L2 Cache memory registry setting for Windows Vista

This tweak will set the Vista registry to use your L2 cache memory which is embedded in your CPU.
Every CPU nowerday's has Level 1 cache memory and Level 2 cache memory which enables the core of the cpu to take pieces from the main DDR system memory and calculate with it, then store it back and so on, the size of your L2 cache can be set in the registry of Vista and for some reason it seems that Vista isn't doing this by default.

The registry key where Vista stores the size of your L2 cache is:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management

In here you will probably see a key called SecondLevelDataCache with a value of 0 which means that windows Vista didn't set the memory size of the L2 cache by itself.

You can set the amount of your CPU L2 Cache here for Vista to use.