I just received my Radeon HD 7850 1GB from newegg that my friend suggested and i come to find out that it needs a 6 prong power supply and a Minimum of a 500 Watt power supply. I have a ATX-TL450W power supply so i need suggestions on what kind of power supply to get and how to install it. While im at it i was wondering if i should upgrade my ram and if it will make my computer noticeably faster i have two slots that are full.
Link to graphics card-http://www.newegg.com/Product/Product.aspx?Item=N82E16814150656
Picture of my mother board