Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
I haven't had any experience with a 6800NU, but I would say that ramsinks are pretty important. I've got some aluminum ramsinks on my watercooled GT, and they get pretty warm to the touch during games. So warm that I added a fan to blow on them.
Now I know that this memory doesn't need to have any cooling, but its gets hot. Why not throw some on there? I'm really curious about how hot ATI memory chips get on their cards, since they're not cooled at all. It may not do a lick of difference, but I felt better knowing they wouldn't overheat...