Looking to upgrade my sons gaming PC. Currently running a Intel E2220 at 2.4ghz in the LGA775 socket, the GPU is a Zotac 9600gt with 512 GDDR3, also 4gb DDR3. it struggles running most games at any decent settings, looking to upgrade the GPU and possibly the CPU if its worth it. I have a thermal take 420w PSU so i can handle most single GPU's. was wondering what recomendations for cards i should look at to run LoL, WOW, minecraft and a few others in max settings. nothing like BF4 is played on this so i dont need overkill i have a main rig for that. Thanks