How much RAM can my macbook take? please help!

ok, my macbook was bought UNFORTUNATELY in october 2007 just 1 month before they changed the max to 4 gigs of RAM as max, now... ive heard different stories...
1.- My macbook can take up to 2 gigs of Ram
2.- My macbook can take up to 3 gigs of Ram
.. which one is right?
thank you in advance!

art_brana wrote:
i think i found my answer to the question my macbook only takes 2 gigs of ram
http://www.crucial.com/systemscanner/viewscanbyid.aspx?id=3612D07131D926C3
The "official" support is only for 2 GB. The evidence from people who have tried is that approximately 3GB is the actual maximum. You could either drop in a 2GB and a 1GB, although 2 2GB modules will supposedly work with part of the memory unused. The OS can only use 3 GB but I think one of the reporting mechanisms will say 4 GB.
Crucial.com only sells modules through their memory selection tool that corresponds to officially supported configurations.

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Reading system memory usage in Activity Monitor
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Deja Vu
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JaBack
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MimMac
Retrospect
Super Flexible File Synchronizer
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I've seen a bunch of these type of questions on here, and have gotten mixed answers. Some people say that the max is 6GB and some say the max is 8GB.
Here are my specs:
MacBook Pro 15-inch, Mid 2009
In Memory it says:
Your Mac contains 2 memory slots, each of which accepts
a 1067 MHz DDR3 memory module.
I currently have 2GB of RAM in each slot
Crucial seems to think that I can get an 8GB upgrade kit:
http://www.crucial.com/store/listparts.aspx?model=MacBook%20Pro%20(15-inch%2C%20 Mid%202009)&Cat=RAM
has anyone done this with a similar comp? Is 8GB possible?
Thanks for your help!!

A model 5.4 15" 2009 MBP will recognize 8 GB RAM with the following specifications: 204-pin PC3-8500 (1066 MHz) DDR3 SO-DIMM.
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Ciao.

How much RAM can my macbook take? please help!

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