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Technical Specifications
Hardware
Processor
• Single or dual 2GHz PowerPC G5 processors
• 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 execution architecture 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
• Two integer units
• Advanced three-component branch prediction logic
• 64-bit,1GHz DDR frontside bus per processor, each supporting up to 8GB/s data
throughput
• Point-to-point system controller with support for ECC memory
Memory
• 128-bit data paths for up to 6.4GB/s memory throughput
• 512MB or1GB of PC3200 (400MHz) DDR SDRAM
• Data protection using Error Correction Code (ECC) logic
• Eight slots supporting up to 8GB of DDR SDRAM using the following DIMMs (in pairs):
–256MB DIMMs (128-bit-wide, 128- or 256-Mbit technology)
–512MB DIMMs (64-bit-wide, 256-Mbit technology)
–1GB DIMMs (64-bit-wide, 256-Mbit technology)
I/O connections
• Two open11-inch, 64-bit PCI-X slots, running at up to133MHz with one card installed
or up to100MHz with two cards installed; support for 32-bit or 64-bit 3.3V Universal
PCI cards running at 33MHz or 66MHz
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• Two independent 10/100/1000BASE-T (Gigabit) RJ-45 Ethernet interfaces on the main
logic board
• Two 1.2MHz HyperTransport interconnects with the following throughput:
–Up to 4.8GB/s (2.4GB/s each way) between system controller and PCI-X
–Up to1.6GB/s (800MB/s each way) between system controller and I/O controller
• Two FireWire 800 ports on back panel and one FireWire 400 port on front panel;
15W total power
• Two USB 2.0 ports (480Mb/s each)
• One DB-9 serial port (RS-232)
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Technology Overview
Xserve G5