Are the 2 1Gb sticks new, and the 2 512Mb ones from before the upgrade? You may not notice a speed boost because the 2 1Gb RAM sticks are having to run at the old 512Mb clock speed. Can you tell us what the clock speed (MHz) of the 512Mb sticks of RAM, and the 2 1Gb sticks of RAM. Your 'Lack of performance' may lie there.
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Posting Maven
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