Processors:

• 8-core: Two 2.26GHz, 2.66GHz, or 2.93GHz Quad-Core Intel Xeon 5500 series processors Quad-core: One 2.66GHz or 2.93GHz Quad-Core Intel Xeon 3500 series processor.

Memory:

• 1066MHz DDR3 ECC SDRAM .

• 8-core: Eight memory slots (four per processor) supporting up to 32GB of main memory using 1GB, 2GB, or 4GB DIMMs.

• Quad-core: Four memory slots supporting up to 8GB of main memory using 1GB or 2GB DIMMs.

Graphics:

• ATI Radeon HD 4870 with 512MB of GDDR5 memory, PCI Express 2.0, one Mini DisplayPort, and one dual-link DVI port.

• NVIDIA GeForce GT 120 with 512MB of GDDR3 memory, PCI Express 2.0, one Mini DisplayPort, and one dual-link DVI port.

Communications:

• Two independent 10/100/1000BASE-T Ethernet (RJ-45) interfaces with support for jumbo frames.

• Bluetooth 2.1 + Enhanced Data Rate (EDR).

• Optional AirPort Extreme Wi-Fi card with 802.11n2 (based on an IEEE 802.11n draft specification); IEEE 802.11a/b/g compatible.

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 4TB of internal storage³ in hard drive bays 1 through 4 using hard drives in the following capacities:

Processors:

• 8-core: Two 2.26GHz, 2.66GHz, or 2.93GHz Quad-Core Intel Xeon 5500 series processors Quad-core: One 2.66GHz or 2.93GHz Quad-Core Intel Xeon 3500 series processor.

Memory:

• 1066MHz DDR3 ECC SDRAM .

• 8-core: Eight memory slots (four per processor) supporting up to 32GB of main memory using 1GB, 2GB, or 4GB DIMMs.

• Quad-core: Four memory slots supporting up to 8GB of main memory using 1GB or 2GB DIMMs.

Graphics:

• ATI Radeon HD 4870 with 512MB of GDDR5 memory, PCI Express 2.0, one Mini DisplayPort, and one dual-link DVI port.

• NVIDIA GeForce GT 120 with 512MB of GDDR3 memory, PCI Express 2.0, one Mini DisplayPort, and one dual-link DVI port.

Communications:

• Two independent 10/100/1000BASE-T Ethernet (RJ-45) interfaces with support for jumbo frames.

• Bluetooth 2.1 + Enhanced Data Rate (EDR).

• Optional AirPort Extreme Wi-Fi card with 802.11n2 (based on an IEEE 802.11n draft specification); IEEE 802.11a/b/g compatible.

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 4TB of internal storage³ in hard drive bays 1 through 4 using hard drives in the following capacities: