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GMKtec M6 Ultra specifications and in-depth review

GMKtec M6 Ultra

Manufacturer: GMKtec

The GMKtec M6 Ultra is a compact mini PC designed for users seeking efficient computing performance. It features a 1000GB NVMe SSD for fast storage and comes with 32GB of RAM, making it suitable for multitasking and demanding applications.

Equipped with a Radeon 760M GPU, the GMKtec M6 Ultra supports up to four displays. Its CPU runs at a base speed of 4.3 GHz across six cores, with a turbo boost of 5 GHz. Additionally, it offers Wi-Fi 6E support and multiple USB and HDMI ports for versatile connectivity.

Pros
  • The device supports up to 256GB of RAM, allowing for future memory upgrades.
  • Equipped with Wi-Fi 6E, it offers fast and reliable wireless connectivity.
  • Includes both Thunderbolt 4 and USB 4 40Gbps ports, providing versatile and high-speed data transfer options.
  • Supports multiple display outputs, including HDMI 2.0 and DisplayPort 1.4, making it suitable for multi-monitor setups.
  • The processor supports modern instruction sets like AVX and AES, enhancing performance for various workloads.
Cons
  • The system does not support ECC memory, limiting error correction for critical tasks.
  • No support for big.LITTLE technology, which may affect power efficiency in certain workloads.
  • The GPU is limited to 8 execution units, which may not be ideal for demanding graphics tasks.
  • The warranty period is only one year, which is relatively short for long-term reliability.
Who is this for?

The GMKtec M6 Ultra is well-suited for users who need a compact, versatile mini PC with strong performance in everyday tasks and multitasking. With its support for up to 256GB of RAM and a maximum RAM speed of 7500 MHz, it is ideal for those who require a system with substantial memory capacity and high-speed performance. The inclusion of Wi-Fi 6E and multiple high-speed ports like Thunderbolt 4 and USB 4 40Gbps ensures fast connectivity for data transfer and peripherals, making it a good choice for professionals working with high-bandwidth applications or those needing fast access to external storage and devices. Its support for modern instruction sets like AVX and AES also makes it suitable for workloads that benefit from advanced encryption and parallel processing tasks.

Who is this NOT for?

The GMKtec M6 Ultra may not be suitable for users with demanding gaming or graphics-intensive workloads, as it is equipped with a Radeon 760M GPU that offers limited execution units (8 EUs), which could result in less-than-ideal performance for advanced gaming or high-end visual rendering. Additionally, the absence of big.LITTLE technology limits its power efficiency, which could be a disadvantage for users who prioritize battery life or energy-saving features. It also lacks support for ECC memory, making it less appropriate for environments where data integrity is critical, such as in scientific computing or server use.

General info:

SSD storage capacity 1000GB
release date August 2025
Is an NVMe SSD ✓
thickness 127 mm
height 47.8 mm
width 128.8 mm
volume 781.89328 cm³

The GMKtec M6 Ultra features a 1000GB SSD with NVMe technology, ensuring fast data access and storage speeds. Its compact design includes a thickness of 127 mm, a height of 47.8 mm, and a width of 128.8 mm, making it a space-efficient solution for various setups. The device has a total volume of 781.89 cm³, optimizing both performance and form factor.

CPU:

Thermal Design Power (TDP) 35W
CPU speed 6 x 4.3 GHz
turbo clock speed 5GHz
CPU threads 12 threads
Has integrated graphics ✓
uses multithreading ✓
L3 cache 16 MB
L2 cache 6 MB
L1 cache 384 KB
L2 core 1 MB/core
L3 core 2.67 MB/core
clock multiplier 43
Has an unlocked multiplier ✕
Supports 64-bit ✓
CPU temperature 100 °C

The GMKtec M6 Ultra is powered by a six-core CPU with a base clock speed of 4.3 GHz and a turbo boost of up to 5 GHz. It features 12 threads for enhanced multitasking and performance. The processor includes integrated graphics, a 16 MB L3 cache, and supports 64-bit architecture, ensuring robust computing for various applications. The CPU has a thermal design power (TDP) of 35W and can handle temperatures up to 100°C.

