Originally posted by: kmmatney
The 2 processors you mentioned are quite different in price. The X2 3800+ is now around $160, while the E6400s will probably be around $240+ when tghey become available. The E6400 is the faster processor, but the X3 3800+ is still fast, and you can apply the the money you save into getting a faster video card, which is more important for games.
If you're not overclocking, you can get a Socket AM2 motherboard for $60 (it even has some overclocking ability):
http://www.newegg.com/Product/Product.asp?Item=N82E16813135019
so the total price is: $60 + $160 = $220
For E6400, motherboards are around $140, so: $240 + $140 = $380.
That's $160 left for a better video card!
I wouldn't consider the Pentium D, it was only a decnt option before the AMD price drops.