Yes, Voltage in and out. I like SpeedFan but it has many limitations that are common to all 3rd party monitors and that is properly matching sensor to label, and they often give data on things we just don't need, or have any control over. And that varies CPU to CPU, and more importantly, motherboard to motherboard. For this reason, when it comes to HW monitoring, I generally like the monitor provided on the utilities disks that came with the motherboard, or from the motherboard's download page. I do use CoreTemp to monitor my CPU temps, however. If you are not overclocking, don't worry about those voltages. The voltages you need to care about are 12VDC, 5VDC and 3.3VDC as those are provided by the power supply. The other voltages you see are motherboard generated from the PSU supplied voltages needed by the CPU, RAM, and other devices. Have you checked out Speccy from the makers of CCleaner. It does not run full time in the background, but it is very informative.