Don't know about your CPU, but mine, left all stock, got no lower than .98 V, and only very rarely. In an all-core load scenario, it stayed very close to 1.33 V even after prolonged benchmarking, and that was at close to 85C. And yes, with lower load, it got as high as 1.45 V on individual cores.
So I really can't see how 1.18 V at 70C max (and roughly 45-50C in idle or during low-ish general load) could be worse for the CPU than that, even if the voltage stays constant. It's basically just a fictional scenario where the CPU stays permanently under an all-core load (though not really, because internally it still seems to power down/clock down, just not externally), but with much better voltages and thermals than what it would get if left at stock. The worst factors for possible degradation are temperature and voltage, with temperature generally being considered more important (not that it means you can go crazy on voltage with low enough temperature), and both have been lowered significantly.
So I really can't see how 1.18 V at 70C max (and roughly 45-50C in idle or during low-ish general load) could be worse for the CPU than that, even if the voltage stays constant. It's basically just a fictional scenario where the CPU stays permanently under an all-core load (though not really, because internally it still seems to power down/clock down, just not externally), but with much better voltages and thermals than what it would get if left at stock. The worst factors for possible degradation are temperature and voltage, with temperature generally being considered more important (not that it means you can go crazy on voltage with low enough temperature), and both have been lowered significantly.
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