heck no, check out this:
Mwave - 2800+ A64 Retail (118) on Shuttle nforce3 250 mobo (40) w/ 512 crucial DDR400 ram (44)= about $215 shipped
NewEgg - Case of your choice, keep it to about $50 shipped w/a decent PWS, gigabtye 9200 (128 Bit - that is really important! - 48), NEC Black DVD-RW(48), Samsung 80 gig IDE hard drive(54), Logitech Keyboard and mouse combo(20) - $235 shipped
What do you think about that? It would be a great general purpose box, and could still play most games (forget FarCry, HL2 or D3 though...) But for $450 it would be hard to beat. The only consideration might be a semron 2800+ to spend a little more on the vid card, but that is it... with the 2800+, you could always get a nicer card later and not be to bottlenecked.
Additionally, to get it closer to $400, get some cheap rosewill ram and the sempron and call it good 🙂
*Edit* - oh yeah, a 2800+ sempron retail from newegg is $83 shipped, and cheap ram like OCZ value would save another $5, getting you right down to $400
Nat