Can my iMac that has 3gb of memory run lion and lightroom

Can I run lion and lightroom on my iMac. the computer only sees 3bg of ram

I sincerely doubt it!
You have a 2006 model iMac that can only handle up to 3 GBs of RAM.
OS X, by itself, needs between 2-4 GBs of RAM to do its stuff smooth, quickly and efficiently.
Every update and iteration of OS X uses more CPU, GPU, RAM and hard drive resources.
You start running a high resource app, like Lightroom, along with OS X and your iMac is going to take a pretty good hit on performance.
It all boils down to not having nearly enough RAM memory for the application and tasks you require.
Here are the Minimum specs for installing OS X 10,7 Lion
http://support.apple.com/kb/HT4949
Here are the minimum specs for Adobe Lightroom
http://www.adobe.com/products/photoshop-lightroom/tech-specs.html
You would need at least 6 GBs of RAM to be able to run OS X and Lightroom
Based on your previous post, you must be taking a serious performance hit already running Lightroom or Photoshop.

Similar Messages

Maybe you are looking for