• 1.8GHz, dual 1.8GHz, dual 2GHz, or dual 2.5GHz 64-bit PowerPC G5 microprocessors

• PowerPC processor architecture with 64-bit data paths and registers

• Native support for 32-bit application code

• 512K on-chip L2 cache running at processor speed

• Parallel data structure supporting up to 215 simultaneous in-flight instructions

• Simultaneous issue of up to 10 out-of-order operations

• Dual-pipeline Velocity Engine for 128-bit single-instruction, multiple-data

(SIMD) processing

• Two independent double-precision floating-point units

• Advanced three-component branch prediction logic

• 600MHz, 900MHz, 1GHz, or 1.25GHz 64-bit DDR frontside bus supporting up to

10-GBps data throughput; one on each processor

• Point-to-point system controller

• 128-bit data paths for up to 6.4-GBps memory throughput

• 1.8GHz and dual 1.8GHz systems:

– 256MB of PC3200 (400MHz) DDR SDRAM

– Four DIMM slots supporting up to 4GB of main memory

• Dual 2GHz and dual 2.5GHz systems:

– 512MB of PC3200 (400MHz) DDR SDRAM

– Eight DIMM slots supporting up to 8GB of main memory

• Support for the following DIMMs (in pairs):

– 128MB DIMMs (64-bit-wide, 128- or 256-Mbit)

– 256MB DIMMs (64-bit-wide, 128- or 256-Mbit)

– 512MB DIMMs (64-bit-wide, 256-Mbit)

– 1GB DIMMs (64-bit-wide, 256-Mbit)

• AGP 8X Pro graphics slot supporting up to 2-GBps data throughput, with one of

the following graphics cards installed:

– NVIDIA GeForce FX 5200 Ultra with 64MB of DDR SDRAM, DVI and ADC ports

– ATI Radeon 9600 XT with 128MB of DDR SDRAM, DVI and ADC ports

– ATI Radeon 9800 XT with 256MB of DDR SDRAM, DVI and ADC ports

(build-to-order option; occupies AGP slot and adjacent PCI slot)

– NVIDIA GeForce 6800 GT DDL with 256MB of GDDR3 SDRAM, two dual-link DVI

ports (build-to-order option; occupies AGP slot and adjacent PCI slot)

– NVIDIA GeForce 6800 Ultra DDL with 256MB of GDDR3 SDRAM, two dual-link DVI

ports (build-to-order option; occupies AGP slot and adjacent PCI slot)

• Support for digital resolutions up to 1920 by 1200 pixels

• Support for analog resolutions up to 1600 by 1200 pixels

• GeForce 6800 cards support up to 2560 by 1600 pixels

• DVI to VGA Adapter included

• Dual display support for extended desktop and video mirroring modes

• Support for up to two Apple flat-panel displays6

• Two 3.5-inch hard drive bays, each with a 150-MBps Serial ATA controller; one of the

following is installed:

– One 80GB 7200-rpm Serial ATA; 8MB memory buffers

– One 160GB 7200-rpm Serial ATA; 8MB memory buffers

– One or two 250GB 7200-rpm Serial ATA; 8MB memory buffers (build-to-order option)

• Optical drive bay with SuperDrive (DVD-R/CD-RW) installed; writes DVD-R discs at

up to 8x speed, reads DVDs at up to 10x speed, writes CD-R discs at up to 24x speed,

writes CD-RW discs at up to 10x speed, reads CDs at up to 32x speed

• 1.8GHz and dual 1.8GHz systems:

– Three open full-length 33MHz, 64-bit PCI slots

• Dual 2GHz and dual 2.5GHz systems:

– One open full-length 133MHz, 64-bit PCI-X slot and two open full-length 100MHz,

64-bit PCI-X slots

• 10/100/1000BASE-T Ethernet (RJ-45)

• Built-in 56K V.92 modem (RJ-11)9

• Expansion slot for optional 54-Mbps AirPort Extreme Card (based on IEEE 802.11g

standard; Wi-Fi Certified for 802.11g and 802.11b interoperability)4

• External AirPort Extreme antenna

• Optional Bluetooth 1.1 module and antenna

• One FireWire 800 port; two FireWire 400 ports (one on front panel; 15W total power)

• Three USB 2.0 ports (one on front panel); two USB 1.1 ports on keyboard

• Front headphone minijack and speaker

• Optical digital audio input and output Toslink connectors

• Stereo audio input and output minijacks