lscpu shows the details about the CPU('s)

cat /proc/cpuinfo returns everything about your CPU.

The bogomips line tells something about its performance

cat /proc/cpuinfo | grep bogo

bogomips : 3979.99

Checkout the flags line

cat /proc/cpuinfo

flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mp mmxext 3dnowext 3dnow up ts

To enable those things use ufed to turn on the corresponding use flags and have higher performance.

emerge --update --deep --newuse world

Check out gcc so it compiles with the right flags.

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