Thanks for your response SSCrazy and Gail.

The reason I want to do that is that my application is running very slow. I want to allocate more memory to sql server because page reads/sec and page writes/sec are really havoc.

/3GB would help me allocating one GB more to sql server and would help increasing the cache/Buffer by 1 GB.

I think Cache and Buffer are same thing. Correct me if I am wrong.

-MJ