Stock (445/265) - 3427
O'C (499/297) - 4174
Using Stock ATI Catalyst 4.7 Drivers
3dMark01 (I have NEVER hit under 10k)
Stock - 10862
O'C - 13822
These scores were impossible to get with the standard "Dell" install. I installed the system fresh and applied all updates INCLUDING XP SERVICE PACK 2 BETA. This update increased my system performance nicely as it has a fix for the P4's HyperThreading capabilities.
When you get drivers for your machine, ALWAYS try to get your drivers from the Chipmaker (i.e., INTEL, ATI, etc.) as they tend to have newer drivers than Dell's so-called drivers. Intel has a newer chipset driver than Dell that helped a bit. There is usually ALWAYS a better driver somewhere... this can be maddening...
Finally, start turning ALL non-essential stuff off, MSCONFIG, Services, Sys Restore, Auto Updates, NORTON, NORTON, NORTON, and once again, NORTON... hee hee. Figure out exactly how i do it and you'll be at the top of Futuremark's online result browser's list for the iXPS, 9100 too!!!! (i did it last thursday...YAY!!!)
...oh and as far as NORTON... it is a great utility suite. Shut down ALL of the automatic crap because if you are in this thread, you should know how NOT to get a virus and how to scan manually. This will take SOOOO much load off your system.
Just my $.02