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How can you tell if RAM is defective?

I recently upped my RAM from 8 GB to 12 GB. System Profiler shows I have 12, and I ran the Hardware Test, and it didn't say anything was wrong. However, since installing it, it seems if anything, my computer is running more slowly, especially my Safari. Would I not be able to tell the difference in speed of windows opening, functioning of programs, etc?

iMac, Mac OS X (10.6.8), 21.5" ,3.2 GHz i3, 12GB Ram,

Posted on Nov 13, 2012 3:03 PM

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22 replies

Dec 14, 2012 3:46 PM in response to Saxman

Adding RAM only makes it possible to run more programs concurrently. It doesn't speed up the computer nor make games run faster. What it can do is prevent the system from having to use disk-based VM when it runs out of RAM because you are trying to run too many applications concurrently or using applications that are extremely RAM dependent. It will improve the performance of applications that run mostly in RAM or when loading programs.

How can you tell if RAM is defective?

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