I got the same batch and 5ghz needs 1.42v+ for 8hr prime stable. So I stayed at 4.8ghz also.

Quote Originally Posted by Mysterfix View Post
Been working on this one for a while, I got 4.8ghz down to 1.36v but 5ghz is still a mystery. I can get IBT and Lynx to go just fine but prime gives me a random restart every time.
Batch#: L042B291