Yes and yes.
you just unscrew it and it comes off
no increase in overclocking potential though, the windforce cooler is already very good and water doesn't seem to be adding anything in terms of OC
some people are still hitting 70 and saying that the card is throttling at that temp tho? i know for a fact my 570's on water NEVER go over 45 and thats running bf3 with 1.15v and 822 / 1990 mem. also less noise too? seeing i already have a full loop it would be rude not to put the 670's under water
![Stick Out Tongue :P :P](/styles/default/xenforo/vbSmilies/Normal/tongue.gif)