Hello everyone! 
I am about to build a new pc, and was wondering if any of you could help.
I have a budget of max 600ish dollars, less if possible.
I want to use it for games like CSGO, League of legends, GTA and FIFA.
I would like for it to be able to run dual monitors smoothly if possible.
I have a graphics card in my current pc (Sapphire AMD Radeon HD 7790 OC), was hoping to be able to use this mabye, but if not a new graphics card is fine.
Thanks in advance, and happy new year!

I am about to build a new pc, and was wondering if any of you could help.
I have a budget of max 600ish dollars, less if possible.
I want to use it for games like CSGO, League of legends, GTA and FIFA.
I would like for it to be able to run dual monitors smoothly if possible.
I have a graphics card in my current pc (Sapphire AMD Radeon HD 7790 OC), was hoping to be able to use this mabye, but if not a new graphics card is fine.
Thanks in advance, and happy new year!