So i know my fair bit about computers, but i just don't understand all this resoulution business. I have a 19" monitor which im fine with. and since i spent a lot of money on my other parts i would rather just keep the same one. I also like playing 1440x900 it suits me just fine. but will an amd radeon 7870 be an overkill ? i like playing games on high settings and my maximum budget is around 220$ which is the price of a 7870. so will it help me achieve high framerates just like it would on a normal monitor ? please help me 
