GMKtec NucBox G3 Pro (16GB + 512GB) vs GMKtec NucBox M5 Ultra (32GB + 512GB) comparison

Updated August 2026

Data from Amazon and official GMKtec site.

2026 verdict

In this 2026 GMKtec NucBox M5 Ultra (32GB + 512GB) vs GMKtec NucBox G3 Pro (16GB + 512GB) comparison, GMKtec NucBox M5 Ultra (32GB + 512GB) comes out ahead thanks to memory speed, memory capacity, and GPU model. Its biggest wins come from memory speed, memory capacity, and GPU model, and its broader overall balance adds more confidence to the verdict. Pick GMKtec NucBox G3 Pro (16GB + 512GB) only when price and rating are the deciding factor for your setup. That is why GMKtec NucBox M5 Ultra (32GB + 512GB) wins the verdict here.

GMKtec

GMKtec NucBox G3 Pro (16GB + 512GB)

$329.99

Buy on Amazon USA

Winner

GMKtec

GMKtec NucBox M5 Ultra (32GB + 512GB)

$559.99

Buy on Amazon USA

Price alerts

Mini PC prices change while you decide

We check the price of every Mini PC in the catalog daily and email you the drops, whichever one you pick.

Your subscription could not be saved. Please try again.

Your subscription has been successful.

Feature	GMKtec NucBox G3 Pro (16GB + 512GB)	GMKtec NucBox M5 Ultra (32GB + 512GB)	Winner
Price	$329.99	$559.99	GMKtec NucBox G3 Pro (16GB + 512GB)
Rating	4.4	4.3	GMKtec NucBox G3 Pro (16GB + 512GB)
Memory Speed	2666 MHz	3200 MT/s	GMKtec NucBox M5 Ultra (32GB + 512GB)
Memory Capacity	16 GB	32 GB	GMKtec NucBox M5 Ultra (32GB + 512GB)
GPU Model	Intel UHD Graphics (up to 1000 MHz)	AMD Radeon Graphics (8 cores, up to 2000 MHz)	GMKtec NucBox M5 Ultra (32GB + 512GB)
CPU Model	Intel Core i3-10110U	AMD Ryzen 7 7730U	Different strengths
Warranty	1 year	1 year	Tie
Memory Configuration	Dual-channel	Dual-channel	Tie
Memory Type	DDR4	DDR4	Tie
Storage Capacity	512 GB	512 GB	Tie

GMKtec

GMKtec NucBox G3 Pro (16GB + 512GB)

$329.99

Buy on Amazon USA

+ Price: $329.99
+ Rating: 4.4
- Memory Speed: 2666 MHz vs 3200 MT/s
- Memory Capacity: 16 GB vs 32 GB

Winner

GMKtec

GMKtec NucBox M5 Ultra (32GB + 512GB)

$559.99

Buy on Amazon USA

+ Memory Speed: 3200 MT/s
+ Memory Capacity: 32 GB
+ GPU Model: AMD Radeon Graphics (8 cores, up to 2000 MHz)
- Price: $559.99 vs $329.99
- Rating: 4.3 vs 4.4

Frequently Asked Questions

Which is better overall: GMKtec NucBox G3 Pro (16GB + 512GB) or GMKtec NucBox M5 Ultra (32GB + 512GB)?

GMKtec NucBox M5 Ultra (32GB + 512GB) has the stronger overall profile in this comparison, especially for memory speed, memory capacity, and GPU model.

What is the biggest difference between GMKtec NucBox G3 Pro (16GB + 512GB) and GMKtec NucBox M5 Ultra (32GB + 512GB)?

Price is one of the clearest differences: GMKtec NucBox G3 Pro (16GB + 512GB) lists $329.99, while GMKtec NucBox M5 Ultra (32GB + 512GB) lists $559.99.

Which one looks better on price?

GMKtec NucBox G3 Pro (16GB + 512GB) is listed at $329.99, while GMKtec NucBox M5 Ultra (32GB + 512GB) is listed at $559.99. GMKtec NucBox G3 Pro (16GB + 512GB) (better spec).

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

Choose GMKtec NucBox G3 Pro (16GB + 512GB) if your priority is price and rating and that matters more than memory speed.

Who should buy GMKtec NucBox M5 Ultra (32GB + 512GB)?

Choose GMKtec NucBox M5 Ultra (32GB + 512GB) if your priority is memory speed and memory capacity and that matters more than price.

Full comparison table

Compare all 60 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.