RITIK :
sorry. my mistake.now the link is correct.does this card need a 6-pin connector(something like that)?
No GTX 650 does not have a 6-pin power connector. You have to just plug it into the PCI-e port. If your PSU is branded from a reputed brand you will be able to run it depending on what is your configuration (250W is quite less.)
If it does not work you can get a Generic Cheap PSU for less than Rs.1000 which is rated for 300-400W you can surely run this GPU on that PSU.