For the mobo and CPU, I normally would start with the tools supplied with your mobo - they are supposed to be very reliable in terms of accuracy. They may not have the added features of third-party software, but they are free. But one problem with third-party tools is they may need proper calibration.
Of course you can see such basic info in the BIOS Setup screens, but you can't see that when you are actually using your system. But virtually all mobos have included on the CD that comes with them a bunch of utilities and device drivers, and one of those utilities normally is a Windows app you can run along with others on your screen that shows you things like temperatures, fan speeds and voltages, etc. and allows you to change some of those settings. So using that you can see your info in real time while actually working.
For the add-on graphics card, normally there is no way for that card's info to be captured by the mobo. However, the card normally comes with a tool to observe and configure that card, often automatically installed when you first set it up and install its device drivers. Usually you can find its icon at bottom right of your screen. Using that you can observe temps and fan speeds etc. as well as other performance items, and maybe change configuration settings