If you mobo support the 800MHz, yes you can replace.
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"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.". Albert Einstein.
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Reply to saint19
^Yes, but this could be a problem. The system could start to have problems and show blue screen.
------------------------------If you like my answer, select me as the best answer.
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"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.". Albert Einstein.
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Reply to saint19