Memory upgrade question

cluis89

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Nov 14, 2014
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I'm upgrading the memory on my friends laptop. It has an i5 2430M and supports DDR3-1066/1333. I also checked out the motherboard specs and it supports DDR3/1333MHz. I got on newegg and see the following choices
DDR3 1066 (pc3 8500)
DDR3 1333 (pc3 10600)
DDR3 1333 (pc3 10660)
DDR3 1333 (pc3 10666)
If want the best memory the cpu and motherboard can handle what should I get?