-115 is nice...
I have problem with both 4670K I tested that higher voltage results in higher temp.
So voltage up = temp up
voltage down = temp down
So voltage have very big influence to temp!
So I had to find the sweet spot between temp and voltage. Was around -50 to -70°C and around 1,7V.
With 1 core temp very very much better (around -100°C with 1,92V)...