darktable1
Intel Core i7-4790K testing with a Gigabyte Z97X-UD3H-BK-CF (F8 BIOS) and Gigabyte AMD Intel Radeon RX Vega 8GB on Arch Linux via the Phoronix Test Suite.


1080ti: 

	Processor: Intel Core i7-4790K @ 4.40GHz (4 Cores / 8 Threads), Motherboard: Gigabyte Z97X-UD3H-BK-CF (F8 BIOS), Chipset: Intel 4th Gen Core DRAM, Memory: 32768MB, Disk: 500GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DM006-2DM1 + Samsung SSD 970 PRO 512GB, Graphics: Gigabyte NVIDIA GeForce GTX 1080 Ti 11GB (139/405MHz), Audio: Intel Xeon E3-1200 v3/4th, Monitor: 31MU97, Network: Intel Connection I217-V

	OS: Arch Linux, Kernel: 4.18.16-arch1-1-vfio (x86_64), Display Server: X Server 1.20.3, Display Driver: NVIDIA 415.18, Compiler: GCC 8.2.1 20181127, File-System: btrfs, Screen Resolution: 4096x2160

Vega64: 

	Processor: Intel Core i7-4790K @ 4.40GHz (4 Cores / 8 Threads), Motherboard: Gigabyte Z97X-UD3H-BK-CF (F8 BIOS), Chipset: Intel 4th Gen Core DRAM, Memory: 32768MB, Disk: 500GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DM006-2DM1 + Samsung SSD 970 PRO 512GB, Graphics: Gigabyte AMD Intel Radeon RX Vega 8GB (1250MHz), Audio: Intel Xeon E3-1200 v3/4th, Monitor: 31MU97, Network: Intel Connection I217-V

	OS: Arch Linux, Kernel: 4.18.16-arch1-1-vfio (x86_64), Display Server: X Server 1.20.3, Compiler: GCC 8.2.1 20181127, File-System: btrfs, Screen Resolution: 4096x2160

Vega64_opencl-mesa: 

	Processor: Intel Core i7-4790K @ 4.40GHz (4 Cores / 8 Threads), Motherboard: Gigabyte Z97X-UD3H-BK-CF (F8 BIOS), Chipset: Intel 4th Gen Core DRAM, Memory: 32768MB, Disk: 500GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DM006-2DM1 + Samsung SSD 970 PRO 512GB, Graphics: Gigabyte AMD Intel Radeon RX Vega 8GB (1250MHz), Audio: Intel Xeon E3-1200 v3/4th, Monitor: 31MU97, Network: Intel Connection I217-V

	OS: Arch Linux, Kernel: 4.18.16-arch1-1-vfio (x86_64), Display Server: X Server 1.20.3, Compiler: GCC 8.2.1 20181127 + Clang 7.0.0, File-System: btrfs, Screen Resolution: 4096x2160

Vega64_opencl-amd: 

	Processor: Intel Core i7-4790K @ 4.40GHz (4 Cores / 8 Threads), Motherboard: Gigabyte Z97X-UD3H-BK-CF (F8 BIOS), Chipset: Intel 4th Gen Core DRAM, Memory: 32768MB, Disk: 500GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DM006-2DM1 + Samsung SSD 970 PRO 512GB, Graphics: Gigabyte AMD Intel Radeon RX Vega 8GB (1250MHz), Audio: Intel Xeon E3-1200 v3/4th, Monitor: 31MU97, Network: Intel Connection I217-V

	OS: Arch Linux, Kernel: 4.18.16-arch1-1-vfio (x86_64), Display Server: X Server 1.20.3, OpenCL: OpenCL 2.1 AMD-APP (2671.3), Compiler: GCC 8.2.1 20181127 + Clang 7.0.0, File-System: btrfs, Screen Resolution: 4096x2160

i7-4790K: 

	Processor: Intel Core i7-4790K @ 4.40GHz (4 Cores / 8 Threads), Motherboard: Gigabyte Z97X-UD3H-BK-CF (F8 BIOS), Chipset: Intel 4th Gen Core DRAM, Memory: 32768MB, Disk: 500GB Samsung SSD 850 + 2 x 2000GB Seagate ST2000DM006-2DM1 + Samsung SSD 970 PRO 512GB, Graphics: Gigabyte AMD Intel Radeon RX Vega 8GB (1250MHz), Audio: Intel Xeon E3-1200 v3/4th, Monitor: 31MU97, Network: Intel Connection I217-V

	OS: Arch Linux, Kernel: 4.18.16-arch1-1-vfio (x86_64), Display Server: X Server 1.20.3, OpenCL: OpenCL 2.1 AMD-APP (2671.3), Compiler: GCC 8.2.1 20181127 + Clang 7.0.0, File-System: btrfs, Screen Resolution: 4096x2160


Darktable 2.4.4
Test: Boat - Acceleration: OpenCL
Seconds < Lower Is Better
1080ti ............. 2.85  |=======
Vega64 ............. 22.31 |===================================================
Vega64_opencl-mesa . 22.30 |===================================================
Vega64_opencl-amd .. 3.21  |=======


Darktable 2.4.4
Test: Masskrug - Acceleration: OpenCL
Seconds < Lower Is Better
1080ti ............. 6.79  |==================================
Vega64 ............. 10.24 |===================================================
Vega64_opencl-mesa . 10.25 |===================================================
Vega64_opencl-amd .. 6.66  |=================================


Darktable 2.4.4
Test: Server Rack - Acceleration: OpenCL
Seconds < Lower Is Better
1080ti ............. 0.14 |===========================
Vega64 ............. 0.27 |====================================================
Vega64_opencl-mesa . 0.27 |====================================================
Vega64_opencl-amd .. 0.14 |===========================


Darktable 2.4.4
Test: Server Room - Acceleration: OpenCL
Seconds < Lower Is Better
1080ti ............. 1.10 |=======
Vega64 ............. 7.63 |====================================================
Vega64_opencl-mesa . 7.62 |====================================================
Vega64_opencl-amd .. 0.88 |======


Darktable 2.4.4
Test: Boat - Acceleration: CPU-only
Seconds < Lower Is Better
i7-4790K . 22.57 |=============================================================


Darktable 2.4.4
Test: Masskrug - Acceleration: CPU-only
Seconds < Lower Is Better
i7-4790K . 10.35 |=============================================================


Darktable 2.4.4
Test: Server Rack - Acceleration: CPU-only
Seconds < Lower Is Better
i7-4790K . 0.28 |==============================================================


Darktable 2.4.4
Test: Server Room - Acceleration: CPU-only
Seconds < Lower Is Better
i7-4790K . 7.70 |==============================================================