About the new AMD system I recently bought...
The AMD Athlon 64 X2 4400+ rocks when compared to my Intel system, which uses a Pentium D830. The AMD CPU is running on an Abit NF-M2SV board with 1GB of RAM. The Intel system is running on an ECS nForce 570 SLIT-A v5.1 mainboard and 2GB of RAM. While the Intel system outguns the AMD system, spec-wise, the AMD system is quite a bit more responsive...the whole system seems and responds like it is extremely lightweight. Both are running XP Pro. The AMD CPU runs 104F temps on the average, while the Intel CPU is in the 120F range...and this system has the beefier CPU fan/heatsink too! The AMD CPU cooler is here. It is an Arctic Cooling Freezer 64 LP. The Intel CPU cooler is here and is apparently a standard issue HSF (Intel Socket 775 Cooling Fan, although it is badged as an Ultra unit).
I'm very impressed!
No, I don't have any benchmark specs (you can probably find these online via Google), but this is really a seat-of-the-pants comparison. That I noticed such a difference in this manner should speak for itself.
Now, I've split the 250GB drive on the AMD system in half, to test Slamd64, an unofficial 64-bit port of Slackware (which is a 32-bit OS). I've run into issues booting up Slamd64, though...I've been getting SATA-specific errors that hint that the hard drive is going bad (which I seriously doubt). I think I've seen these errors before when I last installed Slackware on a SATA drive...I think I selected the wrong kernel. I need to select a kernel specific to SATA support. I'll work on this during the next 7 days and report my findings here.
I'm seriously thinking on swapping the Intel machine for the AMD one, since the AMD machine appears more robust.