since most people wouldn't upgrade the motherboard, dell's business practice isn't that weird. IT depts don't upgrade bits, most people are afraid of opening the case. the RAM situation isn't as bad as dietrologia says, not like dell isn't shipping crucial in the box anyway. and hardly anyone not using an athlon uses 200 watts. either that or the dell power supply is better than any other 200 watt PS. p3 700 + 3 7200 rpm drive + cd rom + burner + geforce (the old 16 watt one) and it took it and asked for more.
flipdon - unless you're getting an athlon, even better an athlon palomino, plus amd 760 chipset board, DDR is worthless. on the p3 side SDRAM is just as fast as the FSB can handle, more bandwidth is pretty much pointless. on the athlon side most DDR chipsets suck right now.