Here is a link to what was added in CS6. http://forums.adobe.com/thread/979969
I have read in past posts that PS is more a memory intensive program than a CPU intensive program, so it appears more RAM is better than a faster processor. It is not uncommon to have 24 g of RAM now.
The lag with big brushes, liquify, blur, etc. is highly dependant on the video card and specifically the driver.
So it seems that 8 gigs of RAM and 1 gig of VRAM is necessary for average performance with some tools.
PS does use multicore processing but still uses just one video card.
wow. thanks a bunch.
My old graphics card is from 2004 when I bought my computer (which I've since upgraded MOBO & CPU)
Asus ATI Technologies Radeon 9600 SE 128 MB DRR2 Video Adapter
Frame Buffer 128MB DDR
Yeah 8 year old technology.
I was specifically interested in the lab for big brushes. I was planning on getting 8GB RAM total in 4GB sticks so I'll have 2 open slots to add more if needed and for future.
You don't have to get a top end video card as the middle of the road ones seem to work well. For you probably 2 gig of VRAM and either a ATI or Nvidia card recommended.
Should add that you can allocate 6 g to PS and leave 2 g for computer.