The Xbox 360's North Bridge is integrated into the system's Xenos (GPU) and shares a memory controller with it.
- 128-bit GDDR3 Memory Controller @ 1.4GHz (22.4GB/s)
:*700 MHz 512MB Samsung GDDR3 RAM (8 chips, each 512Mbit by 16 bits)
- Shared System/Graphics memory
::*(5.6GB/s per chip)
- 500MB/s read/write (1GB/s total) SIS Southbridge interface (PCI express)