I have had my PC for a while but it isn't good at gaming and there are a lot of indie and A A A games coming out that I want to play. I am not sure how powerful the power supply is I can't find It on the Packard Bell website.
Current PC specs
I5 650
4GB RAM
AMD Radeon 5450
Windows 7 64bit
What I am thinking of upgrading is the graphics card to a GTX 750TI and add 8GB RAM. Is it worth upgrading to play games like titanfall, Assetto Corsa, DayZ and dark souls 2? I have a really low resolution monitor and need a new one what resolution would you recommend for the upgraded version of my PC?