Intel has done a good job of marketing the Pentium 4, so that many people feel that if a system DOESN'T have a Pentium 4 CPU in it, it is inferior to a system that does. My preference will nearly always be for a system with the Athlon XP, though. The Athlon XP can provide performance equal to that of the P4 at a significantly lower price. If you absolutely have to have the fastest CPU available, you'll probably go with the P4 (and at a premium price). If you want to the best buy for your money, I would recommend the Athlon XP. Tom's Hardware Guide (
agrees, in its comparison of the Athlon XP 2600+ and the Intel P4 2800, in which it stated, "As always, price-conscious buyers who are interested in getting the best price/ performance ratio are a bit better off with an AMD Athlon XP than with a P4." (
Bear in mind that the P4 would probably cost double what it currently does, if it weren't for AMD's competition. Intel has undergone numerous price cuts over the past year, amounting to something more than 50%. But the Athlon XP's market share in still increasing.
To fairly compare the two exmaples that you've listed, remember that the AMD Athlon XP 1700+ is actually running at a speed of 1400 MHz, in contrast to the P4's speed of 1700 MHz. And yet the XP 1700+ outperforms the P4 1700 in nearly all benchmarks. Also, the memory rates are misleading (400 MHz for the P4 vs 266 MHz for the XP), in that both of them are working with the same amount of data (32 bits), but it's just that the Athlon XP is simultaneously working with 2 "chunks" of 16 bits each (Double Data Rate, or DDR), while the P4 is simultaneously working with 4 "chunks" of 8 bits each (Quad Data Rate, or QDR). A better comparison would be of the FrontSide Bus (FSB) speeds: 100 MHz for the P4 vs 133 MHz for the Athlon XP.
In addition, SocketA motherboards (for Athlon XP, Athlon, and Duron processors) nearly always cost less than comparable Socket478 motherboards for the P4.
My recommendation (if you haven't already guessed):
Go with the Athlon XP!
Rich (in Minn.)