I am using the TM4C1294, so yeah the one with 80 pins. If there is a bug with SysCtlClockGet, how would I check to make sure that I am actually running at 120 MHz? Thanks for all the help. All of the control registers show that the processor should be running at 120 MHz, but for some reason the internal ADC is not sampling at the frequency I want it to, and I thought it had something to do with the processor clock frequency.