Updated September 2026
Data from Amazon and official Geekom and GMKtec sites.
2026 verdict
Twice the RAM is the whole argument, and the GMKtec NucBox G3 Pro (16GB + 512GB) is the stronger budget mini PC.
It leads on 16GB versus 8GB and on 512GB versus 256GB of storage, which is what keeps a Windows desktop usable with a browser full of tabs. The Geekom Mini Air12 (Pentium 7505 8GB + 256GB) is cheaper, carries a three-year warranty against one year, and stays the lighter Pentium Gold 7505 option. Take the G3 Pro for everyday office work; take the Mini Air12 when the brief is kiosk, classroom or a VESA-mounted terminal that barely needs to multitask.
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| Feature | Geekom Mini Air12 (Pentium 7505 8GB + 256GB) | GMKtec NucBox G3 Pro (16GB + 512GB) | Winner |
|---|---|---|---|
| Price | $269.10 | $319.98 | Geekom Mini Air12 (Pentium 7505 8GB + 256GB) |
| Rating | 4.3 | 4.4 | GMKtec NucBox G3 Pro (16GB + 512GB) |
| Warranty | 3 years | 1 year | Geekom Mini Air12 (Pentium 7505 8GB + 256GB) |
| Memory Capacity | 8 GB | 16 GB | GMKtec NucBox G3 Pro (16GB + 512GB) |
| Storage Capacity | 256 GB | 512 GB | GMKtec NucBox G3 Pro (16GB + 512GB) |
| CPU Model | Intel Pentium Gold 7505 | Intel Core i3-10110U | Different strengths |
| GPU Model | Intel UHD Graphics (48 EUs) | Intel UHD Graphics (up to 1000 MHz) | Different strengths |
| Memory Configuration | Dual-channel | Dual-channel | Tie |
| Memory Type | DDR4 | DDR4 | Tie |
10% OFF
$269.10
$299.00
- + Price: $269.10
- + Warranty: 3 years
- - Rating: 4.3 vs 4.4
- - Memory Capacity: 8 GB vs 16 GB
Winner
30% OFF
$319.98
$459.99
- + Rating: 4.4
- + Memory Capacity: 16 GB
- + Storage Capacity: 512 GB
- - Price: $319.98 vs $269.10
- - Warranty: 1 year vs 3 years
Frequently Asked Questions
Which is better overall: Geekom Mini Air12 (Pentium 7505 8GB + 256GB) or GMKtec NucBox G3 Pro (16GB + 512GB)?
The GMKtec NucBox G3 Pro (16GB + 512GB) is better overall on memory capacity and storage. The Geekom Mini Air12 (Pentium 7505 8GB + 256GB) wins on price and on its 3 year warranty.
What is the biggest difference between Geekom Mini Air12 (Pentium 7505 8GB + 256GB) and GMKtec NucBox G3 Pro (16GB + 512GB)?
Configured memory and storage. The GMKtec NucBox G3 Pro (16GB + 512GB) ships 16GB of DDR4 and a 512GB SSD. The Geekom Mini Air12 (Pentium 7505 8GB + 256GB) ships 8GB of DDR4 and a 256GB SSD.
Can you expand RAM on both of these mini PCs?
Yes. The GMKtec NucBox G3 Pro (16GB + 512GB) uses SODIMM slots up to 64GB. The Geekom Mini Air12 (Pentium 7505 8GB + 256GB) uses SODIMM slots up to 32GB.
Who should buy the GMKtec NucBox G3 Pro (16GB + 512GB)?
Buyers who want 16GB and 512GB in a cheap Windows 11 Pro mini PC, and who can live with a 1 year warranty, should choose the GMKtec NucBox G3 Pro (16GB + 512GB).
Who should buy the Geekom Mini Air12 (Pentium 7505 8GB + 256GB)?
Buyers who want the lowest spend, a three-year warranty and a quiet Pentium box for browsing or a kiosk should choose the Geekom Mini Air12 (Pentium 7505 8GB + 256GB).