Graphics card:

GPU clock speed 800 MHz
GPU turbo 2600 MHz
PCI Express (PCIe) version 4
texture mapping units (TMUs) 32
shading units 512
render output units (ROPs) 16
DirectX version DirectX 12
OpenGL version 4.6
OpenCL version 2.1
semiconductor size 4 nm
supported displays 4

The GMKtec M6 Ultra features a dedicated GPU with a clock speed of 800 MHz and a turbo boost of 2600 MHz, delivering enhanced graphics performance. It supports up to four displays and is equipped with 512 shading units and 32 texture mapping units (TMUs), making it well-suited for demanding visual tasks. The GPU is built on a 4 nm semiconductor and supports DirectX 12, OpenGL 4.6, and OpenCL 2.1 for modern graphics standards.

Memory:

RAM 32GB
RAM speed 4800 MHz
DDR memory version 5

The GMKtec M6 Ultra is equipped with 32GB of RAM, providing ample memory for multitasking and demanding applications. The memory operates at a speed of 4800 MHz and uses DDR5 technology, ensuring fast data transfer and efficient performance.

Connectivity:

Wi-Fi version Wi-Fi 6E (802.11ax), Wi-Fi 6 (802.11ax), Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)
supports Wi-Fi ✓
Has Bluetooth ✓
Bluetooth version 5.2
USB 2.0 ports 1
USB 3.2 Gen 2 ports (USB-A) 3
USB 3.2 Gen 1 ports (USB-A) 0
USB 3.2 Gen 2 ports (USB-C) 0
USB 4 40Gbps ports 1
USB 4 20Gbps ports 0
USB 3.2 Gen 2x2 ports 0
USB 3.2 Gen 1 ports (USB-C) 0
Thunderbolt 4 ports 1
Thunderbolt 3 ports 0
DisplayPort version DisplayPort 1.4
DisplayPort outputs 1
HDMI version HDMI 2.0
HDMI ports 1
RJ45 ports 2
has a socket for a 3.5 mm audio jack ✓
has a VGA connector ✕
Has S/PDIF Out port ✕

The GMKtec M6 Ultra offers a wide range of connectivity options, including Wi-Fi 6E support, ensuring fast and reliable wireless internet access. It also features Bluetooth 5.2 for seamless device pairing. For wired connections, the mini PC provides USB 3.2 Gen 2 ports, Thunderbolt 4, HDMI 2.0, and two RJ45 Ethernet ports, along with a DisplayPort 1.4 output for multi-display setups.

Benchmarks:

PassMark result 22965
PassMark result (single) 3652
Geekbench 6 result (multi) 9208
Geekbench 6 result (single) 2293
PassMark result (overclocked) 24911

The GMKtec M6 Ultra delivers solid performance across multiple benchmarks, with a PassMark result of 22,965 and a single-core score of 3,652. In multi-core performance, it achieved a Geekbench 6 score of 9,208, while the single-core score was 2,293. Overclocking boosted the PassMark result to 24,911, showcasing its capability for enhanced processing tasks.

Miscellaneous:

maximum memory amount 256GB
GPU name Radeon 760M
Type Laptop
Uses big.LITTLE technology ✕
instruction sets MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, SSE 4.2
Has NX bit ✓
GPU execution units 8
Supports ECC memory ✕
memory channels 2
RAM speed (max) 7500 MHz
warranty period 1 years

The GMKtec M6 Ultra supports a maximum memory size of 256GB and is equipped with a Radeon 760M GPU featuring 8 execution units (EUs). It uses a two-channel memory configuration and supports RAM speeds up to 7500 MHz. The CPU is a laptop-type processor, and the system includes support for various instruction sets, including MMX, AVX, and AES. It also features an NX bit for enhanced security. The warranty period is one year.

Final Verdict

The GMKtec M6 Ultra is a compact and versatile mini PC designed for users who need a reliable and high-performing system for everyday tasks and light professional workloads. With its impressive memory capacity of up to 256GB and fast connectivity options such as Wi-Fi 6E and Thunderbolt 4, it excels in handling multitasking and high-speed data transfers. However, it may not be the best choice for users with demanding gaming or high-end graphics needs, as its Radeon 760M GPU offers limited performance. Overall, the GMKtec M6 Ultra is a solid choice for professionals seeking a compact, efficient solution for general productivity tasks and connectivity-heavy environments.