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Model A1181: 1.83, 2, 2.1, 2.13, 2.16, 2.2, or 2.4 GHz Core 2 Duo processor

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RAM update on 2.16ghz Core2Duo Mid 2007 MacBook to Support SnowLeopard

My current mid-2007 macbook has 1GB memory and can support 2GB according to Apple. I recently updated to snow leopard on my 1GB and was experiencing odd problems; 1st my fan went dead, then I couldn't watch any videos without my computer shutting off. I have installed a new fan but I believe I also need to update my RAM to 2GB to support the snow leopard. I've read here that I can add up to 3GB but that rely on a non-dual-channel. My questions are- Does the 3GB really offer that much more? If I only need 2GB to stream videos and type my papers, should I use the existing 2x516GB and install another 1GB or should I install 2 new 1GB sticks?

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Maxing out the RAM is always a good idea, it's the easiest, least expensive way to upgrade a computer. (You will have to keep ~20% of your total HD free for VMEM swap no matter how much RAM you have). So if you are having freezing problems I'd look at two things, the RAM and the HD. Boot to your install disk and use Tools->DiskUtility:Disk First Aid-Repair Disk'' to repair that HD before attempting an OS upgrade, and Repair Permissions'. Also backup any important files before you switch.''

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My computer has already been updated to snow leopard. I took it to the apple store to do so because my cd-drive is broken. I'm not sure if they went through those steps before the update, but my computer is backed up. I'm not sure how to check if my HD is the cause of the shut downs.

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You can run verify disk from your startup disk Using DU-DFA... but not repair any errors. You can observe the S.M.A.R.T. status there also, generally that gives you a hint your drive is failing.

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