I have Dell Vostro 1450, having only 2GB RAM, which is insufficient for me for some task. So I want to upgrade my RAM, I want to buy a 4GB RAM Please suggest me 4GB RAM available Indian stores in cheapest price b/n 1K to 1.5K

I am looking to purchase a Dell E6420 14" i5 2.5 4gb 250gb with Touch Screen for our local police dept. They will use this in the police car for their Computer dispatch software. So it will need to connect to the vehicles dc system. I know alot of 3rd parties pwr supplies cause the bios to go nuts...