I've just recently went Dual Core. Pentium D 805 at 3.6GHz from Athlon XP 2800+ (2.08GHz) and man is this thing awesome at multitasking. Today I've spent almost whole night organizing over 400 Gigs of files. Made great directories, renamed properly, photo/video organizing. Well a big thing in quite few years. So I've been running Remote Desktop 800x600, copying 10Gb folders, with quite few explorer windows, + watching old Screensaver videos on YouTube. And this whole thing is only using 80% of CPU. And to tell you about working with video.... I love it. I'm capturing through firewall MiniDV tapes, or encoding video, and I can do most things with my PC, where before I had to wait. If you're multitask a lot.... I totally reccomend Dual Core!