9 Replies Latest reply on Jul 9, 2013 4:51 PM by Robert S

    Cooling my i3-3225

    Robert S

      I'm pointing fans at my DH61CR i3-3225 and wonder if anyone could explain the exact location of these objects and perhaps what they are:


      Processor Temp

      PCH Temp

      Memory Temp

      VR Temp

      Core 0 Temp

      Core 1 Temp

        • 1. Re: Cooling my i3-3225



          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...



          • 2. Re: Cooling my i3-3225
            Robert S

            Great answer, this helped me a lot to understand what each means. PCH does not mean Processor Core Heatsink, good to know. I am running custom Bios settings and far prefer a cool computer than a quiet room. On an 80f degree day at high processes my system average is a mere 105f. Still too hot for me, i seek 95f and will be mounting a 120mm fan almost directly above my cpu's fan feeding it a stream of air, as i did with my new video card, piggy backing a 80mm fan on its inlet directly above its fan, cuttings its operating temp by 20f. Leaving my last question, running IDU my new GeForce 560 SE Temperature does not show up on this program, yet my 7 year old HD has no problem reporting its temp. Hope intel can add GeForce support, as many types of separate software reports its temp.... Also while your debugging, intel, view the IDU in winXPro high contrast black desktop.. All black would be nice in this mode..


            Stay cool people, there is no hot temperature that is acceptable. I know this, my all Intel P4 is running 24/7 through its 11th year of being worked like a rented mule. Cool lives forever.

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            • 3. Re: Cooling my i3-3225

              When last I looked into it, the libraries provided by both NVIDIA and ATI/AMD only work if they have a graphics context.Our solution utilizes a Windows Service for its data collection and Windows Services do not have a graphics context. Bottom line, no access to graphics temperatures. I have thought about having a user-level background process that provides the data to the Service, but this is complicated enough that it went onto the back burner.


              We know about the issues with high-contrast black - and the problems with 150% views - but the solution is a *ton* of work and was thus ZBB'ed for more important things. Sorry. Wish we had time to fix everything but we don't...



              • 4. Re: Cooling my i3-3225
                Robert S

                I was able to drop most temperatures by 5-10f by pointing a 120mm fan directly above my cpu fan but my PCH temp did not drop as much, only 5f. Where exactly is the PCH located?

                • 5. Re: Cooling my i3-3225

                  It's a separate device with a ~30mm square heatsink on it. If I remember correctly, the DTS (Digital Thermal Sensor) in the 6 Series PCH has a minimum representable temperature. When the temperature goes below this minimum, it will continue to expose the minimum, so you may see a point where you cannot get the reading to go any lower...



                  • 6. Re: Cooling my i3-3225
                    Robert S

                    Yes, after an exhaustive search i found this heatsink buried under my dual slot video card. After an hours continuous blast from this fan it dropped immediately to 109f and has gone no further. If this is software preventing its display of lower temps, regardless of threshold considerations and realistic implications, i sure would appreciate a new minimum level, as 100f is my boiling point too, and sure appreciate a system that rarely if ever exceeds that. thanks to a battery of fans, I idle at 15f above air temp and game at 20f above that. Very cool, help me see how cool I really am please.

                    • 7. Re: Cooling my i3-3225

                      Sorry, this is a limitation of the hardware implementation...

                      • 8. Re: Cooling my i3-3225
                        Robert S

                        The idea of big code solutions frequently looms over me as well; irrational time wasting pursuits of perfection i dismiss them as, white whales i confirm that dismissal with, until in hindsight i realize i implemented them in general without the great debt i thought they might represent. Proper colors for people of all display limitations, tested thoroughly. Proper temperature monitoring even for competing products, to reward the faithful that still sing  your name's one stop solutions at any occasion. And well thought out hardware that does not report falsely under any circumstance.


                        You do great work Intel, my i3 now sings the same tune my p4 has carried for 11 years, keep it that way and maybe my future i7/e3 will outshine them both.

                        • 9. Re: Cooling my i3-3225
                          Robert S


                          Temperatures - 2013-07 - i3-3225 - 7 fans


                          Fahr Idle - cpu: 093, pch: 109, mem: 084, vr: 088, c0: 082, c1: 081, hd1: 081, hd2: 088, gpu: 085, floor: 72, air: 80f

                          2h.FarCry - cpu: 106, pch: 109, mem: 088, vr: 095, c0: 093, c1: 095, hd1: 082, hd2: 090, gpu: 118, floor: 73, air: 83f



                          unseen: a slit above the PCH feeds excess air from the piggybacked 80mm video card fan, directly on to the heatsink. And the totally missing from this photo 120mm fan, now 2" above the cpu fan, pointing directly into it.