Has anyone tried to flash 8800GT 512 efi32 rom on 8800GTS 512 for early Mac Pro? First, thanks to Altimeter88 for posting 8800GT 512 efi32 rom. I will try it on 8800GTS 512 tomorrow. I have EVGA 8800GTS KO 512 (part#512-P3-N845-AR). It has right EEPROM size. I am planning to reclock Bios back to factory overclocked speed of 670 MHz GPU, 1674 MHz Shader, and 1940 MHz (effective memory) using NiBiTor. I've ran this card at 800 MHz GPU, 1920 MHz Shader, and 2000 MHz (effective memory) in PC, but I am a bit afraid to run it that high in Mac Pro. I am not sure how flashing 8800GT rom will work under OS X. I assume it will run at reference 8800GT setting of 600 MHz GPU, 1500 MHz Shader, and 1800 MHz effective memory. Anyone have any idea if 8800GTS will run 128 Stream Processors versus 112 Stream Processors of 8800GT? What if the card was reflashed with 55k 8800GTS PC bios rom, will EFI portion remain (which I doubt)?