What stutter? The fps wont reach >60 so no issues haha or else on adaptive vsync

Stutter issue is for the new thing Adaptive Vsync. Dont use that feature = no problem.

just set vertical sync : Use the 3D application setting
set triple buffering on to improve performance during vsync on.

make sure driver 304.79.

my stutter in FIFA 12 now gone

301.42 still give me stutter on game like FIFA 12.
try 304.79 beta driver. http://www.nvidia.com/object/win8-win7-win...eta-driver.html
at least work for me.

since this is a new kepler tech. some games might get some issue on it

just install it, maybe you could check the box that says perform clean installation, but even without that it is just fine
nvidia driver not as fragile as AMD

only the new 6XX nvidia series offers boost clock. basically it works like intels own turbo boost. in that it will overclock the cpu (gpu in this case) automatically when needed. Gpu clock is the stock speed that the card will alwys run at so overclocking that may give you overall better performance as im not sure how gpu boost works and how reliable it is. Overclocking gpu boost will just set the card to go faster under intense use. But that again is unclear and how stable it is. Generally overclocking the gpu boost on already factory overclocked cards is a bad idea. Hence why the asus 670 top edition had so much stability issues because it was overclocked to 1137 but in fact the boost speed put it somewhere at 1280 mhz lol. thats a huge difference.

The fan speed cannot be lowered to zero. Although the slider moved to zero but the fan will still be spinning.

can confirm?

since i got only 500watt psu,

can it support 570 & 670 rite?    680 & 580 out of my list?