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System Memory - Mainboard & GPU

• 512 MB of Unified GDDR3 RAM
  • Unified Memory Architecture
  • Reduces cost and complexity of the motherboard design
• 700 MHz DDR
  • Effective transmission rate of 1.4 GHz on the 128-bit bus
• Unified Memory Architecture (GPU & CPU Access)
  • GPU 10MB eDRAM
• 128-bit interface to ATI’s memory controller

Memory Bandwidth

• 32 GB/s GPU to eDRAM bandwidth
  • 2 GHz @ 2 accesses per clock cycle on a 64 bit DDR bus
• 22.4 GB/s memory interface bus bandwidth (low latency path to CPU cores)
  • 700 MHz @ 2 accesses per clock cycle (one per edge) on a 128 bit bus
• 256 GB/s memory bandwidth to eDRAM
• 21.6 GB/s front-side bus
• Southbridge bandwidth of 500 MB/s.

Category:Xbox360_Hardware