Does adding 1066Mhz DDR3 SODIMM to a 1600Mhz FSB laptop make sense?

Posted by Alain Pannetier on Super User See other posts from Super User or by Alain Pannetier
Published on 2012-08-28T10:59:44Z Indexed on 2012/08/28 21:42 UTC
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memory

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clock

My previous laptop had 4x4GB 1066 Mhz DDR3.

My new laptop instead has only 2x4GB 1600 Mhz DDR3.

Using dmidecode I gather my FSB is set to 2300Mhz.

Max Speed: 3800 MHz
Current Speed: 2300 MHz

2 questions:

Can somebody confirm I can safely add two "old" 1066Mhz modules to my new laptop before I treat myself to faster DDR3 modules?
I understand this should not slow down the faster 2 1600 Mhz DDR3 modules. Correct?

If this is of any relevance, I'm running Linux Mint Maya.

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