MacBook Pro ------------- Intel Dual Core 1.67 and 1.83 GHz, both with 15.4" 1440 x 900 screen RAM: DDR-2 667 MHz SODIMMs, 2 sockets, max. 2 gb - Stock configurations ship with a single 512 or 1 Gb SODIMM, leaving one empty socket (good) - PC5300 667 MHz RAM not exchangeable with any other Mac RAM Dual-link DVI can run 30" LCDs ATI Mobile Radeon X1600 graphics Serial ATA 2.5" hard drive, cannot swap drive mechanisms with any Powerbook or iBook. ExpressCard/34 PCI-e- derived expansion slot externally Both analog and optical audio Inputs AND Outputs (good) No PCMCIA card -- ExpressCard/34 instead - means no expansion cards immediately available, and existing PCMCIA SATA/Audio/Firewire/Wireless/LAN cards cannot be used. No Firewire 800 No Modem -- USB modem optional No Dual-Layer Superdrive Cannot run Classic (OS9) Programs Notes: On the website Apple makes great performance comparisons with "Previous shipping G4 15 inch model" but doesn't specify which model. What are you hiding, Apple? Apple has leapfrogged most of the industry with RAM -- virtually all high end Wintel laptops have a maximum 533 MHz DDR-2 SODIMM memory architecture. With this model, Apple have signed the death warrant for modems and PCMCIA in Macs. Dropping of Firewire 800 will be troubling to Mac users doing digital audio and video. Edit: (credit to Escher) Apple have obviously had their fill of replacing power supplies and Powerbook AC jacks because of broken cords and cracked solder joints internally, so the magnetically attached AC power plug is a good idea. Points to Apple for being the first company to come up with something different here.