Good Graphics Card

And my Ram is pretty low,I am on a tight budget and play basic games such as counter strike, Mario however i want to beef up my Rig.

Should I choose more Ram over dedicated Graphics. I am willing to buy used graphics card.
 
ZOTAC NVIDIA GeForce GT 610 Synergy Edition 2 GB DDR3 Graphics Card is around 2850/-

I hAVE upgraded my ram to 6 gb now!

GPU BUDGET - 3500/- and buy the way does anyone have a software to check compatible graphics card!

 


what is your motherboard model number?