Linux 3.1 Kernel Power
Intel Core i5-2520M testing with a HP 161C under Ubuntu 11.10 via the Phoronix Test Suite.


Linux 3.1: 

	Processor: Intel Core i5-2520M @ 2.50GHz (4 Cores), Motherboard: HP 161C, Chipset: Intel 2nd Generation Core Family, Memory: 4096MB, Disk: 160GB INTEL SSDSA2M160, Graphics: Intel 2nd Generation Core Family IGP, Audio: IDT 92HD81B1X5, Network: Intel 82579LM Gigabit + Intel Centrino Advanced-N 6205

	OS: Ubuntu 11.10, Kernel: 3.1.0-999-generic (x86_64), Desktop: Unity 4.8.2, Display Server: X Server 1.10.2.902 (1.10.3 RC 2), Display Driver: intel 2.15.901, Compiler: GCC 4.6.1, File-System: ext4, Screen Resolution: 1600x900

Linux 3.0: 

	Processor: Intel Core i5-2520M @ 2.50GHz (4 Cores), Motherboard: HP 161C, Chipset: Intel 2nd Generation Core Family, Memory: 4096MB, Disk: 160GB INTEL SSDSA2M160, Graphics: Intel 2nd Generation Core Family IGP, Audio: IDT 92HD81B1X5, Network: Intel 82579LM Gigabit + Intel Centrino Advanced-N 6205

	OS: Ubuntu 11.10, Kernel: 3.0.0-0300-generic (x86_64), Desktop: Unity 4.8.2, Display Server: X Server 1.10.2.902 (1.10.3 RC 2), Display Driver: intel 2.15.901, Compiler: GCC 4.6.1, File-System: ext4, Screen Resolution: 1600x900

Linux 2.6.39: 

	Processor: Intel Core i5-2520M @ 2.50GHz (4 Cores), Motherboard: HP 161C, Chipset: Intel 2nd Generation Core Family, Memory: 4096MB, Disk: 160GB INTEL SSDSA2M160, Graphics: Intel 2nd Generation Core Family IGP, Audio: IDT 92HD81B1X5, Network: Intel 82579LM Gigabit + Intel Centrino Advanced-N 6205

	OS: Ubuntu 11.10, Kernel: 2.6.39-020639-generic (x86_64), Desktop: Unity 4.8.2, Display Server: X Server 1.10.2.902 (1.10.3 RC 2), Display Driver: intel 2.15.901, Compiler: GCC 4.6.1, File-System: ext4, Screen Resolution: 1600x900

Linux 2.6.38: 

	Processor: Intel Core i5-2520M @ 2.50GHz (4 Cores), Motherboard: HP 161C, Chipset: Intel 2nd Generation Core Family, Memory: 4096MB, Disk: 160GB INTEL SSDSA2M160, Graphics: Intel 2nd Generation Core Family IGP, Audio: IDT 92HD81B1X5, Network: Intel 82579LM Gigabit + Intel Centrino Advanced-N 6205

	OS: Ubuntu 11.10, Kernel: 2.6.38-020638-generic (x86_64), Desktop: Unity 4.8.2, Display Server: X Server 1.10.2.902 (1.10.3 RC 2), Display Driver: intel 2.15.901, Compiler: GCC 4.6.1, File-System: ext4, Screen Resolution: 1600x900


Battery Power Usage
Idle, DPMS Off, Video Playback
Milliwatts
Linux 3.1 .... MIN: 19444  AVG: 22781  MAX: 27177 
Linux 3.0 .... MIN: 13954  AVG: 17293  MAX: 25414 
Linux 2.6.39 . MIN: 9911   AVG: 13968  MAX: 21392 
Linux 2.6.38 . MIN: 9212   AVG: 13197  MAX: 20988