x3.4xlarge Xen HVM domU 4.2.amazon testing on Ubuntu 14.04 via the Phoronix Test Suite. c3.4xlarge: Processor: Intel Xeon E5-2680 v2 @ 2.80GHz (16 Cores), Motherboard: Xen HVM domU, Chipset: Intel 440FX- 82441FX PMC, Memory: 30720MB, Disk: 8GB, Graphics: Cirrus Logic GD 5446 OS: Ubuntu 14.04, Kernel: 3.13.0-36-generic (x86_64), Compiler: GCC 4.8, File-System: ext4, System Layer: Xen HVM domU 4.2.amazon SciMark 2.0 Computational Test: Composite Mflops > Higher Is Better c3.4xlarge . 1142.92 |========================================================= SciMark 2.0 Computational Test: Monte Carlo Mflops > Higher Is Better c3.4xlarge . 440.86 |========================================================== SciMark 2.0 Computational Test: Fast Fourier Transform Mflops > Higher Is Better c3.4xlarge . 366.47 |========================================================== SciMark 2.0 Computational Test: Sparse Matrix Multiply Mflops > Higher Is Better c3.4xlarge . 1973.75 |========================================================= SciMark 2.0 Computational Test: Dense LU Matrix Factorization Mflops > Higher Is Better c3.4xlarge . 1997.28 |========================================================= SciMark 2.0 Computational Test: Jacobi Successive Over-Relaxation Mflops > Higher Is Better c3.4xlarge . 936.26 |==========================================================