The Revit and just about every other application will scream on the hardware you describe. Unfortunately Revit release 9.X will take advantage of every feature except the full 8 GB of RAM. That is not to say your system will not use the RAM for multi-tasking applications.
When VISTA or XP64 OS is released sometime this coming Spring you should see significant performance gains out of your systems RAM and Revit 10 or 10.X should be capable of using every ounce of RAM you have up to 32 GB.
I also bought a screaming system a few months back, specifically the DELL XPS 700 with Dual Core 2 6800 processor, 4 GB RAM, Dual Channel DVI w/512 MB of RAM on each channel and a 30" flat panel monitor in dual mode with a 24" flat panel monitor and a THX 5-speaker surrond sound system. Not only does it scream, but it is visually awesome and blasting radical.
Great to see some of us Revit users are kicking up the speed, expanding our visual panoramas and tuning up the sound.
Rock On Reviteers!
By the way, who is going to AU this year, can we link up at the Revit Mixer Monday night or at one of the lunch sessions. Send me email off-line and I will try to coordinate a meeting. Sound off and we will make it a date. I am arriving Sunday mid-day and staying through Friday mid-day (end of sessions). After AU i will be on the road for the next three weeks.
Mel Persin, AIA
AEC Technology Consultant
Professional Services Group
MasterGraphics, Inc.
mel.persin@masterg.com/melarch@covad.net