Hi there! I am also interested in finding out more, I have a clevo p150EM with the 680, but I am a noob in flashing vbios (never tried) and I like optimus; but still I also like to know I'll be able to play good games at full specs some time in the near future which has brought me here, to find out how I can get the hell out of my gpu without spending to upgrade to next gen gpus; up to now I've learnt the tape foil mod which I will definitely try, but I would love to get as close as possible to desktop 670 thanks to a good but safe and stable overclock! And also apart from optimus being preserved, if I encounter any problem, can I come back to original vbios flawlessy? Please advise, thanks so much!!