Ok... i tried asking this over at Guru3D (which by the way their forums are kinda biased... since it basically bleeps out MVKTech). hopefully someone here will have some useful input about my question. I now have 2 Zalman VF900's on my 7900GT's.... and i'm kinda thinkin about overclocking them. the problem is...... my video cards i believe are the earlier eVGA versions that are running at the standard voltage of i think it was 1.2v. i downloaded the BIOS for my card (7900GT CO SC), and downloaded the one for Revision 6 (which i'm assuming is the revision number of the card), and looked at the bios with NiBiTor, and it showed 1.45v in 3D mode. my first question is.... does anybody know if there's a surefire way i can figure out exactly what revision number of cards i have? my second question is..... if i upgrade the BIOS of my cards to the one i downloaded..... would it actually run at 1.45v, or would i still have to do some sort of volt mod, be it pencil or actual wire? Supposedly, with 1.2v, i'll only probably be able to gain about 20mhz on the core. 1.45 allows much higher.