More ram or a better graphic card Should Do the trick.....
Being an ass 95% of the time.
Incorrect. The human eye can detect over 100 frames per second and see a noticeable difference. Of course if the monitors refresh rate is limited to 60Hz you won't be able to tell as the image will always be displayed at a maximum of 60 frames per second, but on a 120Hz monitor you will definitely be able to see the difference.
There is a big difference between what the eyes can see/process and the amount of frames required to form a fluid scene.