I bought this budget cyber-power prebuilt PC with AMD A10 7850K CPU,AMD A58 chipset,8Gb Kingston DDR3 1600Mhz RAM and AMD Radeon R7 integrated GPU, Lately I've been getting very low frames in games like League of legends and Overwatch and I was wondering if it was possible to add a gtx 750 ti to it and if the 500W psu is enough to run it?