Hi. I'm a light gamer and have enjoyed the AMD A10 7870K over the last year. What would be an inexpensive (well under $100) graphics upgrade? I like the idea of, "Dual graphics", but it seems available R7 250 cards have been changed to not support this anymore (something about a 250X chip). I have an HD 6950 but not thrilled with its power consumption. My PS is around 450 - 500 watts I think. Thanks.