How much ram can my iMac take?

At the top of this page Click the Support Tab, the click the link Manuals then in the Search Manuals field Search for your Mac with somthing like this.... iMac (20-inch Early 2008 2.4 GHz Intel Core 2 Duo)

I am sure the manual will tell you all you need to know.

There are two answers: the official Apple answer and the "you're on your own" answer.

1 - For the official iMac max RAM, see iMac Memory specifications and upgrades

2 - For the "your're on your own" answer, everymac.com has a list of the Actual Maximum RAM you can put in every model Mac. In many cases this is more than the official maximum RAM.

After deciding how much RAM you want to put in your iMac, I suggest going to Crucial.com and use the memory advisor or system scanner to see what RAM modules are compatible with your iMac.

You can install up to 6GB of memory in your iMac, as noted by OWC. For Mountain Lion, while the minimum is 2GB which you have, 4GB is recommended for performance purposes.

Your system will run a little faster with matched memory, ie 2 x 2GB, as opposed to unmatched, ie, a 2GB and a 4GB. Tests have shown 3% to 5% speed improvement with matched memory, which is due to the Intel architecture's memory access. However, if the programs you run are real memory hogs, the slight speed advantage of matched memory may be offset by having more memory for your programs to run in.

Hi Timek4,

If it is any encouragement, I have a similar model to you, a touch earlier though. I recently increased my memory to 6GB via Crucial.com. It accepted the increase happily and operates better than ever before.

can you tell me how much it cost to do the upgrade

jduncan2385 wrote:

can you tell me how much it cost to do the upgrade

You can easily find out by visiting either Crucial or OWC's website. Both can quote prices online.