We know that the next generation graphics card from NVIDIA, i.e. GTX 700 series will still be based on the Kepler architecture. Additionally, we also know that even though the top end GTX 780 will be based on a GK110 series GPU, GTX 770 and 760Ti will still be using a GK104 series GPU. The GTX 770 is using a GK104 -425 chip as compared to GTX 680 which is a GK104-400 chip. In contrast, other than an improved manufacturing process for the GPU, the internal architecture of both graphics card is still identical.
Recently, someone has successfully managed to flash the BIOS of a GTX 770 to a GTX 680 smoothly and has shared the GPU-Z screenshot.
As GTX 770 is clocked at a faster speed as compared to GTX 680, there will be a certain performance increase after the flashing of BIOS on the card. For those who wants to have a feel of the speed on a next generation GTX 770 can probably do the same and get the BIOS of GTX 770 to flash to their current GTX 680. However, after flashing of the BIOS, in order for the drivers to work properly, the “new” graphics card must be used with ForceWare 320.00 which supports the GTX700 series.