What's the best or at least a very good graphics card I can use for my HP Pavilion Desktop model H8-1010? The current one is an AMD radeon HD 6450. It must be a card that does not require Uefi bio but can be played on legacy only bios So i believe that rules out any new GTX 9xx series. My budget is about $140 max, and as far as power supply, i will have a 500-700W supply.