Thanks Thorsson for spotting my errors.
To make up for it, here's a slightly more relevant review of Photoshop CS 3 on the E7200.
I've heard of the separate scratch disk idea, but am unsure if buying a new drive for the job would be worth it - it's perfect for those old, smaller drives we seem to accumulate over time. You might even be able to create a RAMdisk scratch disk, if you opt for a whopping amount of RAM:
Some apparently useful threads I found on this from 5 minutes of googling:
http://luminous-landscape.com/forum/...howtopic=25705
http://photography-on-the.net/forum/.../t-279194.html
http://www.pcworld.idg.com.au/index....pid;1277378924