It says Overclock on the box because the card you have is running at higher frequencies than the original 9500GT. 'Overclock' on the box does not reflect in any way the overclockability of your card. If you don't even know that much about computers then i would suggest against overclocking.
If you really want to then you should use rivatuner: http://downloads.guru3d.com/downloadget....3976bff55a You should only increase by 10Mhz at a time and test in a 3D intensive game (GTA SA is not 3D intensive enough) after wards to make sure it doesn't overheat and no artifacts are seen. If your card overheats or you see artifacts, you know you've reached the limit of the card so put the frequencies down about 15-20Mhz and keep it there.
If you really want to then you should use rivatuner: http://downloads.guru3d.com/downloadget....3976bff55a You should only increase by 10Mhz at a time and test in a 3D intensive game (GTA SA is not 3D intensive enough) after wards to make sure it doesn't overheat and no artifacts are seen. If your card overheats or you see artifacts, you know you've reached the limit of the card so put the frequencies down about 15-20Mhz and keep it there.

