lol i have a macbook pro im not assuming anything............dude thats like bottlenecking there, a GT 120 is like nothing. Xeon processors coupled with a somewhat low end GPU??? all the components are so great and then the GPU is like like ehh
I remember they used to give the option for a 4870x2 but it was like a ridiculous upgrade price, like almost $1,000
They sell a GTX 285 for mac but its also ridiculously overpriced compared to the PC versions
Im not saying they can't game, they of course can, i do it occasionaly on my macbook pro with my XP partition but theres no point cuz i have a custom built desktop
Im just saying why do they have such nice components and then a somewhat crappy GPU, a single 4870 is not bad at all but when you pay like $4,000 i would expect atleast a 4870x2 or a GTX 295 maybe even two of them quad crossfire or sli. I guess 4xGT 120 would perform pretty decent in games but i doubt many games will support the QUAD SLI, it basically performs pretty good in theory ,even though a GT 120 is comparable to a card less than a 9600gt since the 9600gt compares to a GT 220, they are both like OEM cards
You could always install 4x Nvidia 8800GT MAC versions your self.

















