So, without getting into the whole, apple has a prettier case, I like OSX, etc... The new 'Apple Tax' on these new mac pros is huge. COMPARING ONLY HARDWARE POWER the NEW baseline New Mac Pro uses the X3500 Xeon series chips, which is comparable to a HP Z400 workstation. You can configure a comparable HP workstation (With Quadro Professional Card not ATI consumer) for $1733, while the Apple workstation is $2499. The HP z400 gives you the same amount of PCI express slots, same RAM capabilities, same hard drive bays but in an 'uglier case' .