The Mac Pro "Quad Core" 2.66 (Early 2009/Nehalem) is powered by one 2.66 GHz Quad Core 45-nm Xeon W3520 (Nehalem) processor with a dedicated 256k of level 2 cache for each core and 8 MB of "fully shared" level 3 cache.
It is configured with 16 GB of DDR3 ECC SDRAM, an 1 TB (7200 RPM) Serial ATA hard drive, an 18X dual-layer "SuperDrive".
Expansion includes two external 5.25" "optical", four internal 3.5" "cable-free, direct attach" hard drive bays, and four PCIe 2.0 slots.
Ports include five USB 2.0 ports, four Firewire "800" ports, dual Gigabit Ethernet, and both a Mini DisplayPort and a dual-link DVI port, among others. Bluetooth 2.1+EDRis standard.
The 64-bit "Nehalem" architecture is supports "Hyper-Threading" -- which "allows two threads to run simultaneously on each core" and "Turbo Boost" -- which "automatically boosts the processor speed based on workload" (so if an application is only using one of the four cores it will automatically increase the speed of the core in use and turn off the unused cores).
Apple Mac Pro - 2.6GHz Quad Core Xeon, 16GB RAM, 1TB, DVDRW, OS X El Capitan (10.11)
Price: 399.97
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