14 DAY TRIAL // Flashing BIOSes isn't something that graphics cards makers like to promote, because each upgraded graphics card means one less new adapter bought and, thus, less money for said companies.
That doesn't mean the options don't make themselves known though.
Case in point, the GeForce GTX 770 graphics card that NVIDIA is expected to launch soon might not have to be bought at all.
While the current rumor is that the board is based on a new GK104 GPU called GK104-425, a newer report points out that NVIDIA may very well not change the GPU from the one used in GTX 680 at all.
This, presumably, would allow for any GeForce GTX 680 to become GTX 770 with just a BIOS flash.
Found here, and provided by a Reddit user, the BIOS change will pull the GPU speeds from 1,006 MHz Base / 1,058 MHz GPU Boost to 1059 MHz core, 1125 MHz maximum GPU Boost.
Meanwhile, the memory will jump from 6 GHz to 7 GHz, implying a bandwidth of 224 GB/s.