I want to upgrade from my AMD RADEON HD6770 graphics card without upgrading my 450 watt PSU. I do not play shoot ups or that type of genre games. Currently I prefer City Skylines. Can someone suggest an AMD card that will be an improvement on my current card and that will work with my original PSU. I have a ASUS P8Z68 V motherboard, not sure if this matters.
Thanks in anticipation.