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Mini PCs · Head to head

GMKtec NucBox M5 Ultra (32GB + 512GB) vs GMKtec NucBox M7 Ultra (32GB + 512GB)

Full Mini PCs comparison in 2026

Updated October 2026
Data from Amazon and official GMKtec site.
2026 verdict
Two members of the same small GMKtec family, and the newer GMKtec NucBox M7 Ultra (32GB + 512GB) is the stronger mini PC of the pair on memory generation, memory speed and the graphics it carries.
GMKtec NucBox M7 Ultra (32GB + 512GB)
Winner
GMKtec NucBox M7 Ultra (32GB + 512GB)
$679.99

Last recorded price

Buy on Amazon USA
It moves to DDR5-4800 with Radeon 680M graphics, adds two USB4 ports, a front OCuLink link for an external GPU, HDMI 2.1 at 8K, quad display output and noticeably quieter cooling in an aluminum body. The GMKtec NucBox M5 Ultra (32GB + 512GB) keeps the lower price and the same dual 2.5G networking, 64GB memory ceiling, 512GB drive and second M.2 slot, running last-generation DDR4 and PCIe 3.0. Buy the GMKtec NucBox M5 Ultra (32GB + 512GB) as a budget Proxmox or firewall node, and the GMKtec NucBox M7 Ultra (32GB + 512GB) when you want a quieter, faster desktop with a real upgrade path.
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FeatureGMKtec NucBox M5 Ultra (32GB + 512GB)GMKtec NucBox M7 Ultra (32GB + 512GB)Winner
Price$559.99$679.99GMKtec NucBox M5 Ultra (32GB + 512GB)
Rating4.34.5GMKtec NucBox M7 Ultra (32GB + 512GB)
Memory TypeDDR4DDR5GMKtec NucBox M7 Ultra (32GB + 512GB)
Memory Speed3200 MT/s4800 MT/sGMKtec NucBox M7 Ultra (32GB + 512GB)
GPU ModelAMD Radeon Graphics (8 cores, up to 2000 MHz)AMD Radeon 680M (12 cores, 2200 MHz)GMKtec NucBox M7 Ultra (32GB + 512GB)
CPU ModelAMD Ryzen 7 7730UAMD Ryzen 7 PRO 6850UDifferent strengths
Warranty1 year1 yearTie
Memory ConfigurationDual-channelDual-channelTie
Memory Capacity32 GB32 GBTie
Storage Capacity512 GB512 GBTie

What the differences mean

Memory generation and speed

The GMKtec NucBox M5 Ultra (32GB + 512GB) runs DDR4-3200, while the GMKtec NucBox M7 Ultra (32GB + 512GB) moves to DDR5-4800. Both ship 32GB and accept 64GB, so the difference is bandwidth and responsiveness rather than capacity, and it shows most in virtualization and heavy multitasking.

Graphics and expansion

The GMKtec NucBox M7 Ultra (32GB + 512GB) pairs Radeon 680M graphics with two USB4 ports and a front OCuLink connector that gives an external GPU a direct PCIe Gen4 link. The GMKtec NucBox M5 Ultra (32GB + 512GB) has older Radeon graphics and no USB4 or OCuLink at all.

Displays and ports

The GMKtec NucBox M5 Ultra (32GB + 512GB) drives three screens over HDMI 2.0, DisplayPort 1.4 and USB-C. The GMKtec NucBox M7 Ultra (32GB + 512GB) drives four, with HDMI 2.1 up to 8K, DisplayPort 2.0 and DisplayPort carried over each USB4 port.

Storage speed

Both machines take two M.2 2280 drives and ship with a 512GB SSD, so the second slot is equally useful on each. The GMKtec NucBox M7 Ultra (32GB + 512GB) runs those slots at PCIe 4.0, while the GMKtec NucBox M5 Ultra (32GB + 512GB) runs PCIe 3.0.

