Ryzen 1700 @3.8 AMD Ryzen 7 1700 Eight-Core testing with a ASRock X370 Killer SLI and eVGA NVIDIA GeForce GTX 660 Ti 2048MB on Fedora 26 via the Phoronix Test Suite. GTX 660 TI: Processor: AMD Ryzen 7 1700 Eight-Core @ 3.79GHz (16 Cores), Motherboard: ASRock X370 Killer SLI, Chipset: AMD Family 17h, Memory: 16384MB, Disk: 128GB TS128GSSD360S + 250GB Samsung SSD 850 + 1000GB Western Digital WD10EADS-11M + 1000GB Western Digital WD10EZEX-00W + 256GB MTFDDAK256MAM-1K + 1000GB Expansion, Graphics: eVGA NVIDIA GeForce GTX 660 Ti 2048MB (1189/3004MHz), Audio: C-Media CMI8788, Network: Intel I211 Gigabit Connection OS: Fedora 26, Kernel: 4.13.4-200.fc26.x86_64 (x86_64), Desktop: GNOME Shell 3.24.3, Display Driver: NVIDIA 375.66, OpenGL: 4.5.0, Vulkan: 1.0.24, Compiler: GCC 7.2.1 20170915 + LLVM 4.0.1, File-System: ext4, Screen Resolution: 3840x1080 Darktable darktable-2.2.5-2.fc26 Test: Boat - Acceleration: OpenCL Seconds < Lower Is Better GTX 660 TI . 12.63 |=========================================================== Darktable darktable-2.2.5-2.fc26 Test: Boat - Acceleration: CPU-only Seconds < Lower Is Better GTX 660 TI . 15.85 |=========================================================== Darktable darktable-2.2.5-2.fc26 Test: Masskrug - Acceleration: OpenCL Seconds < Lower Is Better GTX 660 TI . 8.22 |============================================================ Darktable darktable-2.2.5-2.fc26 Test: Masskrug - Acceleration: CPU-only Seconds < Lower Is Better GTX 660 TI . 7.77 |============================================================ Darktable darktable-2.2.5-2.fc26 Test: Server Room - Acceleration: OpenCL Seconds < Lower Is Better GTX 660 TI . 5.03 |============================================================ Darktable darktable-2.2.5-2.fc26 Test: Server Room - Acceleration: CPU-only Seconds < Lower Is Better GTX 660 TI . 5.92 |============================================================