It's all in the eye of the beholder. To many people the old POS is good enough, and quite frankly the desktop you listed, to me, is an old POS that I wouldn't keep, I might not throw it away but I'd sure give it away without a second thought as it has no purpose for me.
Frankly for people who only do web browsing anything faster than
a 2.0Ghz single core CPU with 2gb of Ram is probably a waste of hardware.
I neither Game nor do any video editing so anything newer/faster would be of highly doubtful advantage.
My CPU is as fast as most dual core CPU's, though less power efficient
So I burn 135watts when a C2D machine of identical performance would burn 85watts... BFD.
The difference is my machine can and does run Windows7.
the old machines I look down at don't even run XP all that well.
THE most processor intensive thing I do is to convert an occasional .flv video file ("Flash Video" YouTube video) to mp4 (iPod video format) because mp4 is currently a bit more of a universal format.
frankly for >95% of what I do a computer with 64GB of ram running a 64bit OS on twin quad core CPU's woudn't be any faster doing what I do
Metaphorically speaking: my "Five year old retired Police car" drives me to Best Buy and the post office" just as well as a shiny New Ferrari FF would
I have doubts that some of the rusted out Ford Maverick with rod knocks can drive these people to their own rural mailbox reliably...
My dc7600 was never "State of the art", but it was once about a year behind
It's still faster than the typical shiny new Walmart desktop system that comes complete to keyboard and mouse in one big cardboard box for $600
Shades of grey...
That all being said, I am upgrading to a newer computer.
a Mid-2009 Vintage HP desktop that was purpose built as a media center computer, specifically a Pavilion Elite D5000T, 2.66Ghz C2Q 8g Ram
and 64bit OS.... (Asus IPIBL-TX "burbank" MoBo) Just as soon as I can get to NJ to pick it up.
AD