Microstuttering is in every game with every config.
Why in Sampsa's test we can't see MS?
Because with 48x0 CF Grid is CPU bottlenecked. When there is CPU bottleneck, MS dissappears.
Also Vsync helps that only when you're above 60 FPS average. When you're under that it's even worse.
I'll test it with X2 when I'll get one :P
Conclusions made after few weeks of test with 4 different CFs, Phenom, QX9770 and 16 games.
Article with nice graphs soon :P