Unigine GTX 1080 Linux using primusrun to activate the 940mx in debian stretch with performance set to auto GeForce GTX 1080: Processor: Intel Xeon E3-1280 v5 @ 4.00GHz (8 Cores), Motherboard: MSI C236A WORKSTATION (MS-7998) v1.0, Chipset: Intel Sky Lake, Memory: 16384MB, Disk: Samsung SSD 950 PRO 256GB, Graphics: Device 8187MB (1607/5005MHz), Audio: Realtek ALC1150, Network: Intel Connection OS: Ubuntu 16.04, Kernel: 4.6.0-040600-generic (x86_64), Desktop: Unity 7.4.0, Display Server: X Server 1.18.3, Display Driver: NVIDIA 367.18, OpenGL: 4.5.0, OpenCL: OpenCL 1.2 CUDA 8.0.0, Vulkan: 1.0.8, Compiler: GCC 5.3.1 20160413, File-System: ext4, Screen Resolution: 3840x2160 940mx: Processor: Intel Core i7-6700HQ @ 3.50GHz (8 Cores), Motherboard: LENOVO 20FXS05500, Chipset: Intel Skylake, Memory: 16384MB, Disk: 1024GB SanDisk SD8SB8U1, Graphics: Intel HD 530 (1050MHz), Audio: Realtek ALC293, Network: Intel Connection + Intel Wireless 8260 OS: Debian testing, Kernel: 4.6.0-1-amd64 (x86_64), Desktop: GNOME Shell 3.20.3, Display Server: X Server 1.18.3, Display Driver: intel 2.99.917, OpenGL: 3.3 Mesa 11.2.2, Compiler: GCC 5.4.0 20160609, File-System: btrfs, Screen Resolution: 2560x1440 primusrun 940mx: Processor: Intel Core i7-6700HQ @ 3.50GHz (8 Cores), Motherboard: LENOVO 20FXS05500, Chipset: Intel Skylake, Memory: 16384MB, Disk: 1024GB SanDisk SD8SB8U1, Graphics: Intel HD 530 (1050MHz), Audio: Realtek ALC293, Network: Intel Connection + Intel Wireless 8260 OS: Debian testing, Kernel: 4.6.0-1-amd64 (x86_64), Desktop: GNOME Shell 3.20.3, Display Server: X Server 1.18.3, Display Driver: intel 2.99.917, OpenGL: 4.5.0, Compiler: GCC 5.4.0 20160609, File-System: btrfs, Screen Resolution: 2560x1440 Unigine Heaven 4.0 Resolution: 1920 x 1080 - Mode: Fullscreen Frames Per Second > Higher Is Better GeForce GTX 1080 . 157.44 |==================================================== 940mx ............ 8.39 |=== primusrun 940mx .. 8.37 |=== Unigine Valley 1.0 Resolution: 1920 x 1080 - Mode: Fullscreen Frames Per Second > Higher Is Better GeForce GTX 1080 . 127.91 |==================================================== 940mx ............ 7.67 |=== primusrun 940mx .. 7.59 |===