I recently opened my 4890 up to clean the dust it as it had huge ammounts, the front of the heatsink was like 100% blocked, but as i had no rubbing alcohol left, i used goo gone on the processor to get the paste off as it was stuck on by ALOT, i was wondering if this was okay? or should i redo it with my ocz freeze, and is using 1yr old ocz freeze okay?
If you cleaned the old paste off you need to reapply new paste for sure. Aftermarket paste can make quite a difference. IC Diamond 24 made my GTX460 run 4C cooler at idle and 7C cooler at load than the stock stuff. Free overclock.
As long as it is not dried out I say year old paste is fine.