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GMKtec NucBox M5 Ultra AMD Ryzen™ 7 7730U Mini PC vs GMKtec NucBox M6 Ultra Mini PC AMD Ryzen 5 7640HS

Researched, not hands-on tested.How we review ›

both judged against mini PCs at a similar price

The GMKtec NucBox M5 Ultra AMD Ryzen™ 7 7730U Mini PC scores 7.0/10 overall, ahead of the GMKtec NucBox M6 Ultra Mini PC AMD Ryzen 5 7640HS at 6.4/10.

The GMKtec NucBox M5 Ultra AMD Ryzen™ 7 7730U Mini PC leads on CPU performance, upgradeability and networking.

The GMKtec NucBox M6 Ultra Mini PC AMD Ryzen 5 7640HS leads on efficiency and noise and ports and expansion.

They score the same on build and support.

GMKtec NucBox M5 Ultra AMD Ryzen™ 7 7730U Mini PC

GMKtec NucBox M5 Ultra AMD Ryzen™ 7 7730U Mini PC

7.0/10verdict: wait for deal

The NucBox M5 Ultra suits homelabbers who want an 8-core Ryzen 7 in a small box with two 2.5GbE ports. It also suits buyers who plan to add RAM and storage over time. It is a weaker fit for anyone who needs quiet running, fast external ports or high-settings gaming.

Typically about £289.99 in the UK when we researched itCheck price at Amazon UK (opens in a new tab, affiliate link)

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

GMKtec NucBox M6 Ultra Mini PC AMD Ryzen 5 7640HS

GMKtec NucBox M6 Ultra Mini PC AMD Ryzen 5 7640HS

6.4/10verdict: wait for deal

The M6 Ultra is for buyers who want a compact Ryzen 5 mini PC with room to grow on memory and storage. Dual 2.5GbE and two M.2 slots make it a fit for homelab duties and Linux or Windows desktop use. It suits people who value expandability over the lowest idle power draw.

Typically about £549.96 in the UK when we researched itCheck price at Amazon UK (opens in a new tab, affiliate link)

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

Scores, criterion by criterion

CriterionWeightGMKtec NucBox M5 Ultra AMD Ryzen™ 7 7730U Mini PCGMKtec NucBox M6 Ultra Mini PC AMD Ryzen 5 7640HS
CPU performance25%8/106/10
Upgradeability20%9/108/10
Networking20%8/107/10
Efficiency and noise15%4/105/10
Ports and expansion10%5/106/10
Build and support10%5/105/10
Overall7.0/106.4/10

Specifications

SpecGMKtec NucBox M5 Ultra AMD Ryzen™ 7 7730U Mini PCGMKtec NucBox M6 Ultra Mini PC AMD Ryzen 5 7640HS
CPUAMD Ryzen 7 7730U, 8 cores / 16 threads, base 2.0GHz, boost up to 4.5GHz, 4MB L2 / 16MB L3 cacheAMD Ryzen 5 7640HS: 6 cores, 12 threads, up to 5.0GHz, Radeon 760M integrated graphics
Memory2 x SO-DIMM slots, DDR4 3200 MT/s, dual-channel, 16GB or 32GB pre-installed depending on configuration2x SO-DIMM DDR5 slots, DDR5-4800, 16GB or 32GB configurations
StoragePCIe 3.0 M.2 2280 SSD, 512GB pre-installed in the 16GB configuration; 1TB in the 32GB configurationPCIe 3.0 M.2 2280 SSD, 512GB or 1TB options
NetworkingDual 2.5G Ethernet (2 x RJ45, Realtek RTL8125); Wi-Fi 6E (RZ616, up to 2.4Gbps); Bluetooth 5.2Wi-Fi 6E, Bluetooth 5.2, dual 2.5GbE Ethernet
Maximum memory64GB (2 x 32GB)128GB
Storage slots2 x M.2 slots; slot 1 supports SATA and PCIe, slot 2 supports PCIe only; max 8TB per slot, 16TB total2x M.2 2280, up to 8TB each
Ports2 x USB 3.2 Gen 2 (front), 2 x USB 2.0 (rear), 1 x USB-C USB 3.2 Gen 2 with DP/PD (front), 1 x HDMI 2.0 (4K@60Hz), 1 x DisplayPort (up to 8K@60Hz), 3.5mm audio jack, DC power input, 2 x 2.5G Ethernet3x USB-A 3.2 Gen2 (10Gbps), 1x USB 2.0, 1x USB4 full-function, 1x HDMI 2.0 (4K@60Hz), 1x DisplayPort, 3.5mm audio jack
Power drawManufacturer TDP modes: Silent 10W, Balanced 15W, Performance 35W (peak 35W); DC 19V / 3.42A adapter19V/6.32A 120W external DC adapter; CPU TDP 35W-50W

Strengths and weaknesses

GMKtec NucBox M5 Ultra AMD Ryzen™ 7 7730U Mini PC

  • + Dual 2.5GbE suits Proxmox and NAS use
  • + Two SO-DIMM slots, 64GB maximum
  • + Two M.2 slots, 16TB total
  • − Owners report fan noise in Performance mode
  • − 85–90°C reported under sustained load
  • − No USB4, Thunderbolt or OCuLink

Skip it if:

  • Buyers who need a quiet machine running at full load
  • Anyone wanting USB4, Thunderbolt or OCuLink for fast external devices
  • Gamers who want high-settings AAA titles
Read the full GMKtec NucBox M5 Ultra AMD Ryzen™ 7 7730U Mini PC review ›

GMKtec NucBox M6 Ultra Mini PC AMD Ryzen 5 7640HS

  • + Two SO-DIMM slots, 128GB maximum, two M.2 slots
  • + Dual 2.5GbE plus Wi-Fi 6E
  • + Owners report quiet running in normal use
  • − Idle draw about 10W, toward the upper end
  • − Fan clearly audible when gaming or rendering
  • − No warranty or BIOS update details in the research

Skip it if:

  • Buyers who need the lowest possible idle power for an always-on box
  • Anyone wanting a silent machine under sustained gaming or rendering loads
  • Buyers who need 10GbE, SFP+ or OCuLink
Read the full GMKtec NucBox M6 Ultra Mini PC AMD Ryzen 5 7640HS review ›

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