i7-6700K 4.0Ghz - 4.2 Ghz Boost idle temps are 29C to 30C. Under load they're between 50C and 55C. Prime95 stress test temps were 65C at their highest. All this at 1.232V. This is using a Deepcool Lucifer V2 air cooler. When stressed at a 4.6Ghz overclock temps rose to 70C max at 1.325V.

ASUS ROG Strix 1070 O8G idle temps are between 33C and 39C depending on ambient. Under typical gaming load in 1080p the highest temps I get are 55C to 59C with the fan curve always between 27% and 33%. Highest fan RPM's were about 1200 and it's inaudible when compared to chassis fans.

The above specs are where I like my component temperatures to be to ensure longevity. Unlike some I tend to squeeze every drop from my equipment as opposed to changing components when something with more horsepower is released so I tend to take it easy or ensure adequate cooling. Despite specified thresholds by manufacturers the cooler the components are the more likely their life cycle is increased. Ideally you want to keep temps of CPU and GPU under 80C.