Sorry for the OT post, But I want to warn everyone not to buy Asus motherboards for Athlons. They have been crippled by Asus itself to disable the HLT instruction.
You can read in a FAQ as asus.com that they disabled the HLT instruction because using this instruction the processor draws 60 Watts (or so) when non-idle and only very little power while hlt is active. However, this continuous sudden change in power dissipation seems to be very difficult to handle for the power supply and you run risk that your board will no lunger run stable. In my opinion, my computer should try and save power when it is idle, so the best solution was to add a switch to the BIOS to allow/disallow the HTL instruction and add some more capacitors and/or inductivities to the board (well, I'm not a board designer, though). [I would like to buy an Athlon-board (probably ASUS?) in the near future.] Cheers, Wolly