System z196 uses multi-chip modules (MCMs) which allows for six z196 chips to be on a single module. Each MCM has two shared cache chips allowing processors on the MCM to be connected with 40 GB/s links. The different models of the zEnterprise System have a different number of active cores. To accomplish this, some processors in each MCM may have its fourth core disabled. z114 The zEnterprise System z114 does use z196 processors but does not use MCMs so the processors are packaged on single chip modules (SCM) instead. Two SCMs and one Shared Cache chip is mounted together in a processor drawer. These processors also run at reduced speed, at 3.8 GHz. References External links IBM zEnterprise System Technical Introduction - IBM.com IBM zEnterprise System Technical Guide - IBM.com IBM z196 Mainframe Architecture at Real World Technologies z196 z196 Computer-related introductions in 2010