Cpu speed from cpuinfo 1728.00Mhz cpuinfo might be wrong if cpufreq is enabled. To guess correctly try estimating via tsc Linux's inbuilt cpu_khz code emulated now True Frequency (without accounting Turbo) 1728 MHz CPU Multiplier 13x || Bus clock frequency (BCLK) 132.92 MHz Socket [0] - [physical cores=4, logical cores=8, max online cores ever=4] TURBO ENABLED on 4 Cores, Hyper Threading ON Max Frequency without considering Turbo 1860.92 MHz (132.92 x [14]) Max TURBO Multiplier (if Enabled) with 1/2/3/4 Cores is 23x/21x/15x/15x Real Current Frequency 1728.08 MHz [132.92 x 13.00] (Max of below) Core [core-id] :Actual Freq (Mult.) C0% Halt(C1)% C3 % C6 % C7 % Core 1 [0]: 1728.00 (13.00x) 99.3 1 0 0 0 Core 2 [2]: 1728.00 (13.00x) 98.6 1.36 0 0 0 Core 3 [4]: 1728.06 (13.00x) 97.1 0.918 1 1 0 Core 4 [6]: 1728.08 (13.00x) 97.9 1.12 0 1 0 C0 = Processor running without halting C1 = Processor running with halts (States >C0 are power saver modes with cores idling) C3 = Cores running with PLL turned off and core cache turned off C6, C7 = Everything in C3 + core state saved to last level cache, C7 is deeper than C6 Above values in table are in percentage over the last 1 sec [core-id] refers to core-id number in /proc/cpuinfo 'Garbage Values' message printed when garbage values are read Ctrl+C to exit