title: Strange registry value for PROCESSOR_ARCHITECTURE for Intel and AMD processor
body: <p>I was having a small task to find whether the system is 32-bit or 64-bit machine during installation?<br>
  I figured the way by getting the value of registry <code>PROCESSOR_ARCHITECTURE</code> located in <code>HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment\</code> folder but I was surprised to find that value was <code>AMD64</code> but my processor was <code>Intel64 Family 6 Model 23 Stepping 10, GenuineIntel</code>?<br>
  So why <code>AMD64</code> for <code>Intel64</code> bit processor?</p>