primus Testing primusrun vs optirun vs nvidia-prime primusrun: Processor: Intel Core i7-4810MQ @ 3.80GHz (8 Cores), Motherboard: Notebook W35xSS_370SS, Chipset: Intel Xeon E3-1200 v3/4th, Memory: 8192MB, Disk: 1000GB Seagate ST1000LM014-1EJ1 + 120GB KINGSTON SVP200S, Graphics: NVIDIA GeForce GTX 860M, Audio: Intel Haswell HDMI, Network: Realtek RTL8111/8168/8411 + Qualcomm Atheros AR9462 Wireless OS: Sabayon, Kernel: 3.14.0-sabayon (x86_64), Desktop: KDE 4.13.0, Display Server: X Server 1.14.6, Display Driver: intel 2.99.911, OpenGL: 4.4.0, Compiler: GCC 4.7.3 + Clang 3.3 + LLVM 3.3, File-System: ext4, Screen Resolution: 1920x1080 Unigine Heaven 4.0 1920 x 1080 Frames Per Second > Higher Is Better primusrun . 31.22 |============================================================ Unigine Sanctuary 2.3 1920 x 1080 Frames Per Second > Higher Is Better primusrun . 94.92 |============================================================ Unigine Tropics 1.3 1920 x 1080 Frames Per Second > Higher Is Better primusrun . 84.02 |============================================================ Unigine Valley 1.0 Resolution: 1920 x 1080 Frames Per Second > Higher Is Better primusrun . 31.43 |============================================================