Geforce gt610 2gb has a fan requires no power supply its what i use works great and is small pcie 2.0 also 610 is 70$ and better than the 510 that i had before. http://www.bestbuy.com/site/EVGA+-+GeForce+GT+610+2GB+DDR3+PCI+Express+2.0+Graphics+Card/5608231.p?id=1218672938148&skuId=5608231 its ddr3 and will work onces you hope to gddr5 price can double or tripple. but this is a damn good card.