Registry Guide for Windows Registry Guide for Windows
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Registry tweaks, tricks & hacks to optimize, enhance and secure Microsoft Windows.

Optimize the System Cache Size (Windows NT/2000/XP)
Category: Home > Windows > File System > Caching and Memory

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This setting controls whether the system cache is optimized for a Desktop computer or network server. Network servers usually require more memory dedicated to file caching, while desktop computers require more memory for running software applications.

Open your registry and find the key below.

Create a new DWORD value, or modify the existing value called 'LargeSystemCache' using the settings below.

Exit your registry, you may need to restart or log out of Windows for the change to take effect.

Note: Some programs, such as SQL Server and Exchange Server, will set this value during an installation and override the change.

Registry Editor Example
|NameTypeData|
|(Default)REG_SZ(value not set)|
|LargeSystemCacheREG_DWORD0x00000000 (0)|
-
|HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ Session Manager\Mem...|
-

Settings:
System Key: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ Session Manager\
Memory Management]

Name: LargeSystemCache
Type: REG_DWORD (DWORD Value)
Value: "0" for Desktops; "1" for Servers

Related Tweaks

Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.

Last Modified: May 28, 2003

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