What are dangerous motherboard operating temperatures?

There are five motherboard temperature sensors for my PC, according to HW Monitor.

Two of these, called TZ00 and TZ01, are always at 28C and 30C respectively, no matter what. I am inclined to believe that these are bugged readings, since my ambient temp itself is often above 30C.

The other three readings are referred to as TMPIN0, TMPIN1 and TMPIN2. I have no idea what TMPIN0 measures, but TMPIN1 seems to somewhat correlate with my GPU temperature and TMPIN2 definitely matches with the temperature of my CPU.

Under 100% GPU load (with corresponding 85% CPU load), the temperature readings for my PC's motherboard are as follows:

TMPIN0 - 50C //(Idle = 38C)

TMPIN1 - 64C //(Idle = 45C)

TMPIN2 - 70C //(Idle = 43C)

[When CPU is stress tested to 100% load, TMPIN2 reading reaches 74C, with TMPIN1 reading reaching a max of 49C]

I would like to ask very simply, are these still safe (albeit high) operating temperatures when at 100% GPU/CPU load, or are these very dangerous temperatures?

At what point should I be conceed with the temperatures of my motherboard? I have a Dell 0XR1GT motherboard.

Mind, I live on the equator, so I have ambient temps of 29C at night and 34C during the day on average.

Thank you!

Edit: To add, when at 100% GPU load my GPU temperature reading itself is 80C, and under 100% CPU load, my CPU package temperature reading is up to 75C. However, the focus of my question is still on the motherboard temperature reading, since I have found the GPU/CPU readings themselves while high are still acceptable.

Recent Questions...