I have a G4 iMac 700 mhz and a P4 2.4 ghz. When i tested to see which was faster, the iMac out did the PC all the way.
Both systems have 512 mb ram, iMac PC 133 and the P4 has 512 2100, iMac has a 32 mb video car and the PC has a 64 mb video card, iMac has a 40 gig hd and the PC has an 80 gig hd.
I run itunes on both, but the iMac runs faster and smoother that the PC version. Adobe, Appleworks, IE vs. Safari, I as well have IE on the Mac too...
The internet on the iMac is much, much faster than on the PC that I have. I am on high-speed dsl.
Bottom line, the Mac runs better than a PC ever will, PC's are too messed up with a poorly written OS (MS) that controls the user instead of the user controlling the computer.
Until Apple writes an OS for the PC users (maybe someday it will happen) Apple will always out perform PC's in just about every way possible.
Computer Style, faster OS's and of course ease of use and installs.
I use my imac daily, and the PC is a dust collector, sad, but true...
I do use the both of them, but the iMac out performs my 2.4 ghz P4 all the way.....