Only had it about a year. Its been working beautifully until recently. I could play games on ultra but recently, it plays for 5-10 min and then starts to chug quite a bit. If Im playing Skyrim and restart it, it tells me my default settings is Medium, where it ran Ultra like glass before. I can only run it on Low now for any length of time. I've uninstalled Steam and the few mods I had and reinstalled everything but it still chugs. Farcry 4 same thing... Low settings where it was High before. Suggestions? PS - PC Case is well ventilated and temps avgs were 70-75.

go back a few driver versions, the last few have been horrible
 

Okay, last solution didn't work either. After a while, the card just randomly heats up. Its so odd. Sometimes it'll stay cool for an hour or more and others just for a few minutes. Driver may be the culprit.
 
Veganfanatic,
 
I did what you said, rolled back to and SO FAR (knock on wood) its working! Crossing fingers. Will follow up later.

cdc-951
Which driver did you roll back to?

 
347.52   I mostly only play Skyrim and Far Cry(s) some older shoot'em ups so no rush to try and crash on newer drivers.
 
I wiped hard drive and reinstalled my Windows 7 64 and lo and behold, my 660 GTX is running Skyrim like glass again. So chances are I had a virus, something was running in the background, or whatever... just too much flooding the PC after 3 years of minimum maintenance. I will go ahead and apply the new thermal paste when I get it in the mail though. Temps are same as before though yet game is 100% again. Very odd.

ty_ger07

Re: Is my 660 GTX 3gb dying? - PROBLEM NOT SOLVED - IMPORTANT - Should read.

Nope, definitely not going to try to help with that title.

LOL.. understood. Anyway, problem is solved. I wiped and reloaded windows. Runs like glass at ultra settings. Just too much junk after 3 years.