Ultra 9 185H with Arc graphics and an AI Boost NPU, which handles virtual machines, creative software and heavy multitasking. The GMKtec NucBox G3 Pro (16GB + 512GB) runs a four-core i3-10110U with UHD graphics, aimed at office work and streaming rather than compute.

Memory

The Beelink SEi14 (32GB + 1TB) ships 32GB of DDR5-5600 in dual channel and accepts 96GB. The GMKtec NucBox G3 Pro (16GB + 512GB) starts at 16GB of DDR4-2666 but is the more flexible of the two to buy, since its two SO-DIMM slots make upgrading a simple module swap up to 64GB.

Storage

The Beelink SEi14 (32GB + 1TB) ships a 1TB PCIe Gen 4 drive. The GMKtec NucBox G3 Pro (16GB + 512GB) starts smaller at 512GB, but its free second M.2 2242 SATA slot means bulk storage can be added rather than swapped.

Connectivity and displays

The Beelink SEi14 (32GB + 1TB) adds Thunderbolt 4, HDMI 2.1 and DisplayPort 1.4 for multi-monitor desks. The GMKtec NucBox G3 Pro (16GB + 512GB) has no Thunderbolt, USB-C or DisplayPort, relying on two HDMI 1.4 outputs and a single 2.5 Gigabit port.

Price and mounting

The GMKtec NucBox G3 Pro (16GB + 512GB) is the cheaper machine and the only one of the two with a VESA mount included, which suits a behind-the-monitor install. The Beelink SEi14 (32GB + 1TB) costs more and offers no VESA bracket, no SD slot and no Kensington lock.

Which one to buy if

What owners say

Owners of both boxes care most about what fits in a small footprint. Beelink SEi14 (32GB + 1TB) owners praise the raw performance relative to size, running Proxmox with several virtual machines, Plex and even audio production work on it, and they value the 32GB of RAM, Thunderbolt 4 and the aluminum build. Their warnings are fan noise under sustained load, one or two units that felt underwhelming for the spec, an isolated Bluetooth complaint and the DisplayPort needing a 1.4-rated cable. GMKtec NucBox G3 Pro (16GB + 512GB) owners go the other way, describing a tiny, cheap box that is easy to set up and upgrade to 64GB of DDR4 and a second SSD, stable over months; they complain about the lack of USB-C, HDMI 1.4 limiting dual 4K, and a fan that becomes audible under load.

Frequently Asked Questions

Which is better overall: Beelink SEi14 (32GB + 1TB) or GMKtec NucBox G3 Pro (16GB + 512GB)?

The Beelink SEi14 (32GB + 1TB) is the far more capable mini PC, with 16 cores, 32GB of DDR5, a 1TB Gen 4 drive and Thunderbolt 4. The GMKtec NucBox G3 Pro (16GB + 512GB) is the budget pick for light office and home-server use.

What is the biggest difference between the Beelink SEi14 (32GB + 1TB) and the GMKtec NucBox G3 Pro (16GB + 512GB)?

Compute class and ports. The Beelink SEi14 (32GB + 1TB) has a 16-core Core Ultra 9 with DDR5, Thunderbolt 4 and DisplayPort, while the GMKtec NucBox G3 Pro (16GB + 512GB) has a four-core i3 with DDR4, no USB-C and two HDMI 1.4 outputs.

Which is easier to upgrade, the Beelink SEi14 (32GB + 1TB) or the GMKtec NucBox G3 Pro (16GB + 512GB)?

Both take more memory, but the GMKtec NucBox G3 Pro (16GB + 512GB) also has a free second M.2 slot for extra storage, while the Beelink SEi14 (32GB + 1TB) has a single M.2 drive and memory that tops out at 96GB.

Who should buy the GMKtec NucBox G3 Pro (16GB + 512GB)?

Budget buyers who need a small Windows 11 Pro desktop for Office work and streaming, or a cheap expandable box for Home Assistant and light Linux services.

Who should buy the Beelink SEi14 (32GB + 1TB)?

Anyone running virtual machines, creative software or a home server who wants workstation-class CPU power, 32GB of DDR5, a 1TB drive and Thunderbolt 4 in a compact aluminum case.

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