I represent a small design firm.

We have been using sketchup for a while to suppliment AutoCAD. With the new version of Sketchup now with Layout we are producing some plans entirely in Sketchup/Layout.

Unfortunately we are finding performance issue with our computers.

One machine has decided not to allow saving after working on it for more than an hour. I suspect this may be a RAM issue.

What do people find is a good computer spec, and where do you find the best gains (Videocard, CPU, RAM, SS HDD).

The machine with the most problems is as follows (I am using it as a test bed to work out what to upgrade to get it to work):

Intel Core 2 E8200 @ 2.66GHz, 3GB Ram DDR2, Geforce 8400GS 512MB. (I have currently put a 9600GT 512MB card in it and am awaiting a report)

Any help would be appreciated as I want to update the other computers in the office as we increase our dependance on Sketchup.