Originally Posted by Kanoti1
Some people here have my Card , and Overclocked it to 1350 and 1400Mhz. But they sold thier Cards I Guess or don't want to help me.
I went digging through the past in this thread and found something for you. Short of it is like I said, djthrottleboi himself (one of the geniuses on nvidia bios's here on OCN) a few years ago confirmed it (for someone else posting with a Gigabyte 770 2GB windforce OC card) that the bios for these cards -CAN NOT- be set to anything above 1.212v, see here: https://www.overclock.net/t/1396319/official-gtx-770-owners-club/7930#post_23210251
However a little further in the thread, djthrottleboi posted a modified bios for the user (user with a Gigabyte 770 2GB windforce OC card) that increased power limits as much as possible and some other mods. A link to the post with that bios is here: https://www.overclock.net/t/1396319/official-gtx-770-owners-club/7950#post_23215808
I would probably suggest trying to download this and flash it to your card, and then try to overclock further.
Information on how to flash nvidia cards can be found here with pictures and a walkthrough: https://www.overclock.net/t/1523391/easy-nvflash-guide-with-pictures-for-gtx-970-980
I know it's for nvidia 900 series but the process is the same for 700 series, just get latest nvflash and follow.
DISCLAIMER: I take no responsibility to any possible or potential damages that may occur to your card during flashing. You -MUST- be prepared that the flash may possibly not work and you may need either another computer, or another video card, or using onboard video on your computer in order to re-flash original bios. As always, flashing any other bios to your video card other than what it came with runs the risk of potentially causing irreparable damage to it. This risk is yours and you must understand this when you attempt it. No one is responsible for bricking your card except you if you try it and something goes wrong. Remember to use: "nvflash --save file.rom" and backup your current bios on your card -FIRST-.
This bios from djthrottleboi is going to be your best bet at overclocking this card. What ever overclocks you get after this would be the best you're ever going to get.