cray 2 x Intel Xeon E5-2673 v3 testing with a INTEL X99 (5.11 BIOS) and Sapphire AMD Radeon HD 7770/8760 / R7 250X 1GB on Ubuntu 20.04 via the Phoronix Test Suite. x99dual: Processor: 2 x Intel Xeon E5-2673 v3 @ 3.10GHz (24 Cores / 48 Threads), Motherboard: INTEL X99 (5.11 BIOS), Chipset: Intel Xeon E7 v3/Xeon, Memory: 64GB, Disk: 128GB RPFTJ128PDD2EWX + 63GB Flash Disk, Graphics: Sapphire AMD Radeon HD 7770/8760 / R7 250X 1GB, Audio: Realtek ALC662 rev3, Monitor: HS233, Network: Realtek RTL8111/8168/8411 OS: Ubuntu 20.04, Kernel: 5.4.0-53-generic (x86_64), Desktop: GNOME Shell 3.36.4, Display Server: X Server 1.20.8, Display Driver: modesetting 1.20.8, OpenGL: 4.5 Mesa 20.0.8 (LLVM 10.0.0), Compiler: GCC 9.3.0, File-System: ext4, Screen Resolution: 1920x1080 C-Ray 1.1 Total Time - 4K, 16 Rays Per Pixel Seconds < Lower Is Better x99dual . 46.25 |==============================================================