May 4, 2017 - Or perhaps GPU-Z doesn't understand Apple's proprietary EFI. Click to expand. From memory, GPU-Z can tell that my 7950 Mac Edition card has EFI. I suspect it only check a particular byte in the ROM, if 00 means EFI, and 80 means legacy. But not really read through the entire ROM to determine if the.Missing. Download GPU-Z 1.18.0. Monitors your graphic card's key features. CPU-Z is one of the most famous and trustworthy programs for monitoring the internal features of your PC. In spite of having different authors, GPU-Z shares the interface and main features of CPU-Z, only it focuses exclusively on your. GPU Caps Viewer is a graphics video card utility that quickly provides the essential information regarding the GPU. GPU Caps Viewer logo, GPU Caps Viewer OpenGL, OpenCL, CUDA APIs and graphics card / GPU information utility.