Noise and build

The GMKtec NucBox M7 Ultra (32GB + 512GB) uses an aluminum chassis and the Hyper Ice Chamber 2.0 dual-fan design, which owners describe as quiet even under load. The GMKtec NucBox M5 Ultra (32GB + 512GB) is a plastic 528g box whose fans become audible during sustained gaming.

Which one to buy if

What owners say

Owners of both GMKtec NucBox models lead with the same two compliments: how quiet the machine stays during office work and virtualization, and how much performance the eight-core chip delivers for the money. GMKtec NucBox M5 Ultra (32GB + 512GB) owners single out the dual 2.5G ports for pfSense, Proxmox and Kubernetes, clean Linux installs and support that replaces units quickly, while their warnings are DDR4 and PCIe 3.0, integrated graphics that run hot in gaming, a one-year warranty and an isolated sleep-wake bug that forces a reset. GMKtec NucBox M7 Ultra (32GB + 512GB) owners talk about the front OCuLink port as an upgrade path, the tool-free second drive and the same responsive support, and mention Windows activation hitches and one unit that failed early.

Upgrading from the GMKtec NucBox M5 Ultra (32GB + 512GB)?

Moving from the GMKtec NucBox M5 Ultra (32GB + 512GB) to the GMKtec NucBox M7 Ultra (32GB + 512GB) buys faster memory, newer storage, better graphics and quieter cooling. The DDR4-3200 and PCIe 3.0 platform gives way to DDR5-4800 and PCIe 4.0, Radeon 680M graphics replaces the older Radeon block, and two USB4 ports plus the front OCuLink connector open external GPUs and single-cable docks. Display output improves from three to four screens with HDMI 2.1 at 8K. What does not change is the 64GB memory and 512GB storage ceiling, the dual 2.5G networking and the one-year warranty. If your M5 Ultra already runs Proxmox or a Linux desktop quietly, there is little to gain; the step up is for graphics, docking and a quieter desk.

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.

  • GMKtec NucBox M5 Ultra (32GB + 512GB)
  • GMKtec NucBox M7 Ultra (32GB + 512GB)

Loading price history...

Frequently Asked Questions

Which is better overall: GMKtec NucBox M5 Ultra (32GB + 512GB) or GMKtec NucBox M7 Ultra (32GB + 512GB)?

The GMKtec NucBox M7 Ultra (32GB + 512GB) is the better mini PC, with DDR5 memory, PCIe 4.0 storage, Radeon 680M graphics, USB4 and OCuLink. The GMKtec NucBox M5 Ultra (32GB + 512GB) stays the value pick for a cheap virtualisation or firewall node.

What is the biggest difference between the GMKtec NucBox M5 Ultra (32GB + 512GB) and the GMKtec NucBox M7 Ultra (32GB + 512GB)?

The platform generation. The GMKtec NucBox M5 Ultra (32GB + 512GB) is DDR4-3200 with PCIe 3.0 and no USB4, while the GMKtec NucBox M7 Ultra (32GB + 512GB) is DDR5-4800 with PCIe 4.0, two USB4 ports and an OCuLink connector.

Can either GMKtec NucBox M5 Ultra (32GB + 512GB) or GMKtec NucBox M7 Ultra (32GB + 512GB) take an external GPU?

Only the GMKtec NucBox M7 Ultra (32GB + 512GB) has a front OCuLink port that gives an eGPU dock a PCIe Gen4 link. The GMKtec NucBox M5 Ultra (32GB + 512GB) has no OCuLink or USB4, so external graphics are not practical.

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

Anyone who wants a quiet, expandable eight-core box for Proxmox, pfSense, Kubernetes or office work at the lowest price, and can live with DDR4, PCIe 3.0 and no USB4.

Who should buy the GMKtec NucBox M7 Ultra (32GB + 512GB)?

Buyers who want a quieter aluminum desktop with DDR5 and PCIe 4.0, four display outputs, USB4 docks and an OCuLink path to an external GPU.

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