I have a Dell Vostro 270s and it's a very slim and small tower, i'm looking to upgrade my computer and figured I definitely need a graphics card. I'm new to computer building so I want to make sure things work first. I plan on buying http://www.amazon.com/gp/product/B00TB8XQUI/ref=ox_sc_sfl_title_6?ie=UTF8&psc=1&smid=ATVPDKIKX0DER and was wondering if this would be compatible with my tower.