The GMKtec NucBox G3 Pro follows a Micro-ATX form factor and measures 106 mm wide by 114 mm thick, giving it a notably compact physical profile. Storage is handled by a 512GB NVMe SSD, offering faster read and write performance compared to traditional SATA-based drives.
The processor runs at a base speed of 2 x 2.1 GHz with a turbo clock speed of 4.1 GHz via Turbo Boost version 2, and handles 4 threads through multithreading support. It operates within a 15W TDP envelope and has a maximum rated temperature of 100°C, with a bus transfer rate of 4 GT/s. Cache memory is distributed across three levels — 128 KB of L1, 0.5 MB of L2 (0.25 MB per core), and 4 MB of L3 cache (2 MB per core) — and the CPU fully supports 64-bit processing along with integrated graphics.
The integrated graphics solution has a base clock speed of 300 MHz and a turbo clock of 1000 MHz, built on a 14 nm semiconductor process and connected via PCIe version 3. It supports up to three displays simultaneously and delivers a maximum memory bandwidth of 41.66 GB/s. On the software side, it is compatible with DirectX 12 and OpenGL 4.5, covering the requirements of a broad range of modern applications and light graphical workloads.
The GMKtec NucBox G3 Pro comes equipped with 16GB of DDR4 RAM running at a speed of 3200 MHz, providing a solid memory foundation for handling everyday multitasking and general computing workloads.
Wireless connectivity covers Wi-Fi 6 (802.11ax) along with backward-compatible Wi-Fi 5 and Wi-Fi 4 standards, complemented by Bluetooth 5.2 for peripheral pairing. On the wired side, there are four USB 3.2 Gen 1 Type-A ports and one RJ45 Ethernet port, while USB 2.0, USB-C variants, Thunderbolt, and DisplayPort outputs are absent. Video output is handled by two HDMI 1.4 ports, and audio connectivity includes a 3.5 mm headset jack; however, there is no VGA connector and no S/PDIF output.
In benchmark testing, the processor scores 3894 in PassMark multi-core and 2193 in the single-core PassMark test, rising to 4116 under overclocked conditions. Geekbench 6 results come in at 2086 for multi-core and 1155 for single-core performance. The Blender bmw27 render test completed in 1630.69 seconds, reflecting the practical rendering throughput of this CPU configuration.
The system uses a laptop-class CPU paired with Intel UHD Graphics 620, and supports a maximum of 64GB of RAM across two memory channels, with a maximum rated RAM speed of 2666 MHz. ECC memory is not supported, and there is no external memory slot available. The CPU does not use big.LITTLE technology but does include an NX bit for hardware-level security. Supported instruction sets include SSE 4.1, SSE 4.2, AVX, AES, FMA3, F16C, and MMX, and the product carries a one-year warranty.
