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Upgrading Laptop CPU - I5-520M

Last response: in CPUs
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The i7 620m and 640m and i5 580m 560m and 540m are slightly better. I5 520m is a very fast cpu, no point upgrading it. Don't downgrade it to the old 45nm i7 720qm junk that takes 30w more for 5% extra performance multi threaded. Also you can't upgrade it to a newer series cpu as it is not compatible.
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