How can i get from 800 mhz to 3 ghz

helpmeplz_28

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Feb 6, 2011
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Hello,
i have an old Mac computer i recently downloaded the game minecraft but it runs EXTREAMLY slow, my computer has 800 mhz and 256 MB SDRAM (idk if it matters) my processer is a PowerPC G4. is there any way i can get to at least 3 ghz?