The miscellaneous specifications for the Asus ROG Zephyrus G16 (2025) GU605 16″ and the Asus ROG Zephyrus G16 (2025) GU605 16″ (Ultra 9 285H / RTX 5080 Laptop / 64GB RAM / 2TB) are mostly identical, with a few notable differences. Both models have a clock multiplier of 29, support Intel Resizable BAR, and feature the Blackwell GPU architecture. They also both have integrated graphics, 24 MB of L3 cache, and use big.LITTLE technology. The memory bus width, effective memory speed (25400 MHz), maximum memory bandwidth (811.5 GB/s), GPU memory speed (2000 MHz), and the number of transistors (17800 million) are the same in both models. Both also support 3D, multi-display technology, ECC memory, and OpenCL version 3, as well as OpenGL version 4.6.
The primary difference between the two models lies in the GPU specifications. The first model (GU605 16″) has 128 render output units (ROPs), 328 texture mapping units (TMUs), and 10496 shading units. In comparison, the second model (Ultra 9 285H / RTX 5080) has 96 ROPs, 256 TMUs, and 7680 shading units. Additionally, the first model has a Thermal Design Power (TDP) of 95W, while the second model has a TDP of 80W. The PassMark result (overclocked) is the same for both models at 34411, but the GPU architecture and other graphical specifications show some distinctions.
Both models share many of the same base specifications, but the differences in GPU and TDP may have an impact on thermal management and performance in certain scenarios. However, the overall system architecture, including the CPU, RAM, and integrated graphics, is the same in both models.