Please suggest a good PC configuration

Hi guyz!

I have an Intel i5 processor with WD 2TB Hard Disk.
Also, there is 4GB of RAM from Transcend.

Please suggest a graphics card for good gaming performance. Also, please suggest a motherboard which would go with this configuration, which has USB 3.0 ports.

I would also like to get a CPU cabin which looks cool and stylish(for gaming) with LED lit cooling fans. Please let me know which would suit me better.

Should I add something more to these for better performance?
 
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