How can i overclock when precision X doesnt allow more than 6% more power? and the video driver crash when i even do a 50MHZ clock?
Either edit your own using GPUZ and NiBiToR (if you choose to pursue this then I can explain more in depth) or just search up a pre-made BIOS online that has already unlocked the voltage. Then you'll need nvflash to flash your new BIOS onto your card, as well as a tool like the HPUSBBoot tool that lets you boot from a USB drive. You can install Windows 98 DOS to the drive so that you can flash it. It is way less complicated than it seems.