iMac RAM in Early 2008 macbook?

[AcesHigh87]

I’m looking into upgrading the speed of my early 2008 macbook and have decided that the easiest solution is an SSD and 4GB of RAM (it can apparently hold 6 but I’d rather have the 4 paired)

The problem arose when I saw the prices. RAM isn’t EXPENSIVE but it’s still more expensive than the stuff in my iMac which I’ve been looking to upgrade further anyway.

So, I got the thinking. If I can buy 8GB for my iMac for cheaper than 4GB for the macbook, why not just take the 4GB I have in the iMac, pop it into the macbook and then buy an 8GB set to replace it. Sounded like a great deal...in theory.

My question is, and I think I already know the answer, will it work? The default apple RAM installed in my macbook is only 667 MHz DDR2 SDRAM while my iMac is running 1333 MHz DDR3.... Clearly they are not the same thing. Am I right to assume that my theoretically cheaper plan wouldn’t work as the macbook couldn’t handle such strong RAM?

 

[SanderDeclerck]

DDR3 Ram won't work in a machine that only supports DDR2 ram.

I also think the ram for your iMac isn't the same as the ram for your macbook (ram in a laptop is usually smaller). I could be wrong about this, however, I can be sure when I tell you it won't work.

 

[simsaladimbamba]

All Macs except the Mac Pro use notebook RAM, either 200-pin DDR2 SO-DIMM RAM or 204-pin DDR3 SO-DIMM RAM.
200-pin DDR2 and 204-pin DDR3 RAM are not compatible with each other, due to different pin count and RAM type.

 

[AcesHigh87]

All Macs except the Mac Pro use notebook RAM, either 200-pin DDR2 SO-DIMM RAM or 204-pin DDR3 SO-DIMM RAM.
200-pin DDR2 and 204-pin DDR3 RAM are not compatible with each other, due to different pin count and RAM type.

That’s what I thought. Looks like I’m spending the extra money; oh well. Thanks.