I've got a fairly decent P4-478 system. (Dont laught, gentlemen!) I'm not unhappy with it... for the purposes for which I use it. I'm not a big gamer. The main "bottlenecks" in performance for me are: media encoding, e.g. DVD/CD to Divx/MP3, archive zipping/unzipping, photoshop work, and multitasking. For main productivity work - MS Office, Acrobat, Printing, Internet research, I have zero complaints with the machine. So what should I do "for Christmas"? 1./ One option is to replace the WHOLE system, for $700. Not just the cost, but VERY TIME CONSUMING for a full reinstall of everything. 2./ Second option is to drop-in a P4 3.2 Extreme Edition, for $100, into the existing setup. Then ebay the P4 2.8 Northwood, and recover something. Not much, but maybe $30-$40. Net cost $70. What do you think? I imagine I will get about 20-30% performance increase with the 3.2EE over 2.8. And I guess around 50-100% performance gain by going to Core 2 Duo rather than 3.2EE, but at a 10:1 cost ratio compared with the simple upgrade. I'm not wanting to break benchmarks or run the latest games. Just productivity software. What do you think?