From what you have said am I right in thinking that it is not correct that the "chip needs to run at 75C for optimal efficiency" but more that 75c is the Max temperature?
Rich
For safty, we test it under ~ 85C, okey for some days. But ~90C is not good.
For performance, we find ~65-70C maybe better for both performance and efficiency.
ng
Thank you for the explanation, this is now starting to make more sense.