madman322 :
I overclocked my 5850 a few weeks ago, and recently have been noticing games getting glitchy and losing frames. I also heard the fan reving to about 85% during some parts of the game. I set my card back to all of its defaults. However, I am reluctant to play any games again for fear of further damaging the card. Is it legal to OC the card via CCC? Can i still send it back to HIS and see if they can send me a replacement that might have less problems? Or am i overreacting to a situation that does not deserve as much attention as I am giving it? Also, the game I've been playing is Fallout 3. Should be getting frames in the 60's but i was dropping to 30's and the fan was revving. Thanks for the help.
What values did you overclock to? It sounds like you overclocked your video ram too much, hence the protection kicked in and instead of getting more frames, you got less. You should read more on overclocking and specifically on your cards abilities and see how far other users got to. For example if other users found their video ram to overclock to about 5,000MHz as a limit, you can't expect your card to reach 6,000MHz with no problems.
It does not matter HOW you overclock your card, obviously running something outside its specifications it was designed to run at is dangerous and although "legal" it is usually warrantied by the manufacturer up to a point. After that you are on your own... Now usually all cards have a safety margin where you can overclock without any problems, but that is quite small so don't expect miracles.
How do you know you should be getting frames in the 60's with Fallout 3? What is your PC configuration and what resolution and settings are you running at?