Yesterday, I wanted to see how high I could go on the voltage. I went all the way up to 1.35V idle, giving me slightly over 1.4V under Ati tool load, the clock being 848/2106 and the OCP still didn't kick in

Is it possible the OCP is not working on my card ?

What is a 24/7 safe voltage knowing that my card stay cool, always under 55 under load ?