What are the specifications? You'll find two standard-configuration models. The $2999 Mac Pro has a 3.7GHz quad-core Xeon E5 processor, 12GB of memory, and dual AMD FirePro D300 graphics processors with 2GB of video memory. The $3999 Mac Pro provides a 2.5GHz six-core Xeon E5 processor, 16GB of memory, and dual AMD FirePro D500 graphics processors with 3GB of video memory. Both models include 256GB of flash storage.
The Mac Pro offers buyers some appealing build-to-order options. You can add up to 64GB of memory, upgrade to 512GB or 1TB of flash storage, upgrade the graphics, or upgrade the processor (to a 12-core CPU).
How do I connect stuff? Unlike the previous Mac Pro, the new Mac Pro has no internal options for connecting PCI expansion cards or internal storage drives. The new Mac Pro relies on its six external Thunderbolt 2 ports for add-ons. If you have an old Mac Pro tower and PCI cards and/or drives that you want to use, you'll need to buy a Thunderbolt expansion chasis for the cards and external cases for the drives.
Wi-Fi and Bluetooth come built-in on the new Mac Pro. The machine has four USB 3 ports, dual gigabit ethernet jacks, and HDMI. Audio professionals should know that the Mac Pro has a combined optical digital audio input and analog output minijack. The computer doesn't have FireWire connections.
How fast is it? Apple says that the new Mac Pro is a "video editing powerhouse" capable of handling 4K video editing, that 3D applications will see "ultrafast rendering," and on and on. And our first set of tests reflect that. If you use Final Cut Pro X, you'll see huge performance gains. If you use applications that can take advantage of as many processing cores as are available, then the Mac Pro really shines.
However, if you're more of a "prosumer" than a professional--someone who is a expert Mac user, but doesn't use high-end apps--then you're not going to see a big jump in performance. You're probably better off with an iMac, especially if you use the iLife apps a lot. iLife actually performs better with the processors in the iMac than those in the Mac Pro.
Macworld's buying advice: If you are doing professional work and require extreme processing capability, the Mac Pro will serve you well. If you're a power user who doesn't need expansion capability, and uses iLife often instead of any pro apps, consider choosing an iMac or a Retina MacBook Pro instead.
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