hello, i'm a mac newb but have been convinced to make the transition from pc to mac . I will hopefully make the transition soon but am really excited to play CS Source with these incredible frame rates people are claiming to achieve on a mac!. I was thinking of going for the 17'" model, as i hear this is enough to run steam MOST IMPORTANTLEY CS SOURCE properly and smoothly. HOWEVER, i would like to achieve the best frame rate possible for the money. I WAS THINKING, if this would be appropriate to obtain 100 FPS and the incredible fps people are getting. 17'" MODEL STOCK maybe with RAM upgrade? 1.83 ghz processor. ATI x6000 or something like that? im pretty sure this card can handle it and its Video memory is good enough to run source. RATHER than the upgrade 256 version which i find unessacary becuase i tend to stick with one online game. QUESTION - RAM 512 FINE OR 1GB? thanks for the response in advance.