BBfreq

Using bbtools code, bbfreq displays the current CPU speed with "dynamic" cpufrequency scheme.
Requires kernel support for speedstep-centrino:

CONFIG_X86_SPEEDSTEP_CENTRINO=m
CONFIG_X86_SPEEDSTEP_CENTRINO_TABLE=y
CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI=y

Download bbfreq

gkfreq displays the same information as a gkrellm plugin