Sajin
Nope.
ZCTxCHAOSx
If you are having problems RMA it.
Both of these are correct. If it keeps doing it, RMA. If you're no longer having problems with it, don't worry.
The thermal pad issue has only one symptom: puff of smoke, burn marks on the back, and a card that no longer functions. If you don't got that, you don't got that.