Apple Power Mac G5 (Late 2005) - Manual (Page 31)

31 Technology Overview
Power Mac G5
Processing
• Single 2GHz, single 2.3GHz, or dual 2.5GHz dual-core PowerPC G5 microprocessors
• PowerPC processor architecture with 64-bit data paths and registers; each core
includes:
– 1MB on-chip L2 cache running at processor speed (total 2MB per processor)
– Parallel data structure supporting up to 215 simultaneous in-fl ight 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 fl oating-point units
– Advanced three-component branch prediction logic
• Native support for 32-bit application code
• Single 1GHz, single 1.15GHz, or dual 1.25GHz 64-bit DDR bidirectional frontside buses
• Point-to-point system controller
Memory
• 128-bit memory controller and data paths
– 512MB of 533MHz DDR2 SDRAM (PC2-4200)
– Eight DIMM slots supporting up to 16GB of main memory
• Support for the following DIMMs (in pairs):
– 256MB DIMMs (64-bit-wide, 512-Mbit)
– 512MB DIMMs (64-bit-wide, 512-Mbit)
– 1GB DIMMs (64-bit-wide, 512-Mbit or 1-Gbit)
– 2GB DIMMs (64-bit-wide, 1-Gbit)
• ECC memory available in confi gurations with 1GB or more (build-to-order option)
Graphics and displays
• 16-lane PCI Express graphics slot with one of the following graphics cards installed:
– NVIDIA GeForce 6600 LE with 128MB of GDDR SDRAM, one single-link DVI port, and
one dual-link DVI port
– NVIDIA GeForce 6600 with 256MB of GDDR SDRAM, one single-link DVI port, and
one dual-link DVI port
– NVIDIA GeForce 7800 GT with 256MB of GDDR3 SDRAM, one single-link DVI port,
and one dual-link DVI port (build-to-order option)
– NVIDIA Quadro FX 4500 with 512MB of GDDR3 SDRAM, two dual-link DVI ports, and
one stereo 3D port (build-to-order option; occupies 16-lane PCI Express slot and
adjacent PCI Express slot)
• Support for graphics cards that require up to 150W
• Support for digital resolutions up to 1920 by 1200 pixels; dual-link DVI ports support
up to 2560 by 1600 pixels
Technical Specifi cations