Winner
5% OFF
$3799.00
$3999.00
Updated October 2026
Data from the official Geekom and GMKtec sites.
2026 verdict
The Geekom A9 Mega (128GB + 2TB) is the flagship of this mini PC pair and wins almost every row but price, led by Radeon 8060S graphics, an XDNA 2 NPU and 128GB of high-bandwidth LPDDR5X shared with the GPU.
A 2TB Gen 4 array across two M.2 slots with RAID support, dual 2.5G Ethernet, Wi-Fi 7, two USB4 ports and a fingerprint reader round out a machine built for local AI, rendering and heavy creative work. The GMKtec NucBox G3 Pro (16GB + 512GB) takes the price row and offers the upgradeable, low-power alternative: 16GB of DDR4 that reaches 64GB, a free M.2 slot, 2.5G Ethernet and a VESA mount for office and home-server duty. Buy the GMKtec NucBox G3 Pro (16GB + 512GB) for everyday work and light servers, and the Geekom A9 Mega (128GB + 2TB) when a large unified memory pool and top-tier integrated graphics are the point.
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| Feature | Geekom A9 Mega (128GB + 2TB) | GMKtec NucBox G3 Pro (16GB + 512GB) | Winner |
|---|---|---|---|
| Price | $3799.00 | $309.99 | GMKtec NucBox G3 Pro (16GB + 512GB) |
| Rating | 4.6 | 4.4 | Geekom A9 Mega (128GB + 2TB) |
| Warranty | 3 years | 1 year | Geekom A9 Mega (128GB + 2TB) |
| Memory Type | LPDDR5X | DDR4 | Geekom A9 Mega (128GB + 2TB) |
| Memory Speed | 8000 MT/s | 2666 MHz | Geekom A9 Mega (128GB + 2TB) |
| Memory Capacity | 128 GB | 16 GB | Geekom A9 Mega (128GB + 2TB) |
| Storage Capacity | 2 TB | 512 GB | Geekom A9 Mega (128GB + 2TB) |
| CPU Model | AMD Ryzen AI Max+ 395 | 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 (128GB + 2TB) pairs Radeon 8060S graphics with an XDNA 2 NPU, and the 128GB of memory is shared with the GPU so it can hold large local models. The GMKtec NucBox G3 Pro (16GB + 512GB) has basic Intel UHD graphics and no NPU, which keeps it to office tasks and media.
Memory
The Geekom A9 Mega (128GB + 2TB) ships 128GB of LPDDR5X at 8000 MT/s, the fastest and largest pool in this pairing. The GMKtec NucBox G3 Pro (16GB + 512GB) starts at 16GB of DDR4 but is the more flexible over time, since its two SO-DIMM slots can be taken to 64GB.
Storage
The Geekom A9 Mega (128GB + 2TB) arrives with 2TB across two M.2 2280 PCIe Gen 4 slots and supports RAID 0 or RAID 1. The GMKtec NucBox G3 Pro (16GB + 512GB) starts at 512GB and its free slot takes a shorter M.2 2242 SATA drive, which is cheaper but slower.
Ports and displays
The Geekom A9 Mega (128GB + 2TB) has two USB4 Type-C ports at 40Gbps, two HDMI 2.1 outputs, five USB-A and USB-C ports, dual 2.5G Ethernet, Wi-Fi 7 and an SDXC reader. The GMKtec NucBox G3 Pro (16GB + 512GB) has no USB-C, Wi-Fi 6, one 2.5G port and two HDMI outputs.
Price and warranty
The GMKtec NucBox G3 Pro (16GB + 512GB) is far cheaper and its one-year warranty matches its price. The Geekom A9 Mega (128GB + 2TB) costs many times more, and its three-year warranty matches hardware meant to run hard for years.
Which one to buy if
- you need a cheap desktop for Office work and streaming
The GMKtec NucBox G3 Pro (16GB + 512GB) covers that workload and costs far less than the Geekom.
- you run large local AI models or GPU rendering
Only the Geekom A9 Mega (128GB + 2TB) offers a Radeon 8060S, an NPU and 128GB of unified memory.
- you want to add memory and storage over time
The GMKtec NucBox G3 Pro (16GB + 512GB) has upgradeable DDR4 and a free M.2 slot; the Geekom's 128GB is soldered.
- you plan a 2TB or RAID storage setup
The Geekom A9 Mega (128GB + 2TB) ships 2TB across two Gen 4 slots with RAID 0 and RAID 1 support.
Winner
5% OFF
$3799.00
$3999.00
- + Rating: 4.6
- + Warranty: 3 years
- + Memory Type: LPDDR5X
- - Price: $3799.00 vs $309.99
33% OFF
Prime exclusive deal$309.99
$459.99
- + Price: $309.99
- - Rating: 4.4 vs 4.6
- - Warranty: 1 year vs 3 years
What owners say
Owners of the GMKtec NucBox G3 Pro (16GB + 512GB) describe a palm-sized box that is ready within minutes, with Windows 11 Pro preinstalled and no trial software. They value how upgradeable it is for the money: 16GB of DDR4 arrives as two matched modules in dual-channel, the lid lifts without tools, and the second M.2 slot takes an extra drive. Four USB-A ports, two HDMI outputs and the 2.5 Gigabit LAN earn steady praise, and several report stable daily use for months. Their complaints are the complete lack of USB-C, HDMI 1.4 limiting dual 4K to a low refresh, a fan that turns audible under load, thin documentation and a few early failures.
Frequently Asked Questions
Which is better overall: Geekom A9 Mega (128GB + 2TB) or GMKtec NucBox G3 Pro (16GB + 512GB)?
The Geekom A9 Mega (128GB + 2TB) is the more powerful mini PC by a wide margin, with Radeon 8060S graphics, an NPU, 128GB of unified memory and 2TB of RAID-capable storage. The GMKtec NucBox G3 Pro (16GB + 512GB) is the affordable, upgradeable pick for ordinary work.
What is the biggest difference between the Geekom A9 Mega (128GB + 2TB) and the GMKtec NucBox G3 Pro (16GB + 512GB)?
The memory and graphics class. The Geekom A9 Mega (128GB + 2TB) has 128GB of high-bandwidth LPDDR5X shared with a Radeon 8060S, while the GMKtec NucBox G3 Pro (16GB + 512GB) has 16GB of upgradeable DDR4 feeding basic Intel UHD graphics.
Can the memory be upgraded on the Geekom A9 Mega (128GB + 2TB) or the GMKtec NucBox G3 Pro (16GB + 512GB)?
Only the GMKtec NucBox G3 Pro (16GB + 512GB), which uses two DDR4 slots and supports 64GB. The Geekom A9 Mega (128GB + 2TB) memory is soldered at 128GB, the maximum the machine accepts.
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 an expandable low-power box for Home Assistant and light servers.
Who should buy the Geekom A9 Mega (128GB + 2TB)?
Anyone running large local AI models, 3D rendering or GPU-heavy creative work who needs a huge unified memory pool and top-tier integrated graphics in a compact machine.
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