title: show Processor speed
body: <p>I have a server with an AMD Opteron(tm) Processor 246 and a customised Linux kernel (2.6.9-100.ELhugemem) in it. When I check the processor using <code>dmidecode</code>, it displays a speed of 2000 MHz, whereas <code>/proc/cpuinfo</code> shows a speed of 1000MHz. 
  Can anybody explain this and also give me a method to check the current CPU speed?</p>