- Real Temp (CPU)
This program keeps an eye on your Intel processor's temperature. Launch a game or use heavy software and you'll notice how the numbers keep changing. Real Temp displays the temperature for each core, so if you have an Intel Dual Core you'll see two columns with information. Intel Quad core gives you four columns and so on...
- Crystal Disk Info (HDD)
Hard drives don't last forever just like any hardware, but if your HDD (or SSD) is about to fail you need to know when it's going to happen! All your files are stored there and you want to save them. Thankfully this doesn't happen too often and Crystal Disk Info can be used for other purposes than detecting hard drive failures. Crystal Disk displays a lot of useful info about your HDD just like Real Temp.
- GPU-Z (GPU)
Gamer's best friend. GPU-Z detects all information about your graphics card and displays real time data. GPUs are known for generating crazy amounts of heat and that's something we want to prevent. With GPU-Z you can keep track on temperatures, voltage and many other stats.
NOTE for laptop users: Your computer may not have a GPU and runs all grahics on the CPU instead. Launch windows dxdiag if you don't know what hardware you're using.
I personally use the above mentioned software and many other. I love to keep a watching eye on the computers I put together and more people should do this. Don't want to end up the same way as your technical grandparents!