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GMKtec

GMKtec M6 Ultra Gaming Mini PC Ryzen 7640HS

  • AMD Ryzen 5 7640HS, 6 cores, 12 threads, up to 5.0 GHz
  • 16GB DDR5 SO-DIMM (2x8GB), expandable to 128GB
  • 512GB M.2 2280 PCIe 3.0 SSD, dual slots up to 8TB each
  • Radeon 760M graphics, AV1, HEVC, AVC hardware encode and decode
  • Dual 2.5G LAN
  • Three displays: USB4 up to 8K@60Hz, HDMI 2.0 and DP at 4K@60Hz
  • Wi-Fi 6E, Bluetooth 5.2
  • VESA mount included, 1 year warranty

Updated 25 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A small, expandable desktop for office work, media and light gaming with dual network ports, though the title references a different chip than the one listed.

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ASIN: B0FLDC98GCModel: M6 UltraCategory: Mini Desktop Computers

Sizes Available

16GB+512GB I 7640HS16GB+1TB I 6650H16GB+512GB I 7730U32GB+2TB I 8945HS32GB+1TB I 7735HS32GB+1TB I 6850U

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Overview

GMKtec builds the NucBox Ultra around an AMD Ryzen chip with Radeon integrated graphics in a box small enough to bolt behind a monitor. Two memory slots, two SSD slots and two network ports leave room to grow it into a home server or office PC.

Room for lots of memory and storage plus dual network ports let it serve as a desktop, a media box or a router appliance. Integrated graphics cap gaming at moderate settings, and the title's mention of a second chip adds confusion.

Who it's for

Desk workers with up to three screens, and tinkerers building a firewall or small server, will get the most out of its ports and slots. Players expecting dedicated graphics performance should look at a full size gaming PC.

Pros and cons

Pros
  • Memory expandable to a large size
  • Two M.2 slots for storage
  • Dual 2.5G network ports
  • Drives three displays
Cons
  • Integrated graphics only
  • Title mentions a different processor
  • Operating system not clearly listed

Performance notes

Processing speed comes from the six core chip, while the Radeon graphics borrow system memory, so filling both memory channels helps games and video. Two cooling fans govern how long it holds boost clocks, and hardware video decoding lightens the processor load during media playback.

Specifications

BrandGMKtec
ModelM6 Ultra
Dimensions & fit
Ram Memory Maximum Size128GB
Item dimensions5 x 2 x 5 inches
Capacity & performance
Memory Storage Capacity512GB M.2 2280 PCIe 3.0 SSD
CPU Model Speed Maximum5.0 GHz
Video OutputUSB4 (8K@60Hz), HDMI 2.0 (4K@60Hz), DisplayPort (4K@60Hz)
Cooling MethodDual cooling fans
Compatibility & installation
RAM Memory Installed16GB DDR5 SO-DIMM (2x8GB)
WirelessWi-Fi 6E, Bluetooth 5.2
Warranty & support
Warranty Description1 Year Manufacturer
Other details
Graphics CoprocessorAMD Radeon 760M
Hard Disk DescriptionDual M.2 2280 slots, PCIe 4.0, up to 8TB per slot
Processor Count6 cores, 12 threads
Ports3 x USB 3.2 Gen2, 1 x USB 2.0, 1 x USB4, 1 x HDMI 2.0, 1 x DP, 1 x 3.5mm audio, 1 x DC
Lan2 x 2.5G RJ45
CPU Model NumberAMD Ryzen 5 7640HS
BuiltIn MediaMini PC, HDMI cable, power supply and cable, user manual, VESA mount and screws

Frequently asked questions

How do I keep the GMKtec M6 Ultra running cool?

It uses dual cooling fans; leave space around the vents, especially when mounted behind a monitor with the included VESA bracket.

Which processor is in the GMKtec M6 Ultra?

The bullets and specs list the AMD Ryzen 5 7640HS. The title also mentions the 6800H, which belongs to a different version.

Can I add more storage to the M6 Ultra?

Yes. It has dual M.2 2280 slots supporting PCIe 4.0 SSDs up to 8TB each. Upgrades are not included.

How many monitors can the GMKtec M6 Ultra drive?

Three at once: one via USB4 up to 8K@60Hz, plus HDMI 2.0 and DisplayPort at 4K@60Hz.