X265 AMD Ryzen 5 3600X 6-Core testing with a ASRock X470 Gaming-ITX/ac (P4.10 BIOS) and ASUS AMD Radeon RX 470/480/570/570X/580/580X/590 4GB on Ubuntu 20.04 via the Phoronix Test Suite. AMD Ryzen 5 3600X 6-Core: Processor: AMD Ryzen 5 3600X 6-Core @ 3.80GHz (6 Cores / 12 Threads), Motherboard: ASRock X470 Gaming-ITX/ac (P4.10 BIOS), Chipset: AMD Starship/Matisse, Memory: 16GB, Disk: 256GB ADATA SX8200PNP + 8002GB Seagate ST8000VX0022-2EJ, Graphics: ASUS AMD Radeon RX 470/480/570/570X/580/580X/590 4GB (1360/1750MHz), Audio: AMD Ellesmere HDMI Audio, Monitor: DELL P2415Q, Network: Intel I211 + Intel-AC 9260 OS: Ubuntu 20.04, Kernel: 5.8.0-48-generic (x86_64), Desktop: GNOME Shell 3.36.7, Display Server: X Server 1.20.9, OpenGL: 4.6 Mesa 21.1.0-devel (git-7892b18 2021-03-24 focal-oibaf-ppa) (LLVM 12.0.0), Vulkan: 1.2.168, Compiler: GCC 9.3.0, File-System: zfs, Screen Resolution: 5120x2880 x265 3.4 Video Input: Bosphorus 4K Frames Per Second > Higher Is Better AMD Ryzen 5 3600X 6-Core . 10.55 |============================================= x265 3.4 Video Input: Bosphorus 1080p Frames Per Second > Higher Is Better AMD Ryzen 5 3600X 6-Core . 45.88 |=============================================