Robert,
I presume you are looking at the output from Intel(R) Desktop Utilities (IDU). Here's an explanation for the temperatures that you are seeing...
Processor Temp - This is the temperature that the processor is reporting externally. It is often referred to as the "package" temperature for the processor. This is the temperature that external fan speed control solutions use in the management of the processor's temperature. Associated with this temperature is a threshold, called the Control Temperature (or Tcontrol, for short), that the fan speed control solution is required to maintain. That is, the fan speed control solution is required to keep the temperature at or below this threshold. If the temperature is above this threshold, the processor fan should be running at 100% (note: I am trying to keep this simple; for those of you saying "wait a minute, there's more to it than that!", yea, that's true, but it's not important in this context; we can discuss nitty-gritty details like this in some separate forum)...
PCH Temperature - This is the temperature of the Platform Controller Hub, the main component of the platform's chipset. The PCH is the device that implements many of the periperal interfaces - SATA, USB, etc. - of your board (it does a lot, lot more than that, but I won't waste space discussing it here; look it up; your board has the H61 version). The Tcontrol temperature for this device is well over 100 degrees celsius (i.e. it can run very hot without issue)...
Memory Temperature - This is a temperature that is measured on the motherboard near the memory (DIMM) connectors. It provides an approximation for the memory temperature. If you want a more accurate memory temperature, purchase DIMMs that also include a Thermal-Sensor-On-DIMM (TSOD) device. Yes, you can purchase such memory (albeit at a small premium) - and, if you do, IDU will also automatically expose their temperatures...
VR Temperature - This is a temperature that is measured on the motherboard as close as possible to the hottest of the voltage regulation circuitry for the processor. Since the processor fan is also used to cool the VR components, this temperature is also taken into account in the determination of the Processor Fan speed.
Processor Core X Temperature - These are the temperatures of the individual Cores within your processor. These temperatures are only available internal to the processor, via software, and thus they are not available to, or utilized for, fan speed control decision-making; they are simply exposed by Intel(R) Desktop Utilities as additional information for your perusal...
I mentioned that the Processor and VR Temperatures are used in the determination of the speed (duty cycle) for the Processor Fan. Similar to this, the PCH and Memory Temperatures are used in the determination of the speed (duty cycle) for the Front and Rear fans.
I talked about IDU exposing Processor Core temperatures as additional information and I also mentioned that IDU has a similar ability to display DIMM temperatures. Well, there is a third source for extra temperatures that IDU also supports. It can expose temperatures from those Hard Drives and SSDs that include thermal sensors and expose their reading(s) via S.M.A.R.T. For all three sources, you can set thresholds that, if exceeded, will cause IDU will generate an alert, but none of these sources can be used for fan speed control...
From a fan speed control standpoint, the control and health thresholds and other parameters are available for modification within BIOS Setup and from BIOS configuration tools like Intel(R) Integrator Toolkit. We establish the defaults for these parameters based upon our thermal validation of the motherboard (in typical Desktop chassis and environments) and against both component thermal requirements and our goals - and in some locales, hard requirements - for system acoustics. Some folks would prefer to have their processors and systems run cooler than this and are willing to put up with the higher acoustics (the louder fans) necessary to achieve this. If you fall into this camp, you can use the capabilities in BIOS Setup (etc.) to adjust these parameters...
...Scott