Uh...Nice with HDD but what RAM do you have means whats its frequency... ? Low frequency high memory RAM are also of not much use... And your graphics card... You will not get very low fps in games... BTW what games are you going to play... If you are going to play games like Crysis 3, BF3, etc you will not be able to play.. Even though game will start but in low settings you will get FPS lower than 15(as per my experience) ...
I did not got much info about your PC... Download Speccy from
http://www.piriform.com/download .... Then open it and wait until you see all info about your computer and then click on File>Publish Snapshot>Copy the url shown and post it here...
I suggest you to upgrade your Motherboard/Processor/Graphics Card.... If you want a medium gaming experience..Then you will need to upgrade these things... If high-end gaming experience then upgrade motherboard/processor and a high graphics card...
And you also didn't mention your budget...