OpenCL Benchmarking Radeon vs. Intel Skylake
Intel Core i5-6600K tests with Beignet compared to some open-source Radeon dGPU results.


Radeon HD 6870: 

	Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Xeon E7 v3/Xeon, Memory: 16384MB, Disk: 2 x 120GB SanDisk SDSSDA12 + 120GB Samsung SSD 850, Graphics: Sapphire AMD Radeon HD 6870 1024MB, Audio: Realtek ALC1150, Monitor: DELL P2415Q, Network: Intel Connection

	OS: Ubuntu 15.10, Kernel: 4.5.0-rc2amdgpu-pp+ (x86_64) 20160201, Desktop: Unity, Display Server: X Server 1.17.2, Display Driver: radeon 7.6.99, OpenGL: 3.3 Mesa 11.2.0-devel (padoka PPA) Gallium 0.4, Compiler: GCC 5.2.1 20151010, File-System: ext4, Screen Resolution: 3840x2160

Radeon HD 6950: 

	Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Xeon E7 v3/Xeon, Memory: 16384MB, Disk: 2 x 120GB SanDisk SDSSDA12 + 120GB Samsung SSD 850, Graphics: Sapphire AMD Radeon HD 6950 2048MB, Audio: Realtek ALC1150, Monitor: DELL P2415Q, Network: Intel Connection

	OS: Ubuntu 15.10, Kernel: 4.5.0-rc2amdgpu-pp+ (x86_64) 20160201, Desktop: Unity, Display Server: X Server 1.17.2, Display Driver: radeon 7.6.99, OpenGL: 4.1 Mesa 11.2.0-devel (padoka PPA) Gallium 0.4, Compiler: GCC 5.2.1 20151010, File-System: ext4, Screen Resolution: 3840x2160

Radeon HD 7950: 

	Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Xeon E7 v3/Xeon, Memory: 16384MB, Disk: 2 x 120GB SanDisk SDSSDA12 + 120GB Samsung SSD 850, Graphics: XFX AMD Radeon HD 7950/8950 OEM / R9 280 3072MB, Audio: Realtek ALC1150, Monitor: DELL P2415Q, Network: Intel Connection

	OS: Ubuntu 15.10, Kernel: 4.5.0-rc2amdgpu-pp+ (x86_64) 20160201, Desktop: Unity, Display Server: X Server 1.17.2, Display Driver: radeon 7.6.99, OpenGL: 4.1 Mesa 11.2.0-devel (padoka PPA) Gallium 0.4, Compiler: GCC 5.2.1 20151010, File-System: ext4, Screen Resolution: 3840x2160

Radeon R9 285: 

	Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Xeon E7 v3/Xeon, Memory: 16384MB, Disk: 2 x 120GB SanDisk SDSSDA12 + 120GB Samsung SSD 850, Graphics: XFX AMD Radeon R9 285/380 2048MB, Audio: Realtek ALC1150, Monitor: DELL P2415Q, Network: Intel Connection

	OS: Ubuntu 15.10, Kernel: 4.5.0-rc2amdgpu-pp+ (x86_64) 20160201, Desktop: Unity, Display Server: X Server 1.17.2, Display Driver: amdgpu 1.0.99, OpenGL: 4.1 Mesa 11.2.0-devel (padoka PPA) Gallium 0.4, Compiler: GCC 5.2.1 20151010, File-System: ext4, Screen Resolution: 3840x2160

Radeon R9 290: 

	Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Xeon E7 v3/Xeon, Memory: 16384MB, Disk: 2 x 120GB SanDisk SDSSDA12 + 120GB Samsung SSD 850, Graphics: XFX AMD Radeon R9 290 4096MB, Audio: Realtek ALC1150, Monitor: DELL P2415Q, Network: Intel Connection

	OS: Ubuntu 15.10, Kernel: 4.5.0-rc2amdgpu-pp+ (x86_64) 20160201, Desktop: Unity, Display Server: X Server 1.17.2, Display Driver: radeon 7.6.99, OpenGL: 4.1 Mesa 11.2.0-devel (padoka PPA) Gallium 0.4, Compiler: GCC 5.2.1 20151010, File-System: ext4, Screen Resolution: 3840x2160

Radeon R7 370: 

	Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Xeon E7 v3/Xeon, Memory: 16384MB, Disk: 2 x 120GB SanDisk SDSSDA12 + 120GB Samsung SSD 850, Graphics: MSI AMD Radeon R7 370 / R9 270/370 OEM 4096MB, Audio: Realtek ALC1150, Monitor: DELL P2415Q, Network: Intel Connection

