3 Replies Latest reply: Dec 12, 2009 5:43 PM by Kenichi Watanabe
Nvrdan1de Level 1 (0 points)
Model Name: iMac
Model Identifier: iMac4,1
Processor Name: Intel Core Duo
Processor Speed: 2 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 2 MB
Memory: 1.5 GB
Bus Speed: 667 MHz
Boot ROM Version: IM41.0055.B08
SMC Version (system): 1.1f
I mostly use it for recording and video and just recently its starting to hicup when running music applications. I want to max it out and was told only 2g but I wanted to make sure before I purchase the ram. I tried turning off applications that were taking up a lot of memory but it seems that I was still getting some hesitation among programs..
I currently upgraded to Leopard, 4-months ago and no hesitation never occurred till recently.
Does anyone know what application can be turned off so that I can have the ram only for big demanding programs.
I am almost maxxed out of hard drive space about 11gigs left..would that have anything to do with it? Should i just dump movable files on to my external so that the ram doesnt have to work that hard. When I check the ram usage almost all of it is being used. Any advice greatly appreciated.

Imac, Mac OS X (10.5.8)
  • Randy Pozzi Level 2 (165 points)
  • rkaufmann87 Level 9 (55,218 points)
    2 GB is the maximum amount of RAM your iMac will take.The more available RAM your machine has the better, if you want to know what is using RAM then run Activity Monitor, then you can see what applications are taking up a lot of RAM and quit the unnecessary apps.

    The machine will also slow down as the internal HD gets to about 10% or less of capacity, if you have less than 10% left then you should look into either deleting files you don't need or get an external drive and move them to that to free up internal HD space.


  • Kenichi Watanabe Level 7 (32,822 points)
    If it's Core Duo (not Core 2 Duo), the 2GB (2x1GB) is the maximum RAM. If the identifier is iMac4,1, it is Core Duo

    http://www.everymac.com/systems/by_capability/mac-specs-by-machine-model-machine -id.html

    I am almost maxxed out of hard drive space about 11gigs left.

    That is more likely to be the problem, not lack of RAM. When free space on the hard drive gets low, the remaining space gets more and more fragmented into tiny pieces, as you write new data and delete old data. When there is plenty of free space, you have a large blocks of contiguous free space. Mac OS X needs free space on the startup volume for its basic operations. It write and reads hidden files to do things like virtual memory (used when you are low on real RAM). Some of those files can get very large, and if the remaining free space is in tiny pieces scatter all over our drive, the system may start to bog down.

    You should first off-load or delete data so that you have at least 10% of total capacity as free space. That may restore performance enough so that you don't need to get more RAM. Free up more space if possible.

    Then, at some point, you should back up at least your personal data. Then erase (reformat) the internal drive and reinstall the OS and software. After confirming everything is running smoothly, restore your personal user data.

    Note: It is possible the performance issue is caused by your hard drive starting to fail, or a data corruption problem. So if you do not have a good backup of at least your personal user data, you should make one now. Then, you can proceed with troubleshooting.