Originally posted by: miahallen
Imagine an office worker sitting at his desk, and a filing cabnet sitting next to it. He represents the computers CPU, doing all the work. The filing cabinet represents the computers hard drive, where all the info is stored. And his desk represents the RAM. The bigger his desk, the more files he can pull out of his filing cabnet at look at simultanously.
Everything you computer is actively doing/working on, is loaded into the RAM (if it fits). From the OS (XP takes anywhere from about 100-150 depending on the services you have running), anti-virus & spyware running in the "background" are still loaded on the RAM. The average user turns on his computer and will automaticall be using anywhere from 150-250MB of RAM, without doing anything.
Now, a program like Photoshop can be a real memory hog,I mostly work with 3mega pixel pics in Photoshop and it still uses between 150 and 250 MB.If he does anything with 5 megapixel images or higher, load times and filter times will be slow
When the computer runs out of RAM, it uses a "page file", that's when it dedicates a portion of the hard drive to act like RAM. (The office worker's desk gets cluttered, so he has to run back and forth between the filing cabnet and desk juggling files/paperwork) But downhill with the wind at it's back, the page file will still be tremendosly slower than the real RAM, this causes the system to have a noticable lag, and it becomes much more cumbersome to do anything.
So, like everyone else has been saying, 512MB is a good starting point, but 1GB would be advisable.
Very nicely put! :thumbsup: