Motherborad & Memory match

A.Penny.Saved

eBay is probably the only place you could find a socket 478 DDR/AGP board now. I don't think largish retailers would keep them. You could try the clearance section of online retail sites.

You could find the names of suitable boards and then search google for the board to find any where that might still list them.

But is it worth it for such an old system? P4's weren't much good anyway because they used so much power. They might be okay for a few minutes internet a day but for anything else it would probably be better to get something newer and more power efficient.

Here is a 478 DDR board with integrated graphics and no AGP but the price will probably make you faint.
http://www.lambda-tek.com/componentshop/index.pl?prodID=B232477&viewSpec=y&showold=#productTop