The Mac Pro "Quad Core" 3.2 (Mid-2010/Nehalem), is a "custom-order" configuration of the Mac Pro "Quad Core" 2.8 (Mid-2010/Nehalem). Apart from processor, these models are identical.
The Mac Pro "Quad Core" 3.2 (Mid-2010/Nehalem) features a single 3.2 GHz Quad Core 45-nm Xeon W3565 (Nehalem) processor with a dedicated 256k of L2 cache for each core and 8MB of "fully shared" L3 cache.
By default, it is configured with 3GB of 1066 MHz DDR3 ECC SDRAM, a 1TB (7200 RPM, 32 MB cache) 3Gb/s Serial ATA hard drive, an 18X dual-layer "SuperDrive" and an ATI Radeon HD 5770 graphics card with 1GB of GDDR5 memory.
Expansion includes two external 5.25" "optical" bays (one available by default), four internal 3.5" "cable-free, direct attach" hard drive bays (three available by default), and four PCIe 2.0 slots (one free PCIe 2.0 x16 slot and two free PCIe 2.0 x4 slots with the default single graphics card installed).
Port selection includes five USB 2.0 ports, four Firewire "800" ports, dual Gigabit Ethernet, two Mini DisplayPorts and a dual-link DVI port, and more. AirPort Extreme (802.11a/b/g/n) and Bluetooth 2.1+EDR comes standard.
While the "Mid-2010" models share virtually identical external appearance as the "Early 2009" models, all "Mid-2010" models are equipped with faster graphics and notable technical enhancements exist for the higher-end "Westmere" models too with faster processors and as many as twelve cores (two six core processors) via custom configuration.