Probably not. If you were to look through you specs and find the weakest link, what would it be? For most people, it is their hard drive. In fact, their boot time is almost directly related to the speed of their hard drive. You have a small hard drive, probably 5000 RPM. Upgrade to a 256GB SSD and you will really see your performance spike!
That having been said, if you already have the RAM, you might as well stick it in and see what happens.