Full comparison table
Compare all 65 Mini PCs side by side
You are looking at two of them. The full table lines up all Mini PCs in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 65 Mini PCs
- 41 specs compared
- 38 filters
BeelinkGTi15 Ultra (96GB + 2TB)
$1949.00
MINISFORUMX1 Lite-255 (32GB + 1TB)
$699.00
AsusNUC 15 Pro+ (Ultra 9 32GB + 1TB)
$1899.00
AsusNUC 13 Pro Slim (i7 16GB + 512GB)
$949.99
AsusROG GR70 (RTX 5070 32GB + 2TB)
$2599.00
BeelinkMini S12 Pro (N100 16GB + 500GB)
$339.00
AsusNUC 15 Pro Slim (Core 5 16GB + 512GB)
$1064.92
AppleMac Mini (M4 Pro 24GB + 512GB)
$1569.00
GeekomIT13 2026 Edition (Ultra 7 32GB + 1TB)
$1399.00
BeelinkSER8 (32GB + 1TB)
$939.00
BeelinkSER9 Pro (24GB + 1TB)
$689.00
AppleMac Mini (M4 16GB + 512GB)
$979.99
AppleMac Mini (M2 Pro 16GB + 512GB)
$1273.46
BeelinkSER5 Pro (16GB + 480GB)
$389.00
BeelinkSEi14 (32GB + 1TB)
$829.00
GMKtecNucBox M7 Ultra (32GB + 512GB)
$599.99
GeekomGT1 Mega Ultra 9
$1149.00
BeelinkMini S12 (N95 8GB + 480GB)
$289.00
BeelinkEQi 304 (24GB + 512GB)
$629.00
GeekomA9 Mega (128GB + 2TB)
5% OFF$3999.00$3799.04
Mini PCsGeekomA5 (Ryzen 5 16GB + 512GB)
4.2(165)12% OFF$395.10$349.00
Mini PCsGeekomA5 Pro (Ryzen 5 16GB + 512GB)
4.4(637)$569.00
Mini PCsGeekomA5 Pro 2026 Edition (16GB + 1TB)
4.3(678)$569.00
Mini PCsGeekomA6 (Ryzen 7 16GB + 1TB)
4.4(445)$599.00
Mini PCsGeekomA7 Max (Ryzen 9)
4.2(75)$697.00
Mini PCsGeekomA8 (Ryzen 7 16GB + 1TB)
4.3(414)$639.00
Mini PCsGeekomA8 Max (Ryzen 7)
4.1(46)$799.00
Mini PCsGeekomA8 Max (Ryzen 9)
4.3(147)14% OFF$1099.00$949.00
Mini PCsGeekomA9 Max (HX 370)
4.3(697)10% OFF$1299.00$1169.10
Mini PCsGeekomA9 Max (HX 470)
4.3(640)$1599.00- Mini PCsGeekom
A9 Mega (128GB + 2TB)
4.5(2)5% OFF$3999.00$3799.04 
Mini PCsGeekomA9 Mega (64GB + 1TB)
4.3(672)$2399.00
Mini PCsGeekomAX8 Max (16GB + 1TB)
4.3(346)10% OFF$649.00$584.10
Mini PCsGeekomGT1 Mega Ultra 5
4.4(29)$1299.00- Mini PCsGeekom
GT1 Mega Ultra 9
4.5(369)$1149.00 
Mini PCsGeekomIT13 (1TB)
4.4(636)16% OFF$799.00$674.10- Mini PCsGeekom
IT13 2026 Edition (Ultra 7 32GB + 1TB)
4.8(9)$1399.00 
Mini PCsGeekomIT13 (2TB)
4.4(636)$599.00
Mini PCsGeekomIT15 (32GB + 1TB)
4.4(637)10% OFF$1299.00$1169.10- Mini PCsGeekom
Mini Air12 (Pentium 7505 8GB + 256GB)
4.3(346)10% OFF$299.00$269.10
Mini PCsGMKtecG10 (16GB + 512GB)
4.1(293)$319.99
Mini PCsGMKtecNucBox G3 Pro (16GB + 512GB)
4.4(1,662)30% OFF$459.99$319.98
Mini PCsGMKtecNucBox G3S (8GB + 256GB)
4.2(1,820)$249.99
Mini PCsGMKtecNucBox M2 Pro S (16GB + 1TB)
4.4(749)$499.98
Mini PCsGMKtecNucBox M5 Ultra (32GB + 512GB)
4.3(985)$559.99
Mini PCsGMKtecNucBox M6 Ultra (32GB + 1TB)
4.2(476)$629.99- Mini PCsGMKtec
NucBox M7 Ultra (32GB + 512GB)
4.5(1,018)$599.99