Robf wrote in post #3881139
depends on how hard your going to push it with how big a file...certainly if you feel you definately
need 6-8gb then i would say your better off pushing the processor option as fast as you can...if your working on small files then you might get much faster results that way.
the ram is the gas tank, but the processor is the engine...its all very well never running out of gas, but it's less fun if your foot is to the floor all the time.
ram is cheap, but i would personally go for as much speed as you can afford.
disk wise, 2 disks are better than one fast one...you want PS's scratch on a different drive from the OS...
If you're not working on files in the several hundreds of megs range, you'll be in good shape with 4G of RAM - PSCS2/3 can only grab 3, and that's MASSIVE overkill if you're not working on gigantic files. The extra gig+ will handle the OS and other stuff easily.
The processor speed you (probably) will never notice - you only run huge filters so often and the difference between a 20 and 23 second smart blur 4 times a day is pretty negligible. For most other day-to-day tasks, the 2ghz processors are more than adequate.
I'll second the call for a dual drive setup, though with enough RAM you won't be using the scratch disk much. It'll still be nice to have a drive just for your working files. Use the 10k for a working drive and a slower, smaller one for a system drive.
Then again, if you've got the cash, spend it any way you want :P