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NOTE: This has been tested and tried on Ubuntu 9.04 and should work on other distributions.
In the command line interface (CLI) type in the command below and hit enter.
cat /proc/cpuinfo
This will display all information about your CPU similar as to example below
processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Duo CPU P8400 @ 2.26GHz stepping : 6 cpu MHz : 800.000 cache size : 3072 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm tpr_shadow vnmi flexpriority bogomips : 4521.73 clflush size : 64 power management:
To only find the model name enter the following command:
grep 'model name' /proc/cpuinfo
The command above will have a similar output as below: model name : Intel(R) Core(TM)2 Duo CPU P8400 @ 2.26GHz
