This program will tell you your RAM technology and what speed is running on your system.
Excellent software that runs in memory. Don't get anything more than 4GB. Waste of money unless you have Windows Vista x64, in which case, it's still a waste of money
You will notice an increase in performance anywhere from 2-4GB. It's typical these days to run that much, although 2GB is the new recommended standard now, not the minimum.