Hello, I have a 2009 white unibody macbook 2.26 GHz and i want to upgrade it to 8 gb of memory. Every official site said my macbook can only go up to 4 gb, but i see others upgrade their macs (the same model) to 8 gb ram. Can you tell me if i can use these modules for my mac. http://http://www.frys.com/product/6695944?site=sr:SEARCH:MAIN_RSLT_PG
By entering your serial number here to find specs for your model. (Be aware that some models can use more RAM than Apple shows. Check EveryMac or MacTracker to verify.)
That memory looks like it is too fast and MacBooks don't run their memory at lower than rated speeds. The end result is that your MacBook probably won't boot up until you replace one of the modules with a 1067 speed *or* manually edit the speed of the module via software so it reports itself as a 1067 speed.
I don't have the packaging of my 8gb setup in front of me so I can't tell you the exact memory I am using for my MacBook 6,1 but it is either the one I linked or something similar.