Intel Coffee Lake Core i7-8700K, Core i5-8600K, Core i5-8400 CPU Review on ASRock FATAL1TY Z370 Professional Gaming i7 Motherboard

ASRock Z370 Professional Gaming i7 Motherboard - Cooler Performance and Temperatures

The Intel Coffee Lake processors feature higher clock speeds and more cores, this means that the temperatures can directly be affected by the updated design. In terms of packaging, the processors ship with the same TIM between the IHS that has been used on previous mainstream Intel CPUs. In short, they aren't as great as soldered ones but we should expect temps to stay under some what level of control due to tweaking. The results at stock were carried out with a Cryorig R1 Ultimate air cooler while the overclocked results were carried out with a Corsair H115i GTX AIO liquid cooler:

CPU-Z 1.96 Adds Support For Intel Alder Lake 12th Gen CPUs, Z690 Motherboards, DDR5 Memory & AMD Ryzen 5000G Cezanne Desktop APUs