A few questions about FPS in games

1. Would you notice the same amount of difference between 120 fps and 60 fps compared to 30 fps and 60 fps?

2. Is 20 fps a good gaming experince?

nah, I wouldn't notice. 30 and 60 is the best I can do

@Lulu_Lulu: 60 fps once you get used to it you will notice the higher frames like 120

I prefer 30fps -1080p.

@ inso-maniac

Guess I better start saving up for a sweet PC then.

The sweetspot is 60 frames, beyond that you can't really notice. watch Reality Check on this site, he explains it pretty well

To be honest, I wouldn't. I would be content with 60fps.

You can though. There is currently no known upper limit of what the human eye can detect, but there's variance from person to person, and even from moment to moment for the same person, so it wouldn't be wrong to say that maybe some people can't detect over 60. But we know some people can, including air force pilots that have been able to identify objects displayed for as low as 1/220 of a second. The mind is very good at noticing brightness and changes in brightness (which is all motion really is) and better with some colors than others.

On a more tangible level, it's a matter of what you're using to view the information. TVs have built in image processing and use motion blur, monitors have none of that. Personally, I can play a game at 30fps on a TV just fine, but I notice it instantly if a game on PC should suddenly lock itself at 30fps.

It also depends on what you're looking at. If you're watching a slow moving fog, it could look smooth at 10fps. If you're watching a person running, it would look choppy.

Perfect simulation of reality would require much more than 60fps, but it'd be wasted to go above 60fps for a game console, now, as most people don't have the sort of tv/monitor necessary to make use of games that run above 60fps.