I have a 3700X R10. I have the same issues with the OC controls not showing up in AWCC. After some more digging and with the help of a few people on this forum, it looks like the 3700X does not have an over clocking profile available for AWCC. That's why you only see the video card over clocking tab, and the other 2 tabs are greyed out and might occasionally "switch" from tab to tab. The profiles are part of a whole bunch of system profiles supplied by DELL, and without the correct profile you will be missing those tabs. Furthermore, the BIOS does not have any CPU overclocking options (PBO) settings available for me, but it does for some other users with different CPU configurations. I have come to the conclusion that overclocking the 3700X is not supported on the R10. I more or less confirmed this with tech support when they were assisting me with this specific issue.     As for the temperatures, I have the same observations as you. I think there must be 1 or more additional case sensors that they use to read temperatures from. I find the overall controls of the fan curves with that program rather counter intuitive. It's an unusual control method, to say the least. I ended up trying different things, and found the offset method to work best.    Overall I think that application could use an overhaul. I am not a big fan of it.    
Hi I have: Aurora R10 Ryzen: 3700X, RTX3070FE with Corsair Vengeance RAM, Corsair H60 & noctua fans, corsair rm850x. Since I've bought this computer I have these 2 issues and cannot figure out how to fix: 1- I have never had OC control in AWCC for the CPU or RAM (but yes to the GPU) 2- The temperatures reported un the 'Thermal Profiles' tab are all exactly the same, and are completely different (way higher) from any CPU or GPU or NVME Temps. I have no idea whatsoever what they represent at all honestly. I have everything up to date completely incl BIOS and all drivers and software.  I have tried uninstalling/reinstalling AWCC 2x now with no solution. It just wipes all of my configurations and the problem remains. It's very limited compared to what it's supposed to do reported by other people. Can anyone help?
Aurora R10, strange temperatures in AWCC Thermal Profiles