Hello! I need a new graphics card for my HP Pavilion 500-267c. I am told that I can support 1 PCI Express x16 (Gen 3.0) and a power supply requirement of less than 300Watts. I'm trying to play more demanding games. Some examples are Dayz Standalone, Rust, Garry's Mod, and Crusader Stronghold 2 (Not released yet). Most of these games can be found on Steam. Any suggestions? Thanks.