Winner
Updated October 2026
Data from Amazon and official Geekom and GMKtec sites.
2026 verdict
The Geekom A9 Mega (64GB + 1TB) is the specialist of this mini PC pair, built for local AI and graphics-heavy work rather than desks that only need office software.
It carries a Radeon 8060S graphics block, an XDNA 2 NPU and 64GB of high-bandwidth LPDDR5X at 7500 MT/s shared with the GPU, a 1TB Gen 4 drive with a second M.2 slot and RAID support, dual 2.5G Ethernet, Wi-Fi 7 and two USB4 ports, all backed by a three-year warranty. The GMKtec NucBox G3 Pro (16GB + 512GB) wins on price and on the owner rating instead: it is a pale, palm-sized office and home-server box with upgradeable DDR4 to 64GB, a free second M.2 slot, 2.5G Ethernet and a VESA mount. Buy the GMKtec NucBox G3 Pro (16GB + 512GB) for browsing, Office work, a Home Assistant node or a first desktop, and reserve the Geekom A9 Mega (64GB + 1TB) for large local models, rendering or anyone who needs that unified memory pool.
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| Feature | Geekom A9 Mega (64GB + 1TB) | GMKtec NucBox G3 Pro (16GB + 512GB) | Winner |
|---|---|---|---|
| Price | $2399.00 | $303.61 | GMKtec NucBox G3 Pro (16GB + 512GB) |
| Rating | 4.3 | 4.4 | GMKtec NucBox G3 Pro (16GB + 512GB) |
| Warranty | 3 years | 1 year | Geekom A9 Mega (64GB + 1TB) |
| Memory Type | LPDDR5X | DDR4 | Geekom A9 Mega (64GB + 1TB) |
| Memory Speed | 7500 MT/s | 2666 MHz | Geekom A9 Mega (64GB + 1TB) |
| Memory Capacity | 64 GB | 16 GB | Geekom A9 Mega (64GB + 1TB) |
| Storage Capacity | 1 TB | 512 GB | Geekom A9 Mega (64GB + 1TB) |
| CPU Model | AMD Ryzen AI Max+ 388 | Intel Core i3-10110U | Different strengths |
| Memory Configuration | Soldered (non-upgradeable) | Dual-channel | Different strengths |
| GPU Model | AMD Radeon 8060S Graphics | Intel UHD Graphics (up to 1000 MHz) | Different strengths |
What the differences mean
Graphics and AI
The Geekom A9 Mega (64GB + 1TB) is built around a Radeon 8060S graphics block and an XDNA 2 NPU, which is what lets it run large local models and GPU-accelerated work. The GMKtec NucBox G3 Pro (16GB + 512GB) uses basic Intel UHD graphics with no NPU, so it is an office and media machine only.
Memory design
The GMKtec NucBox G3 Pro (16GB + 512GB) uses standard DDR4 SO-DIMM modules and can be taken to 64GB, so memory is a cheap upgrade later. The Geekom A9 Mega (64GB + 1TB) uses 64GB of soldered LPDDR5X at 7500 MT/s shared with the graphics; it is far faster, but that is the ceiling for the life of the machine.
Storage and expansion
The GMKtec NucBox G3 Pro (16GB + 512GB) boots from 512GB and leaves a second M.2 2242 SATA slot free for extra storage. The Geekom A9 Mega (64GB + 1TB) starts at 1TB on PCIe Gen4 and supports a second drive with RAID 0 or RAID 1, which suits bulk media or redundancy.
Networking and ports
The Geekom A9 Mega (64GB + 1TB) adds dual 2.5G Ethernet, Wi-Fi 7, Bluetooth 5.4 and two USB4 Type-C ports at 40Gbps. The GMKtec NucBox G3 Pro (16GB + 512GB) has a single 2.5G port, Wi-Fi 6, four USB-A ports and no USB-C at all.
