Lol never had any need to run a 12 hour CPU-Z validation to confirm it's stability. Been using it for about a year now No problems. Now delidded running bare die
Note the stepping/revision numbers EL/L1. To my knowledge week 18 is considered to be the best batch for clocking.
My recent AIDA score after setting up new ram
Here's one I did for HWBot Super PI 1M @ 5.5GHz (voltage upped to 1.5v for a quick run)