Do you have a nice, new computer with large L2 cache? Probably, you payed extra to get 2MB L2 instead of a lesser alternative. Well, here is the news - Windows is not using all that extra goods of your CPU. By default Windows only uses 256KB of your second-level (L2) cache. Ouch!

Here is how to make the bastard stop wasting your valuable resources (L2 cache has significant impact on the performance):

  1. fire up registry editor (Start-Run-regedit)
  2. Edit the key: [HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Session Manager\\MemoryManagement\\SecondLevelDataCache]
  3. Enter appropriate amount of L2 cache size. Options are: 0 - 256KB (default), 200 - 512KB, 400 - 1024KB (1MB), 800 - 2048KB (2MB)