Price and warranty
The GMKtec NucBox G3 Pro (16GB + 512GB) is the affordable option and the better rated of the two, but it carries a one-year warranty. The Geekom A9 Mega (64GB + 1TB) costs far more and is covered for three years, matching the class of hardware underneath.
Which one to buy if
- you need a cheap desktop for Office work, browsing and 4K streaming
The GMKtec NucBox G3 Pro (16GB + 512GB) handles that workload and costs far less than the Geekom.
- you run Home Assistant, a small Linux server or an always-on box
The GMKtec NucBox G3 Pro (16GB + 512GB) has upgradeable memory, a free M.2 slot, 2.5G Ethernet and a low-power chip suited to the role.
- you want to run large local AI models on the machine
The Geekom A9 Mega (64GB + 1TB) pairs an NPU with 64GB of unified memory that the graphics can draw on.
- you do 3D rendering or GPU-accelerated creative work
The Geekom A9 Mega (64GB + 1TB) carries Radeon 8060S graphics well beyond anything the G3 Pro's UHD graphics can do.
Winner
$2399.00
- + Warranty: 3 years
- + Memory Type: LPDDR5X
- + Memory Speed: 7500 MT/s
- - Price: $2399.00 vs $303.61
- - Rating: 4.3 vs 4.4
34% OFF
Prime exclusive deal$303.61
$459.99
- + Price: $303.61
- + Rating: 4.4
- - Warranty: 1 year vs 3 years
- - Memory Type: DDR4 vs LPDDR5X
What owners say
Owners of the GMKtec NucBox G3 Pro (16GB + 512GB) describe it as tiny, quick to set up and free of trial software, with Windows 11 Pro ready in minutes. They value how upgradeable it is for the money: the 16GB of DDR4 ships as two matched modules in dual-channel, the lid comes off without tools, and the second M.2 slot takes an extra drive. The four USB-A ports, two HDMI outputs and 2.5 Gigabit LAN get credit, and several report stable daily use for months. Their complaints are the total absence of USB-C, HDMI 1.4 limiting dual 4K to a low refresh, a fan that becomes audible under load, sparse documentation and a few early failures.
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.
- Geekom A9 Mega (64GB + 1TB)
- GMKtec NucBox G3 Pro (16GB + 512GB)
Loading price history...
Frequently Asked Questions
Which is better overall: Geekom A9 Mega (64GB + 1TB) or GMKtec NucBox G3 Pro (16GB + 512GB)?
They serve different jobs, and the Geekom A9 Mega (64GB + 1TB) wins on capability while the GMKtec NucBox G3 Pro (16GB + 512GB) wins on price and owner rating. Choose the Geekom for AI and graphics work, and the GMKtec for cheap office and home-server duty.
What is the biggest difference between the Geekom A9 Mega (64GB + 1TB) and the GMKtec NucBox G3 Pro (16GB + 512GB)?
The memory and graphics class. The Geekom A9 Mega (64GB + 1TB) has 64GB of soldered LPDDR5X shared with a Radeon 8060S, while the GMKtec NucBox G3 Pro (16GB + 512GB) has upgradeable DDR4 feeding basic Intel UHD graphics.
Can you upgrade the memory in these two mini PCs?
Yes on the GMKtec NucBox G3 Pro (16GB + 512GB), which uses two DDR4 SO-DIMM slots and accepts up to 64GB. No on the Geekom A9 Mega (64GB + 1TB), whose 64GB of LPDDR5X is soldered and permanently caps the machine.
Who should buy the GMKtec NucBox G3 Pro (16GB + 512GB)?
Budget buyers who need a small Windows 11 Pro desktop for Office work, browsing and 4K streaming, or an expandable low-power box for Home Assistant and light server tasks.
Who should buy the Geekom A9 Mega (64GB + 1TB)?
Anyone running local AI models, 3D rendering or heavy GPU-accelerated work who needs a large unified memory pool and capable integrated graphics in a compact machine.
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