New RAM in my new MacBook

Hi All,
Just got my first Mac EVER last Friday. Last night I swapped the RAM over from my old Dell laptop to the MacBook.
MacBook recognized the new RAM fine, however when I click the 'about this mac' link under the Apple icon, it says the RAM is 533 Mhz. I forgot to check before I pulled the old RAM, is the stock RAM 667 Mhz? (I pulled the stock 512 stick and put in two 1 gig stick...2 gigs total now)
Should I upgrade my 2 gigs to 667 Mhz, would I notice a difference?
Am I even correct in "thinking" that there is 667 Mhz RAM?
Thanks in advance,
Jeff

This is the RAM you need.
PC2-5300 667MHz SODIMM
Mort

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Welcome to Apple Support Communities. We're users here and do not speak for "Apple Inc."
Macs are notoriously 'picky' about RAM memory timing!
Although what you suggest about RAM timing might work in SOME computers, your Mac obviously does not work with the 'faster' RAM inserted in both memory slots, hence the black screen and 5 beeps.
Indeed, some sellers label faster RAM with a slower spec, and indeed some computers don't have a problem with that, but it is not true in this case.
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2. Use one of the 2GB with an original 1GB module for a 3GB configuration. It's still a 50% increase in available RAM for your system from 2GB. If you start getting frequent Kernel Panics, that is an indication that the faster 2GB RAM just won't work in your system.
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SERIAL NUMBER: W8946UD366D
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ECC:          Disabled
BANK 0/DIMM0:
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Type:          DDR3
Speed:          1067 MHz
Status:          OK
Manufacturer:          0x859B
Part Number:          0x435435313236344243313036372E4D313646
Serial Number:          0x00000000
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Type:          DDR3
Speed:          1067 MHz
Status:          OK
Manufacturer:          0x859B
Part Number:          0x435435313236344243313036372E4D313646
Serial Number:          0x00000000
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SERIAL NUMBER : W80280KUAGZ
A1286
macbook pro 15 inch mid 2010
processor 2.66ghz
intel core i7
memory 4gb 1067 mhz ddr3
intel hd graphics 288nb
serial number w80280kuagz
software osx 10.9 (13a603)
memory
4gb installed 2x2gb
your mac contains 2 memory slots each of which accepts 1067 mhz ddr3 memory module, all memory slots are in use

alex94598,
the 2011 and 2012 non-Retina MacBook Pros can have a maximum of 16 GB, as can the 2.4 GHz 13-inch Mid 2010 MacBook Pro if it runs OS X 10.7.5 or later.
dreamtunnel,
your two MacBook Pros have a maximum of 8 GB.

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themacintoshdaddy wrote:
On Black Friday last year I purchased 8gb of RAM for the current MacBook Pro. Will this RAM be supported in my new MacBook Pro that I ordered right after the refresh Thursday?
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Gaye Thomas wrote:
But I just read your next post, and it sounds like you think I should do the back-up first, or am I missing something. I think you are now recommending that:
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I would restore SL and do the Combo 10.6.8 update. Then use your backup to load back in what you want. Then do the upgrade to Lion.
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New RAM in my new MacBook

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