Currently i own a hp D2537F3P psu which is 250watts. I looked online to see how much watts i need for my pc which is 215 but for my gpu it says i need a minimum of 350 watts. My gpu is a Nvidia geforce gt 630. I dont know if to put the gpu in or not to put in in just incase it would destroy some of my parts but it says that the pc with the gpu only needs 215 watts. Is this right?????