	OS: Ubuntu 15.10, Kernel: 4.5.0-rc2amdgpu-pp+ (x86_64) 20160201, Desktop: Unity, Display Server: X Server 1.17.2, Display Driver: radeon 7.6.99, OpenGL: 4.1 Mesa 11.2.0-devel (padoka PPA) Gallium 0.4, Compiler: GCC 5.2.1 20151010, File-System: ext4, Screen Resolution: 3840x2160

Core i5 6600K SKL: 

	Processor: Intel Core i5-6600K @ 3.90GHz (4 Cores), Motherboard: MSI Z170A GAMING PRO (MS-7984) v1.0, Chipset: Intel Sky Lake, Memory: 15360MB, Disk: 256GB TS256GSSD370S, Graphics: Intel Sky Lake (1150MHz), Audio: Realtek ALC1150, Monitor: DELL P2415Q, Network: Intel Connection

	OS: Ubuntu 15.10, Kernel: 4.5.0-999-generic (x86_64) 20160218, Desktop: Unity, Display Server: X Server 1.17.2, Display Driver: intel 2.99.917, OpenGL: 3.3 Mesa 11.2.0-devel (padoka PPA), Compiler: GCC 5.2.1 20151010 + Clang 3.7.1-1ubuntu3~gd~w + LLVM 3.7.1, File-System: ext4, Screen Resolution: 3840x2160


clpeak
OpenCL Test: Integer Compute INT
GIOPS > Higher Is Better
Radeon HD 6870 . 182.44  |======
Radeon HD 7950 . 491.62  |=================
Radeon R9 285 .. 650.80  |======================
Radeon R9 290 .. 1578.01 |=====================================================
Radeon R7 370 .. 418.74  |==============


clpeak
OpenCL Test: Transfer Bandwidth enqueueWriteBuffer
GBPS > Higher Is Better
Radeon HD 6870 .... 5.26  |==========
Radeon HD 7950 .... 15.72 |===============================
Radeon R9 285 ..... 14.82 |=============================
Radeon R9 290 ..... 12.32 |========================
Radeon R7 370 ..... 15.77 |===============================
Core i5 6600K SKL . 26.76 |====================================================


SHOC Scalable HeterOgeneous Computing 2015-11-10
Target: OpenCL - Benchmark: Bus Speed Download
GB/s > Higher Is Better
Radeon HD 7950 .... 10.21 |=====================
Radeon R9 285 ..... 10.14 |====================
Radeon R9 290 ..... 7.72  |================
Radeon R7 370 ..... 10.21 |=====================
Core i5 6600K SKL . 25.82 |====================================================


clpeak
OpenCL Test: Single-Precision Float
GFLOPS > Higher Is Better
Radeon HD 6870 .... 360.92  |====
Radeon HD 7950 .... 2345.12 |=========================
Radeon R9 285 ..... 3102.60 |==================================
Radeon R9 290 ..... 4608.55 |==================================================
Radeon R7 370 ..... 2031.91 |======================
Core i5 6600K SKL . 389.97  |====


SHOC Scalable HeterOgeneous Computing 2015-11-10
Target: OpenCL - Benchmark: Bus Speed Readback
GB/s > Higher Is Better
Radeon HD 7950 .... 5.59  |=========
Radeon R9 285 ..... 5.94  |=========
Radeon R9 290 ..... 3.02  |=====
Radeon R7 370 ..... 5.05  |========
Core i5 6600K SKL . 33.99 |====================================================


clpeak
OpenCL Test: Global Memory Bandwidth
GBPS > Higher Is Better
Core i5 6600K SKL . 31.55 |====================================================


clpeak
OpenCL Test: Transfer Bandwidth enqueueReadBuffer
GBPS > Higher Is Better
Radeon HD 6870 .... 3.58  |=============
Radeon HD 7950 .... 10.40 |======================================
Radeon R9 285 ..... 10.09 |=====================================
Radeon R9 290 ..... 9.82  |====================================
Radeon R7 370 ..... 10.41 |======================================
Core i5 6600K SKL . 14.17 |====================================================


clpeak
OpenCL Test: Double-Precision Double
GFLOPS > Higher Is Better
Radeon HD 7950 . 547.03 |==================================================
Radeon R9 285 .. 204.75 |===================
Radeon R9 290 .. 596.55 |======================================================
Radeon R7 370 .. 131.49 |============


clpeak
OpenCL Test: Kernel Latency
us > Higher Is Better
Radeon HD 6870 .... 145.85 |===================================================
Radeon HD 7950 .... 105.54 |=====================================
Radeon R9 285 ..... 143.39 |==================================================
Radeon R9 290 ..... 118.71 |==========================================
Radeon R7 370 ..... 110.24 |=======================================
Core i5 6600K SKL . 23.71  |========