Well, with AMD processors you HAVE to include another manufacturer's chipset... that has historically been a drawback with AMD processors all along.I bet you really mean VIA crap.
Heck, I'd say the KT333 was competitive and then the nForce2 chipset rocked... until then, Intel always had better chipsets.
I've got an Athlon 64 rig right now myself and IMO, the platform is junk. I look forward to nForce4 because nothing available right now is very good (IMO). Sure, the processor is fast and I've got 64-bit architecture ready to go as soon as Microsoft sees fit to release their 64-bit OS.
Also, when you compare Dell to a home built AMD machine, you need to think about support. Don't get me wrong, I have no delusions regarding Dell's support, or ANY OEM's support for that matter... but I'd probably rather be stuck with Dell than Gateway, HP, eMachines, or whoever.
My advice to people is:
If you can build and support your own machine - do it. If you can't, suck it up and buy a Dell.
You might find a cheaper machine than a Dell, but people WISH they had a Dell when they start having problems with their machine and they have to wait in line at Best Buy for an hour so they can come back and pick up their machine 2 weeks later.
I like AMD and the best value I think I ever got from a PC was an nForce2 and OC'd Mobile XP sproc AMD machines have a lot of things going for them... but you can't discount all the advantages you get with Intel and a decent OEM like Dell. There are other aspects like customer support, chipset reliability that are factors.
No, I wouldn't buy a Dell for myself, but I made sure my Dad (who lives 800 miles from me) bought one.