Core i7 5960X Compilers GCC vs. LLVM Clang on the Intel Core i7 5960X Haswell-E platform with Ubuntu 14.10 Linux on the 3.16 kernel. GCC 4.9.1: Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Haswell-E DMI2, Memory: 16384MB, Disk: 128GB Crucial_CT128MX1, Graphics: Sapphire AMD Radeon HD 6870 1024MB, Audio: Intel Wellsburg HD Audio, Monitor: SyncMaster, Network: Intel Connection OS: Ubuntu 14.10, Kernel: 3.16.0-12-generic (x86_64), Desktop: Unity 7.3.1, Display Server: X Server 1.15.1, Display Driver: radeon 7.4.0, OpenGL: 3.3 Mesa 10.2.6 Gallium 0.4, Compiler: GCC 4.9.1, File-System: ext4, Screen Resolution: 2560x1600 LLVM Clang 3.5: Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Haswell-E DMI2, Memory: 16384MB, Disk: 128GB Crucial_CT128MX1, Graphics: Sapphire AMD Radeon HD 6870 1024MB, Audio: Intel Wellsburg HD Audio, Monitor: SyncMaster, Network: Intel Connection OS: Ubuntu 14.10, Kernel: 3.16.0-12-generic (x86_64), Desktop: Unity 7.3.1, Display Server: X Server 1.15.1, Display Driver: radeon 7.4.0, OpenGL: 3.3 Mesa 10.2.6 Gallium 0.4, Compiler: Clang 3.5.0-1ubuntu1, File-System: ext4, Screen Resolution: 2560x1600 i3 vs haswell e: Processor: Intel Core i3-4130 @ 3.40GHz (4 Cores), Motherboard: MSI H81I (MS-7851) v2.0, Chipset: Intel 4th Gen Core DRAM, Memory: 8192MB, Disk: 180GB INTEL SSDSC2CW18 + 60GB Corsair Force 3, Graphics: eVGA NVIDIA GeForce GTX 750 1024MB (540/2505MHz), Audio: Realtek ALC887-VD, Network: Realtek RTL8111/8168/8411 OS: LinuxMint 17, Kernel: 3.13.0-30-generic (x86_64), Desktop: Cinnamon 2.2.16, Display Server: X Server 1.15.1, OpenGL: 4.3.0, Compiler: GCC 4.8, File-System: ext4, Screen Resolution: 2560x1440 SciMark 2.0 Computational Test: Composite Mflops > Higher Is Better GCC 4.9.1 ....... 1226.25 |================================= LLVM Clang 3.5 .. 1922.22 |==================================================== i3 vs haswell e . 1141.77 |=============================== SciMark 2.0 Computational Test: Monte Carlo Mflops > Higher Is Better GCC 4.9.1 ....... 478.03 |================================================= LLVM Clang 3.5 .. 510.58 |===================================================== i3 vs haswell e . 513.28 |===================================================== SciMark 2.0 Computational Test: Fast Fourier Transform Mflops > Higher Is Better GCC 4.9.1 ....... 336.60 |=================================================== LLVM Clang 3.5 .. 351.38 |===================================================== i3 vs haswell e . 225.74 |================================== SciMark 2.0 Computational Test: Sparse Matrix Multiply Mflops > Higher Is Better GCC 4.9.1 ....... 2127.38 |============================================= LLVM Clang 3.5 .. 2474.85 |==================================================== i3 vs haswell e . 1917.71 |======================================== SciMark 2.0 Computational Test: Dense LU Matrix Factorization Mflops > Higher Is Better GCC 4.9.1 ....... 2256.78 |======================== LLVM Clang 3.5 .. 4889.54 |==================================================== i3 vs haswell e . 2038.67 |====================== SciMark 2.0 Computational Test: Jacobi Successive Over-Relaxation Mflops > Higher Is Better GCC 4.9.1 ....... 932.44 |=================================== LLVM Clang 3.5 .. 1384.75 |==================================================== i3 vs haswell e . 1012.66 |====================================== John The Ripper 1.8.0 Test: Blowfish Real C/S > Higher Is Better GCC 4.9.1 ....... 11473 |====================================================== LLVM Clang 3.5 .. 796 |==== i3 vs haswell e . 2602 |============ John The Ripper 1.8.0 Test: Traditional DES Real C/S > Higher Is Better GCC 4.9.1 ....... 17700000 |=================================================== LLVM Clang 3.5 .. 4547667 |============= i3 vs haswell e . 4079000 |============ John The Ripper 1.8.0 Test: MD5 Real C/S > Higher Is Better GCC 4.9.1 ....... 146966 |===================================================== LLVM Clang 3.5 .. 13244 |===== i3 vs haswell e . 34245 |============ x264 2014-08-30 H.264 Video Encoding Frames Per Second > Higher Is Better GCC 4.9.1 ....... 239.97 |===================================================== LLVM Clang 3.5 .. 237.37 |==================================================== i3 vs haswell e . 83.84 |=================== Himeno Benchmark 3.0 Poisson Pressure Solver MFLOPS > Higher Is Better GCC 4.9.1 ....... 1563.44 |==================================================== LLVM Clang 3.5 .. 1374.96 |============================================== i3 vs haswell e . 1520.78 |=================================================== Timed Apache Compilation 2.4.7 Time To Compile Seconds < Lower Is Better GCC 4.9.1 ....... 33.84 |==================================== LLVM Clang 3.5 .. 22.98 |======================== i3 vs haswell e . 50.66 |====================================================== Timed PHP Compilation 5.2.9 Time To Compile Seconds < Lower Is Better GCC 4.9.1 ....... 20.91 |===================== LLVM Clang 3.5 .. 18.59 |=================== i3 vs haswell e . 52.90 |====================================================== C-Ray 1.1 Total Time Seconds < Lower Is Better GCC 4.9.1 ....... 9.73 |========== LLVM Clang 3.5 .. 14.77 |=============== i3 vs haswell e . 53.38 |====================================================== Smallpt 1.0 Global Illumination Renderer; 100 Samples Seconds < Lower Is Better GCC 4.9.1 ....... 14 |==== LLVM Clang 3.5 .. 172 |================================================== i3 vs haswell e . 193 |======================================================== FLAC Audio Encoding 1.3.0 WAV To FLAC Seconds < Lower Is Better GCC 4.9.1 ....... 4.89 |================================================== LLVM Clang 3.5 .. 5.28 |====================================================== i3 vs haswell e . 5.36 |======================================================= LAME MP3 Encoding 3.99.3 WAV To MP3 Seconds < Lower Is Better GCC 4.9.1 ....... 14.38 |============================================ LLVM Clang 3.5 .. 17.45 |====================================================== i3 vs haswell e . 14.38 |============================================ Hierarchical INTegration 1.0 Test: FLOAT QUIPs > Higher Is Better GCC 4.9.1 ....... 253952490.31 |====================================== LLVM Clang 3.5 .. 205919869.28 |============================== i3 vs haswell e . 317863349.79 |=============================================== Apache Benchmark 2.4.7 Static Web Page Serving Requests Per Second > Higher Is Better GCC 4.9.1 ....... 17082.05 |====================================== LLVM Clang 3.5 .. 16917.89 |====================================== i3 vs haswell e . 22922.21 |===================================================