Both are "right"
But for max temp...obvs TAT can raise it a bit higher...so that's your "max" temp....
who knows a program that can load more than Orthos though? if you can run orthos, you're stable....period.
I have run orthos stable before and yet when running memtest would get errors, and at times I would also play play il2 and computer goes into a reboot. orthos was stable though for 24 hours. just needed a little more voltage and it was good though for the other programs. so your comment on if you can run orthos stable then that's it your good isn't quite so accurate.