121 and the graphics processor 190 the system bus 123 may be any of several types of bus structures including by way of example and not limitation such architectures include industry standard architecture isa bus micro channel architecture mca bus and enhanced isa eisa bus as system architectures evolve other bus architectures and chip sets may be used but often generally follow this pattern for example companies such as intel and amd support the intel hub architecture iha and the hypertransport u2122 architecture respectively the computer 110 typically includes a variety of computer readable media computer readable media can be any available media that can be accessed by computer 110 and includes both volatile and nonvolatile media removable and non removable media by way of example and not limitation computer readable media may comprise computer storage media and communication media computer storage media includes both volatile and nonvolatile removable and non removable media implemented in any method or technology for storage of information such as computer readable instructions data structures program modules or other data computer storage media includes but is not limited to ram rom eeprom flash memory or other memory technology cd rom digital versatile disks dvd or other optical disk storage magnetic cassettes magnetic tape magnetic disk storage or.