you won't get warning for mem. errors from the miner 
Test the card by letting it work for 24h. If it survives 24h its good and stable
Hmmm, well the errors im referring to are the ones reported by HWINFO, after dialing it back to 2025 mem freq then they no longer occur at the cost of Hashrate of cause , so you are saying these errors don't matter?Test the card by letting it work for 24h. If it survives 24h its good and stable