Ah, OK, what he said. Anyway, most of the people asking questions have already looked into the technology. I can help you with board selection, but preferably after you know about the platforms.
Abit IS7 is relatively inexpensive, full-featured, and a good performer. If you want something cheaper that's still a good performer, several sites are carrying surplus Gigabyte GA-8ISXT-FS OEM boards for around $32. The reason they're so cheap? They're surplus OEM boards.
I can't really recommend spending a big wad of money on a "better" board than the Abit IS7 simply because all the more expensive boards are so close to it in performance and features. I tested the Asus P4C800-E Deluxe and found it lacking in quality (VRM issues). I like my Soyo P4I875P Dragon 2 version 1.0, but I got it free and really don't do business with Soyo.
If you'd like newer technology, PCI-Express boards in Socket 478 are kind of rare, but Asus is releasing the P4GD1 with that socket and a 915 chipset. It's similar to previous i865PE chipset boards, except for the type of expansion slots it provides.
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