Quote Originally Posted by SKYMTL View Post
It isn't me who is defining "noticeable". Read any article or scientific paper about perceptive latency and you'll likely come to the same conclusion.

When I make a statement, don't think for a second that I haven't researched it to an extensive degree.

Links to some of said papers:

http://www.stuartcheshire.org/papers/LatencyQuest.html

http://www.ncbi.nlm.nih.gov/pubmed/16639613 (link to PDF @ source)

http://www.perceptionweb.com/abstract.cgi?id=p240749

If you have an account @ Sciverse / Science Direct, there are several other articles in their archives which discuss the same thing. Unfortunately, I can't post links to them due to copyright terms but you'll quickly get the idea after Googling a bit.

However, I will distill it down into plain speak: In extensive lab tests with and without human subjects, a time of 48 frames per second (ie: 20.83ms) was deemed to be the threshold at which the majority of people anbd test instruments saw completely smooth display images or refreshes.

One test actually went so far as to rapidly flash a lightbulb at variable speeds in order to demonstrate when people would see it "flicker". That threshold for 95% of the participants was at 50 flashes per second (ie: exactly 20ms).

Not sure how much more information anyone could be looking for here....
First, you absolutely cannot compare gameplay with just displayed sequences. 48 fps, is way too low for many games, think input lag. In some game engines, 100+ fps are required for truly direct control. Secondly, it is unimportant what the "majority" feels as long as there are still people who have higher standards.
So did you actually experience SLI/CF first hand or did you not? Theory has its place, but real life can be something different altogether. This smells like sugarcoating the problems that CF has. I'm always highly suspicious if some people - especially reviewers who should be objective and very careful with such stuff - tell me what I should or shouldn't be able to feel.