I try to upgrade my iMac early 2008 with existing 2GB memory and new 4GB memory (Komputerbay 4GB DDR2 800MHz PC2-6300 PC2-6400 DDR2 800 (200 PIN) SODIMM Laptop Memory) but it doesn't work. When I insert this new memory, there is 3 error beeps. Is this memory compatible with iMac or is there something wrong with this memory?
Thank you,
imac, Mac OS X (10.5.6)
The RAM type PC2-6400 DDR2 SDRAM is correct.
http://www.everymac.com/systems/apple/imac/specs/imac-core-2-duo-2.4-20-inch-alu minum-early-2008-penryn-specs.html
Officially your iMac support a maximum of 4GB.
I tried new memory on its own but it had same error 3 beeps and didn't work. I guess this memory is damaged?
Be sure to buy compatible memory. Macs are sometimes finicky about RAM.
Is this memory compatible?
Komputerbay 4GB DDR2 800MHz PC2-6300 PC2-6400 DDR2 800 (200 PIN) SODIMM Laptop Memory
Unfortunately I cannot tell you. You must check against manufacturer specs, better if it states specifically compatibility with Apple
Hi. Are you attempting to upgrade to 6 or 8gB? The maximum for your machine is 6gB.
Stedman
This is the kind of RAM your machine takes - PC2-6400 DDR2
Do not mess around with RAM. It is the quickest way to turn your machine into a large black box.
I've always upgraded with Crucial RAM and have never had any issues.
Here is a link to a guaranteed RAM upgrade for your iMac - 2 x 2GB sticks $61.99 - A small price to pay for confidence.
http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=39D3BF46A5CA7304
You only get what you pay for. I had a quick net scan for reviews of Komputerbay RAM and it wasn't very favorable.
I am trying to upgrade from 4 to 6gb.
And this memory is PC2-6400 DDR2 4GB
also, review said it works with iMac. But it's not working with mine.
I will try with Crucial then.
It's not working with yours? What brand RAM is it? Are you sure of the model iMac you have? Is it the 2.8GHz 24"? Is it the Extreme model?
Please don't think I am being derogatory, but are you sure you pushed them all the way in? They go in about 3mm inside the recess.
The brand od RAM is Komputerbay, I bought it from Amazon UK.
Komputerbay 4GB DDR2 800MHz PC2-6300 PC2-6400 DDR2 800 (200 PIN) SODIMM Laptop Memory
My iMac is 24 inch early 2008, 3.06GHz Intel Core 2 Duo, OS Lion 10. 7. 3
It's pushed same level as the other 2 GB RAM which is working. So I thought this RAM itself is damaged or not working.
No problem, just had to check. I read about Komputerbay RAM on the net and one person said they had three out four sticks fail. Cheap RAM is exactly that, cheap! I just put 8GB of Crucial RAM in my 2009 24" iMac without a hitch what-so-ever.
These are the specs for your machine. you should bookmark it for future use:
http://www.everymac.com/systems/apple/imac/specs/imac-core-2-duo-3.06-24-inch-al uminum-early-2008-penryn-specs.html
The specs state you can out 6GB in your machine, but Crucial won't guarantee it. However, if you do decide to go for 6GB have a look at OWC (Other World Computing) they sell 6GB packs as an upgrade for you model.
OWC RAM upgrades - http://eshop.macsales.com/shop/memory/iMac/Intel_Core_2_Duo_PC2-6400
I know it's an old post but just wanted to drop a line and say that I've been seeing a very stable iMac operation since I upgraded my machine to 8GB of RAM. It's an early 2008 (not 2009) iMac, which pretty much everywhere seems to be cleared for working with up to 6GB. I am really not sure why it works with 8GB and how come that it doesn't crash.
Check my other post is you are interested in more details: https://discussions.apple.com/thread/4884412?start=0&tstart=
24inch intel core 2 duo iMac early 2008 memory upgrade
