User ID: lcct
Laptop Model: Acer Aspire 4540
Processor Model: Turion II M520 @ 2.3 GHz, 1800 MHz HT Link, 2x512KB L2 Cache, 45 nm, 35W TDP
Stable Undervolted Voltage:
P0 2300 MHz: 1.050V
P1 2100 MHz: 0.9875V
P2 1500 MHz: 0.875V
P3 1100 MHz: 0.800V
P4 800 MHz: 0.725V

Notes:
- Using K10stat, command line options used in startup folder: -lp:1 -StayOnTray -ClkCtrl:2 -nw
- Each of the p-state was tested stable using prime95
- Temperature drop at full load: ~7°C (65->58), at idle: 0°C (45)
- Battery life increase: 0% (idle) to 27% (full load)