Hard Drive: If you’re involved with graphics-intensive activities that require a lot of storage space, or if you’re a pack rat who likes to store huge amounts of photos, videos and music, the Mac Pro will give you all you can handle with its 640GB Serial ATA (3GB/s) hard disk drive. And with its 7200 rpm option, you can access those large files quickly.
Processor: There are a couple of processor options for this beast called the Mac Pro. The first is a 2.66GHz Quad Core Intel Xeon processor and the other is an 8-core that contains two 2.26GHz Quad Core Intel Xeon processors. These processor speeds have more than enough muscle to flex their way through anything you throw at them. So if you like to juggle as many programs as you want, you won’t have a problem with the Mac Pro.
Graphics: If you’re a professional designer or an enthusiast who is looking for a desktop with an exceptional graphics performance, you will surely lust over the Mac Pro. The Mac Pro comes with the NVIDIA GeForce GT 120 with 512MB of GDDR3 memory. You can also choose to upgrade to the ATI Redeon HD 4870 with 512MB of GGDR5 memory if you’re into more demanding applications.
Memory: The performance of your Mac Pro in running applications, programs and games highly depends on its RAM. The higher the memory, the more programs you can run at the same time. Mac Pro comes with 3GB (three 1GB DIMMs) of 1066MHz DDR3 ECC SDRAM for the Quad-Core version and 6GB (six 1GB DIMMs) of 1066MHz DDR3 ECC SDRAM for the 8-core. With these massive amounts of storage space, expect all your intensive programs, applications and games to run without any hiccups.
 1066MHz DDR3 SDRAM DIMM Unbuffered ECC Memory Module - With Thermal SensorDIMM Memory.jpg)