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Originally Posted by Josiah Olson
powerbooks are fast enough and you can get 128 mb graphics that's plenty for most games (if you can find them for mac) the powerbook is smaller
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i assume you're new. see, the thing about grapihcs cards is not always just the size of the onboard ram (i am not saying it is not important 128mb is always better than 64, its just not everything). The GPU speed counts quite a bit too. I have an ATI9700 128mb, its a fine card, runs all the games out right now quite well, HL2, FarCry, NFSU2 all run quite well. The problem is that it won't run FUTURE GAMES very well. This is where PCI-E comes into the picture. A lot of it has to do with the connectors since AGP only goes up to 8x, PCI-E starts at 16x making for better communication of data, allowing the clock speeds to get higher for the processing unit (GPU) and thus make the card faster and more efficient, so at the end of the day here are some comparisons:
ATI 9700 128MB > ATI 9700 64mb
ATI 9700 128MB > ATI 9600 128mb
ATI 9700 128MB < ATI 9700 128MB "Pro" (slightly OCed)
ATI 9700 128MB > ATI X300 128mb
ATI 9700 128MB < ATI x700 128mb
ATI 9700 128MB < Nvidia 6600go 128mb
ATI 9700 128MB ~ ATI X600 64mb
so Dell's Nvidia 6800GT 256mb >>> Apple's ATI9700 128mb
this gives you a general picture.