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Product Description Design • Expansion made easy
The redesigned interior of the new Mac Pro feels like the well-organized workstation it is. No rat’s nest of components here. You don’t need to turn the system on its side or struggle to reach into awkward spaces to make changes. Just remove the side panel for instant, easy access to everything. Slide out the processor tray to add memory. Slide out hard drive bays to add storage. Slide a simple bar to change up to four expansion cards at once. And with plenty of I/O ports both front and back, you’ll have room for all your external devices.
• Tool-less PCI
When it’s time to upgrade, a quick slide of the retention bar frees up the four expansion card slots for easy access. Thanks to a thumbscrew PCI bracket, you can swap out cards without any tools. All four slots are now PCI Express 2.0 for up to twice the performance of the previous generation. And since the graphics slot in the Mac Pro is double-wide, your graphics card won’t cover an adjacent slot.  • Slide-in storage The Mac Pro comes with four 3.5-inch internal hard drive bays for an enormous amount of internal storage — up to 4TB.* The bays are direct-attach and cable free, so it’s easy to add or remove drives. Just attach the drive carrier to a Serial ATA 3Gb/s drive and slide the drive into place. There are no connectors or cables to contend with. Lock the drives with the side door latch, and you’re done.  • Snap-in memory Install more memory in your Mac Pro in a snap. Literally. The redesigned interior lets you slide out the processor tray in one smooth motion, then simply snap new memory into place. You don’t have to dig around inside the computer or wrestle with wires or cables. The quad-core Mac Pro offers four slots that support up to 16GB of 1066MHz DDR3 ECC SDRAM, while the 8-core Mac Pro offers eight slots that support up to 32GB.
• Front and back I/O
There are plenty of places to connect external devices to your Mac Pro. You’ll find two FireWire 800 ports, two USB 2.0 ports, and a headphone mini jack right up front — where it’s more convenient to connect storage, multimedia devices, and high-speed peripherals.  Features 
• The “Nehalem” advantage.Many quad-core processors are composed of two separate dies, which means some cached data has to travel outside the processor to get from core to core. That’s an inefficient way to access information. Enter the Quad-Core Intel Xeon “Nehalem” processor. Its single-die, 64-bit architecture makes 8MB of fully shared L3 cache readily available to each of the four processor cores. The result is fast access to cache data and greater application performance. Combine that with the other technological advances and you get a Mac Pro that’s up to 1.9x faster than the previous generation. • Memory bottlenecks begone
• Power when (and where) you need it
The new Mac Pro introduces Turbo Boost: a dynamic performance technology that automatically boosts the processor clock speed based on workload. If you’re using an application that doesn’t need every core, Turbo Boost shuts off the speed of the active ones, up to 3.33GHz on an 8-core Mac Pro and 3.6GHz on a quad-core Mac Pro. • The virtue of virtual cores The new Intel Xeon “Nehalem” processors support Hyper-Threading, which allows two threads to run simultaneously on each core. So an 8-core Mac Pro presents 16 virtual cores that are recognised by Mac OS X. Performance is enhanced because Hyper-Threading enables the processor to take better advantage of the execution resources available in each core.
• Path of least resistance
A new bidirectional, point-to-point connection — called QuickPath Interconnect — gives the Intel Xeon “Nehalem” processor quick access to the disk, I/O, and other Mac Pro subsystems. In the new 8-core Mac Pro, there’s a QuickPath Interconnect between the two quad-core processors as well. This connection acts as a direct pipeline, so processor-to-processor data doesn’t need to travel to the I/O hub first. It’s another way the new Mac Pro boosts performance across the board. • Powerfully efficient Based on an industry-leading 45-nm process technology and combined with improved power management capabilities, the new Intel Xeon “Nehalem” processors are more energy efficient than before. So the Mac Pro is faster than ever, while using less energy when idle.
Environment
• Many harmful toxins eliminated Apple has worked hard to eliminate many of the toxins that are a common part of computer manufacturing. Apple engineers removed brominated flame retardants (BFRs) and polyvinyl chloride (PVC) from circuit boards, internal cables, connectors, insulators, adhesives, and more. Apple has removed these toxins from all new Mac Pro systems and all of its configuration options (including graphics cards, Fibre Channel cards, and RAID cards). We’ve done the same for the aluminium-based MacBook family; our new Mac mini and iMac systems; and the Apple LED Cinema Display, iPod touch, iPod classic, iPod nano, and iPhone 3G. • Highly recyclable 
The new Mac Pro is built with a recyclable aluminium enclosure. Aluminum is very desirable to recyclers, which means the raw materials used in the new Mac Pro can be reused in other products. We also simplified the internal design, replacing over 6 feet of cables with more material efficient connectors that allow easy disassembly at end of life. In addition, one of the few remaining plastic assemblies in the Mac Pro is made from postconsumer recycled plastic.
Even though the Mac Pro is the fastest Mac ever, nearly 2x faster than before,it is also more energy efficient. The energy-efficient hardware components in the Mac Pro work hand in hand with Mac OS X to create a system that can dynamically adjust power consumption to reduce the overall energy used. For instance, the CPU architecture allows individual cores to go into a low-power state to reduce energy consumption when they are not needed. The graphics card does the same, reducing power draw when not running graphics-intensive applications. The result is a smarter and more energy-efficient system that is not only as fast as possible when you need it, but also throttles down power use when it’s not needed. Compared with the previous-generation Mac Pro, the power used when the system is idle has been reduced by 15 percent.The Mac Pro meets the stringent power requirements set by the EPA, earning ENERGY STAR certification. In addition, it meets the latest efficiency requirements of ENERGY STAR Version 5.0 Specification for Computers before its July 2009 effective date. ENERGY STAR 5.0 sets significantly higher efficiency limits for power supplies as well as aggressive limits for the computer’s typical annual power consumption. 
Because the Mac Pro is environmentally innovative, it has earned the highest rating of EPEAT Gold. The Electronic Product Environmental Assessment Tool, or EPEAT, evaluates the environmental impact of a product based on how recyclable it is, how much energy it uses, and how it’s designed and manufactured.
• A commitment that starts with products
When it comes to being environmentally friendly, Apple approaches the challenge differently — through products like the new Mac Pro. Unlike other companies, Apple controls every aspect of the production of its computers. So Apple designers and engineers can minimise their carbon footprint in ways others can’t. They design them with fewer parts and eliminate many harmful toxins. They build them using recyclable materials. They even create software that makes them more energy efficient. The result is a new standard in green design.
Technical Specifications Processing ~Intel Xeon~
Graphics and displays Double-wide, 16-lane PCI Express 2.0 graphics slot with one of the following graphics cards installed:
Communications ~Airport~ 
Storage Four 3.5-inch cable-free, direct-attach hard drive bays with built-in independent 3Gb/s Serial ATA channels; four internal hard drive carriers included  Up to 8TB of internal storage3 in hard drive bays 1 through 4 using hard drives in the following capacities:
- Writes DVD+R DL and DVD-R DL discs at up to 8x speed - Writes DVD+RW discs at up to 8x speed - Writes DVD-RW discs at up to 6x speed - Reads DVDs at up to 18x speed - Writes CD-R and CD-RW discs at up to 32x speed - Reads CDs at up to 32x speed
Electrical and operating requirements
Connections and audio ~Mac Pro Ports~
PCI Express expansion
- Two PCI Express 2.0 x4 slots
Software 
~Mac OS X Leopard & iLife~
Size and weight
- Quad-core: 39.9 pounds (18.1 kg) 
In the box
Configuration Options
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Four FireWire 800 ports (two on front panel, two on back panel)