I just got word from Scott at Bjorn3D that Leadtek has introduced a new BIOS for their GeFoce 7800 GTX. Interestingly, it bumps up the core clock speed to 450MHz and RAM to 1.25GHz. That's identical to the clocks provided by XFX's model. Clearly Leadtek are confident that all of their stock can deal with the increased clock speeds (though it is a fairly small change.) New boards will be shipping with this BIOS and the warranty is, as you'd expect, unaffected.

Head over to the Leadtek website to grab the new BIOS.