4800mhz Intel Core i7-2600K testing with a ASRock Z68 Extreme7 Gen3 and Intel HD 3000 on Ubuntu 14.04 via the Phoronix Test Suite. 4800mhz: Processor: Intel Core i7-2600K @ 5.90GHz (8 Cores), Motherboard: ASRock Z68 Extreme7 Gen3, Chipset: Intel 2nd Generation Core Family DRAM, Memory: 24576MB, Disk: 120GB KINGSTON SV300S3 + 1500GB Western Digital WD15EARS-00Z, Graphics: Intel HD 3000 (1350MHz), Audio: Intel 6 /C200, Network: Broadcom NetLink BCM57781 Gigabit PCIe OS: Ubuntu 14.04, Kernel: 3.16.0-77-generic (i686), Desktop: Unity 7.2.6, Display Server: X Server 1.16.0, Display Driver: intel 2.99.914, OpenGL: 3.1 Mesa 10.3.2, Compiler: GCC 4.8, File-System: ext4, Screen Resolution: 1920x1080 PostMark 1.51 Disk Transaction Performance TPS > Higher Is Better 4800mhz . 485 |================================================================ RAMspeed SMP 3.5.0 Type: Average - Benchmark: Integer MB/s > Higher Is Better 4800mhz . 7372.19 |============================================================ RAMspeed SMP 3.5.0 Type: Average - Benchmark: Floating Point MB/s > Higher Is Better 4800mhz . 7485.78 |============================================================ C-Ray 1.1 Total Time Seconds < Lower Is Better 4800mhz . 53.80 |============================================================== Apache Benchmark 2.4.7 Static Web Page Serving Requests Per Second > Higher Is Better 4800mhz . 25386.37 |===========================================================