Can you drop the IccMax? depending on what kind of lower power target you are trying to achieve. For example, try something around 115 Amps. That's a 10% drop. Or may be 109Amps for a 15% drop. That will lower the clocks on the CPU somewhat and should decrease temps by a lot. Generally Amps vs Power is quite linear (like 90% linear). You will need to find your own balance between the right amount of under-volting and the right amount of under-amping to see whatever meets your performance ta