Mac Pro (Early 2009)

Essentials
Family: Mac Pro
Codename: ?
Gestalt ID: 406
Minimum OS: 10.5.6
Maximum OS: 10.7.3
Introduced: March 2009
Terminated: July 2010
Processor
CPU: Intel Xeon 5500 Series ("Galnestown")
CPU Speed: 2.66 GHz (3500-series "Bloomfield") or 2x2.26 GHz
CPU Cores: 4
FPU: integrated
Bus Speed: see notes
Register Width: 64-bit
Data Bus Width: 64-bit
Address Bus Width: 64-bit
ROM: EFI
RAM Type: PC-8500 DDR3 ECC SDRAM
Minimum RAM Speed: 1066 MHz
Onboard RAM: 0 MB
RAM slots: 4/8
Maximum RAM: 16/32 GB
Level 1 Cache: 32 kB data, 32 kB instruction
Level 2 Cache: 256 kB per-core (1 MB total)
Level 3 Cache: 8 MB on-processor
Expansion Slots: 1 PCI Express 2.0 x16 slot, 2 PCI Express 2.0 x4 slots
Video
GPU: NVIDIA GeForce GT 120 (16-lane double-wide PCI Express 2.0 slot)
VRAM: 512 MB
Max Resolution: all resolutions supported
Video Out: Mini DisplayPort, DVI (dual link)
Storage
Hard Drive: 640 GB 7200 RPM
ATA Bus: Serial-ATA
Optical Drive: 32x/32x/32x/18x/18x/8x CD-RW/DVD±RW/DVD±R DL
Input/Output
USB: 5 (2.0)
Firewire800: 4
Audio Out: 2x stereo 24 bit mini, Optical S/PDIF
Audio In: stereo 24 bit mini, Optical S/PDIF
Speaker: mono
Networking
Modem: optional external 56 kbps
Ethernet: 2x 10/100/1000Base-T
Airport Extreme: optional 802.11n
Bluetooth: 2.1+EDR
Miscellaneous
Power: 1440 Watts
Dimensions: 20.1" H x 8.1" W x 18.7" D
Weight: 39.9/41.2 lbs.

Notes
The Mac Pro (Early 2009) has no frontside bus, and as such there is no published bus speed. In its place, the Mac Pro uses Intel's QuickPath Interconnect system, a bi-directional, point-to-point connection system, which is functionally equivalent to a frontside bus operating at roughly 1:1 with the processor clock speed.
Introduced in March 2009, The Mac Pro (Early 2009) introduced Intel's Nehalem architecture to Apple's professional desktop line. Though the Intel Xeon 3500-series and 5500-series processors operated at lower clock rates than the 5400-series processors used in the Mac Pro (Early 2008), the system architecture provided more efficient caching and faster, point-to-point connections between the CPU and other system components, which resulted in a generally faster system, particularly for highly multi-threaded applications.
The Mac Pro (Early 2009) came in two highly-customizable configurations. The Quad-Core model included a 4-core 2.66 GHz Intel Xeon 3500-series processor, 3 GB of RAM, a 640 GB 7200 RPM hard drive, and 512 MB of VRAM, for $2499 (a 2.93 processor and up to 16 GB of RAM were available as Built-to-order options). The 8-core model included two 4-core 2.26 GHz Intel Xeon 5500-series processors, 6 GB of RAM, a 640 GB 7200 RPM hard drive, and 512 MB of VRAM, for $3299 (2.66 and 2.93 GHz processors and up to 32 GB of RAM were available as built-to-order options). Built-to-order options for both models included up to 4 TB of storage (via four hard drive bays), up to three additional NVIDIA GeForce GT 120 graphics cards, an ATI Radeon HD 4870 graphics card, a second 18x SuperDrive, and RAID and Fibre Channel PCI Express cards.
Picture Credits:
Apple, Inc.
