to clarify, i ment i have been to 80c and survived - (thats why i decapped it. stock was 80c, lapped 70c decapped 50c...) i recomended 55-65 max under load.
my understanding is that tcase max is the maximum temperature for the case, not the cores themselves. cooler is better tho.
2800 on 1.3v is nice good job