I am going to be buying a PowerMac dual-1.8GHz and I'm looking to upgrade to 2GB of RAM (4x512). I used Crucial's wizard to find this module, at $84.79 currently. However, I clicked the PC3200 link on their left nav bar and I found this module at $79.99. From what I can tell the specs are identical, so why in the bloody hell is there a $5 difference in price?!?