Prefetching and alternative defraggers

Is it beneficial to turn off prefetching in XP when using alternative defraggers such as jkdefrag, IObit, Defraggler and others?

 

Please try the performance varies, tough the prefetching decreases the boot time , it increases the application load times, i keep the prefetching turned on.But please dont forget to remove unwanted prefetch entries altough windows automatically removes them.

 

One of the biggest fallacies is to enhance performance by tinkering with the prefetch file. It is there for a reason and nothing is gained by deletion of some or all entries regardless of what some idiot "gurus" have claimed.

 

Yes the decrease in boot times gives an illusion to users.

 

I guess what I was wondering was, does windows undo the optimizations done by alternative defraggers?

I have to admit I don’t see much if any improvement with some of these defraggers.

 

I dont use defraggers at all.