Cpu speed from cpuinfo 2807.00Mhz 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) 2807 MHz CPU Multiplier 28x || Bus clock frequency (BCLK) 100.25 MHz Socket [0] - [physical cores=2, logical cores=4, max online cores ever=2] TURBO ENABLED on 2 Cores, Hyper Threading ON Max Frequency without considering Turbo 2907.25 MHz (100.25 x [29]) Max TURBO Multiplier (if Enabled) with 1/2/3/4 Cores is 34x/32x/32x/32x Real Current Frequency 398.99 MHz [100.25 x 3.98] (Max of below) Core [core-id] :Actual Freq (Mult.) C0% Halt(C1)% C3 % C6 % Temp VCore Core 1 [0]: 398.95 (3.98x) 13.3 74 1 23.1 34 0.6877 Core 2 [1]: 398.99 (3.98x) 13.7 86.5 1 10.5 36 0.6876 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