However correct me if I'm wrong, that isn't showing 3 different components, that's showing the MINIMUM achieved since boot right? The 3 columns are not 3 components, they are MAX, MIN, AVERAGE?
Equally that screenshot is not showing GPU usage, it is showing fan usage. The rest is CPU related.
If not - Frankly, I'd first just check inside your case to see if all 3 fans are spinning (and also that your GPU actually HAS 3 fans). HWMonitor can often throw out incorrect readings with RPMs, Temps and Voltages.
Also, newer GPUs regulate their heat dynamically, so the fans will turn on only once the GPU cores reach a certain temperature, and then the speed of the fans will increase in order to keep the temperature low as load increases. So...