If possible, could someone who has the CUDA drivers installed post screenshots of the CUDA-Z window showing the "Core" and "Memory" sections for iMacs with either the GTX 675MX or 680MX fitted, please? I'm interested in comparing the specs with the GTX 670 I have in my Mac Pro. The card performs admirably in all applications except Civ 5 and Aspyr support are particularly arrogant about my problem, waving the "unsupported" card like crazy. I understand one of these cards is really a downclocked GTX 670 desktop chipset and I'd like to try editing my BIOS ROM to emulate it precisely. Ta!