Optimize Large Second Level Cache

Windows is optimized for a 256KB secondary cache by default. With most computers now having L2 caches larger than that it pays to take the time to change the setting to correspond to the size of the cache memory installed.

Open your registry and find the key below.

Create a new DWORD value, of modify the existing value, named "SecondLevelDataCache" and set it to equal your L2 cache size in Kb's (decimal).

Restart Windows for the change to take effect.


Settings:
System Key: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management]
Name: SecondLevelDataCache
Type: REG_DWORD (DWORD Value)
Value: Cache (in Kb) using Decimal Notation

Note: This tweak is only useful for older processors with the cache located external to the CPU.