Sorry, this field is new for me.
Do you mean this value?:
/** @addtogroup STM32F4xx_System_Private_Variables
…
*/
uint32_t SystemCoreClock = 16000000;
The board in question:
OLIMEX STM32-P405
STM32F405RG
Cortex-M4
32bit
168 Mhz
Should I replace 16.000.000 with 168.000.000?