AMD CPUs have a lower thermal margin than Intel CPUs do. Typically people don't overclock on AMD past the 60-65C mark, Intels thermal margin for overclocking typically extends into the ~85C range.
As for the GPU (and I suppose the CPU) it depends entirely on what cooler is being used. If you're using something like an ASUS Strix cooler, I could see it being in the 60s. If you're using a reference blower cooler, I could see it being in the 80s. Aftermarket coolers from different companies vary from being an ASUS Turbo blower cooler to something like a Zotac GTX 1070 AMP. The cooling difference between the two of those is going to be massive.