How to Disable SuperFetch on Windows Vista
The SuperFetch service in Windows Vista preloads your system’s memory with the applications that you use most often. This makes launching of those applications much faster, but it might be an unwanted behavior for system tweakers or gamers.
There’s no hard evidence that enabling or disabling this service will increase performance in general, but if you open and close applications often you should definitely leave it alone. You will have to test your configuration to know for sure.
Note that I don’t recommend disabling this service, but we try to cover how to do everything on Vista.
Open up Services in Control Panel or by typing services.msc into the Start menu search or run boxes.

Double-click on Superfetch in the list to open up the properties, and then change the drop-down to “Disabled”. You can also click Stop to immediately turn it off.

I don’t recommend this tweak for regular users, but somebody might find it useful.
Source: Pc tips for khmer…
I disabled superfetch but Vista is still caching. When previewing my pictures and it gets a video clip it says something like not enough memory to play clip. Had that also checking mp3 files with media player. After half an hour won’t play – no memory. What a crap.
Roland
ខែសីហា 5, 2008
Please check your Virtual Memory!
vistakhmer
ខែសីហា 14, 2008
[...] disable superfetch: How to Disable SuperFetch on Windows Vista Windows Vista For Khmer… . This might help if you have a slow hard drive. Also go on task manager by pressing ctrl alt [...]
Vista Optimized? - Electronic Arts UK Community
ខែសីហា 29, 2008
want to disable Superfetch in Windows 7
then follow the tutorial in below link
http://everything-for-windows.blogspot.com/2009/12/how-to-disable-superfetch-in-windows-7.html
viru
ខែធ្នូ 15, 2009