Intel Linux Power Idle Intel Core i7-4770K testing with a ECS Z87H3-A2X EXTREME v1.0 and Intel HD 4600 on Ubuntu 14.04 via the Phoronix Test Suite. Linux 3.9: Processor: Intel Core i7-4770K @ 3.50GHz (8 Cores), Motherboard: ECS Z87H3-A2X EXTREME v1.0, Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 150GB Western Digital WD1500HLHX-0 + 240GB OCZ VERTEX3, Graphics: Intel HD 4600 (1250MHz), Audio: Intel Haswell HDMI, Network: Realtek RTL8111/8168/8411 OS: Ubuntu 14.04, Kernel: 3.9.0-030900-generic (x86_64), Desktop: Unity 7.1.2, Display Server: X Server 1.14.4, Display Driver: intel 2.99.904, OpenGL: 3.3 Mesa 10.0.0, Compiler: GCC 4.8, File-System: ext4, Screen Resolution: 1920x1080 Linux 3.12: Processor: Intel Core i7-4770K @ 4.40GHz (8 Cores), Motherboard: ECS Z87H3-A2X EXTREME v1.0, Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 150GB Western Digital WD1500HLHX-0 + 240GB OCZ VERTEX3, Graphics: Intel HD 4600 (1250MHz), Audio: Intel Haswell HDMI, Network: Realtek RTL8111/8168/8411 OS: Ubuntu 14.04, Kernel: 3.12.0-031200-generic (x86_64), Desktop: Unity 7.1.2, Display Server: X Server 1.14.4, Display Driver: intel 2.99.904, OpenGL: 3.3 Mesa 10.0.0, Compiler: GCC 4.8, File-System: ext4, Screen Resolution: 1920x1080 Linux 3.13 Git: Processor: Intel Core i7-4770K @ 4.40GHz (8 Cores), Motherboard: ECS Z87H3-A2X EXTREME v1.0, Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 150GB Western Digital WD1500HLHX-0 + 240GB OCZ VERTEX3, Graphics: Intel HD 4600 (1250MHz), Audio: Intel Haswell HDMI, Network: Realtek RTL8111/8168/8411 OS: Ubuntu 14.04, Kernel: 3.13.0-999-generic (x86_64), Desktop: Unity 7.1.2, Display Server: X Server 1.14.4, Display Driver: intel 2.99.904, OpenGL: 3.3 Mesa 10.0.0, Compiler: GCC 4.8, File-System: ext4, Screen Resolution: 1920x1080 Timed Idle System Power Consumption Monitor Watts < Lower Is Better Linux 3.9 ...... MIN: 53.4 AVG: 53.5 MAX: 53.9 Linux 3.12 ..... MIN: 53.6 AVG: 53.8 MAX: 54.3 Linux 3.13 Git . MIN: 53.3 AVG: 54.9 MAX: 67.5