dumb computer question

[What's_nitro?]

You are definitely much cooler now! Unless the chip you put in also has a faster clock speed, I'm afraid you wont see a large performance boost. If you open a ton of programs, or play a movie, 3D designing, or anything that requires lots of memory then it will help tremendously. It wont be faster, per say, but there will be no lag where the system would usually resort to using the page file because RAM was full.