Sony Vaio SVS13 / SVS15 series - overclocking BIOS for GT 640m LE users The Nvidia GT640m LE ("Kepler") which can be found in the Sony Vaio SVS13 series has an incredible overclocking potential. Unfortunately this is very limited due to VBIOS restrictions. This modified BIOS version will help you to unlock the full power of your GPU. The increased default clocks (3d) gives you additional performance without havin