Read more at HEXUSNvidia is due to release the GeForce GTX 770 at the end of the month. However, some sources say that if you have a GeForce GTX 680 you can make your own GTX 770 with a quick BIOS flash. This would mean that the upcoming GeForce GTX 770 is little more than a rebranding exercise. This kind of graphic-card rebranding behaviour is not without precedent, is this DIY GTX770 going to be exactly the same as one of the models released near the end of May?