Mine

atk0110-acpi-0
Adapter: ACPI interface
Vcore Voltage:       +1.19 V  (min =  +0.85 V, max =  +1.60 V)
 +3.3 Voltage:       +3.50 V  (min =  +2.97 V, max =  +3.63 V)
 +5 Voltage:         +5.00 V  (min =  +4.50 V, max =  +5.50 V)
 +12 Voltage:       +12.62 V  (min = +10.20 V, max = +13.80 V)
CPU FAN Speed:      1618 RPM  (min =  600 RPM)
CHASSIS FAN Speed:  1182 RPM  (min =  600 RPM)
CHASSIS FAN 2 Speed:1695 RPM  (min =  600 RPM)
CPU Temperature:     +34.0 C  (high = +60.0 C, crit = +95.0 C)  
MB Temperature:      +26.0 C  (high = +45.0 C, crit = +75.0 C)  

Linux localhost 2.6.36-gentoo-r8 #1 SMP Mon Apr 4 22:12:16 CEST 2011 i686 
AMD Athlon(tm) 7750 Dual-Core Processor AuthenticAMD GNU/Linux
powernow-k8: Found 1 AMD Athlon(tm) 7750 Dual-Core Processor (2 cpu cores) (version 2.20.00)
powernow-k8:    0 : pstate 0 (2700 MHz)
powernow-k8:    1 : pstate 1 (1350 MHz)

mylocalhost willie # lscpu | grep MHz
CPU MHz:               1350.000
mylocalhost willie #