General Performance

AIDA64 Cache and Memory

First up in our performance analysis is AIDA64's memory benchmark. This test gives a clear picture of how quickly the CPU and memory subsystem can move data. Since the Radeon iGPU relies on system RAM, bandwidth and latency play a direct role in both everyday performance and graphics performance.


Here, the GMKtec M6 Ultra posts 61,286 MB/s for read, 75,549 MB/s for write, and 63,045 MB/s for copy, with measured latency coming in at 103.8 ns. Those figures are right in line with what a dual-channel DDR5-4800 configuration typically delivers on a Ryzen 7000-series mobile platform. Read and copy throughput land where expected as well, while write performance trails faster DDR5-5600 setups but still holds up well for day-to-day multitasking and heavier mixed workloads. Cache results across L1, L2, and L3 are very strong too, which helps offset some of the memory latency in real-world use and keeps the system feeling quick when jumping between tasks.

Cinebench

Cinebench measures how well the CPU handles both single-threaded and multithreaded rendering. It is a simple way to compare real compute performance across systems.


The GMKtec M6 Ultra scores 146 in multicore and 51 in single-core. This demonstrates the limits of the Ryzen 5 7640HS when constrained by the compact chassis of a Mini-PC, but multicore performance still holds up well for everyday productivity, light content creation, and sustained workloads that rely on multiple threads.

7-Zip

7-Zip's internal benchmark stresses compression and decompression, which shows how the CPU handles file-heavy tasks like installs, archiving, and packaging.


Here, the M6 Ultra posts 73,486 MIPS in compression and 85,904 MIPS in decompression, resulting in a 79,695 total rating. Decompression performance is especially solid and keeps pace with several older Intel H-class systems. For real-world use, tasks like unpacking large archives or game installations feel quick and consistent.

PCMark 10

PCMark measures day-to-day responsiveness across web, conferencing, documents, multitasking, and light content creation.


The M6 Ultra scores 10,234 in Essentials, 9,130 in Productivity, 8,042 in Digital Content Creation, and an overall score of 6,518. Essentials performance is strong, which lines up with how fast the system feels during web use and general desktop work. Productivity results are also decent for office tasks and multitasking.

Y-Cruncher

Y-Cruncher stresses the CPU with an extremely heavy math workload, making it a good stress test for stability and raw compute.


The M6 Ultra completes the 2.5B Pi calculation in 108.350 seconds, with a wall time of 111.284 seconds. That places it behind higher-end Ryzen AI and Core Ultra systems, but still well ahead of older U-series and budget CPUs. For a compact Ryzen 5 system, this is solid sustained performance.

Geekbench

Geekbench covers a wide range of real workloads and gives a balanced look at CPU strength.


On the GMKtec M6 Ultra, Geekbench comes in at 2,191 single-core and 9,871 multicore. For GPU compute, it hits 24,597 in OpenCL. The CPU score tells us that it should perform well in everyday use, while the OpenCL result gives the iGPU enough room for lighter creative work and acceleration-friendly apps, as long as expectations stay in iGPU territory.