CONFIG_SYS_SUPPORTS_128HZ is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_SYS_SUPPORTS_128HZ (not configurable)

configname: CONFIG_SYS_SUPPORTS_128HZ

Linux Kernel Configuration
└─>Kernel type
└─>SYS_SUPPORTS_128HZ
In linux kernel since version 2.6.18 (release Date: 2006-09-19)  
is depended by
CONFIG_MACH_DECSTATION