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DDR3 1333 PC3-10600 or PC3-10666 memory?

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November 26, 2011 7:59:18 PM

I bought a Toshiba (L755-S5308) with an i5 processor...got 4gb (2x2gb) of ddr3 1333 memory already in there and I want to upgrade to 8gb of ddr3 ram. So, I went on newegg to search for some memory and saw that there are two types of ddr3 1333 memory...a PC3-10600 and PC3-10666.

My questions are:

1.) Which one is compatible with my laptop?
2.) Which one is better?
3.) Can I use DDR3 1600 (PC3-12800) and DDR3 1866 (PC3-15000) as well?

Thanks in advance!

P.S. Just a heads up...crucial.com does not feature my model for some reason. I even ran the memory identifying tool they have and produced no results.
a b } Memory
November 27, 2011 1:21:10 AM

Both PC3-10600 and PC3-10666 memory will work. They are the same, just rated differently for marketing.
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December 12, 2011 1:30:58 AM

I'm a bit baffled after reading the wiki article. I want to add 8GB to my Acer 1830T (supported despite manufacturer claims) and the memory bus speed is 800 MHz according the the specs. All the memory upgrade sites recommend PC3-8500 or PC3-106xx, but shouldn't it be using PC3-12800 according to the DDR3 specs?

http://en.wikipedia.org/wiki/DDR3#JEDEC_standard_module...

That's the only module listed at 800 MHz.
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July 17, 2012 7:44:02 PM

Funny thing is, I tried to install PC3-10666 on a Lenovo 575 which previously had PC3-10600, and It wouldn't take. Computer wouldn't even turn on. However, I installed the same ram on an an HP DV7 laptop which is rated for pc3-10600 and the 10666 worked just fine. I guess it's a toss up.
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a b } Memory
July 17, 2012 8:07:22 PM

Agentdouble0soul said:
Funny thing is, I tried to install PC3-10666 on a Lenovo 575 which previously had PC3-10600, and It wouldn't take. Computer wouldn't even turn on. However, I installed the same ram on an an HP DV7 laptop which is rated for pc3-10600 and the 10666 worked just fine. I guess it's a toss up.

Was the new memory the same timing and voltage as the memory that was already in the machine?
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