11 Replies Latest reply on Jun 28, 2011 8:25 AM by Foti

    i7 950 temperatures high?

    fidq

      I have just purchased an I7-950, and i'm a litte worried about the temperaturs.

       

      Is this normal?

       

      Windows 7 64bit idle temp.:

       

      CPU: 35C

      CORE1: 47C

      CORE2: 49C
      CORE3: 46C

      CORE4: 50C

       

      Surfing the internet:

       

      CPU: 44C

      Cores: 52+ C

       

      Running GTA4(all on high 1280x1024):

       

      CPU: 60-65C

      Core1: 66-71C

      Core2+3+4: 60-66C

       

      Running Prime95 after 5min:

       

      CPU: 75C

      CORES: 80+ C

       

      SPECS:

       

      ASUS RAMPAGE III EXTREME - ALL settings on auto.

      I7-950 @ 3.066 - 3200, STOCK COOLER

      CORSAIR Dominator-GT CMT12GX3M3A2000C9 @ 9.9.9.25 DRAM volt 1.65V, QPI 1.45V, 1866 mhz,

       

      Room temp: 18-22C

       

      #UPDATE1:

       

      MB TEMP: 36C

      ICH: 52C

      IOH: 55C

       

      all in idle

        • 1. Re: i7 950 temperatures high?
          Adolfo_Intel

          The maximum recommended temperature for the CPU is: 67.9 degrees Celsius as showing at:

           

          http://ark.intel.com/Product.aspx?id=37150&code=Intel%C2%AE+Core%E2%84%A2+i7-950+Processor+(8M+Cache,+3.06+GHz,+4.80+GT/s+Intel%C2%AE+QPI)

           

          Keep in mind that you do not need to worry about the cores temperature, only about the CPU temperature.

          • 2. Re: i7 950 temperatures high?
            guermantes

            Adolfo_Intel wrote:

             

            The maximum recommended temperature for the CPU is: 67.9 degrees Celsius as showing at:

             

            http://ark.intel.com/Product.aspx?id=37150&code=Intel%C2%AE+Core%E2%84%A2+i7-950+Processor+(8M+Cache,+3.06+GHz,+4.80+GT/s+Intel%C2%AE+QPI)

             

            Keep in mind that you do not need to worry about the cores temperature, only about the CPU temperature.

             

            Hi,

             

            Regarding your last sentence, you are the first one I read to actually spell this out clearly.

             

            I have been asking around for months in DIY forums since I built my first computer, buying heatsink and extra fans just because I was worried I was running too hot with 75 degrees celcius on the hottest core in Linpack and OCCT. But the CPUTIN is only 60 so I was alright all the time!!

             

            I asked but overclockers seem to be mixed up on this issue, they just give a figure but not whether it is CPU or core temp (for newcomers to the trade like me the differernce between the cores and the CPU is not obvious).

             

            Just because your answer is uncommon, might I be so bold - without wanting to offend you - to ask if you are really sure about that the cores temperatures do not matter?

             

            Thank you very much.

            • 3. Re: i7 950 temperatures high?

              My CPU was hitting 99c and my system was locking up. I thought it was my video cards....

               

              I figured out my heat sink was not sunk so I bought some artic silver 5 and reseated it.

               

              Now I am running a warm 74c with a full compliment of fans at idle and it does not seem to get over 77c. I replaced all my fans except the CPU fan just to be safe.

               

              Now should I assume that my CPU that passes all tests with the Intel Desktop Control Center running at 74c is bad, or should I upgrade my heat sink (and likely my case since I doubt any of the mammoths will fit in my case)?

              • 4. Re: i7 950 temperatures high?
                Foti

                I have the same MB with a i7-930 and get the same problem with my termal readings, but before my PC is running on 4.0GHz stable around 45º ~ 50º C,room at 22º C.

                 

                If you google about our problem  you will see many people with the same problem.

                 

                check the thermal grase, the bios settings, processor and MB, this is the most comon itens to check.

                • 5. Re: i7 950 temperatures high?
                  Foti

                  nice Adolfo_intel

                   

                  Adolfo_Intel wrote:

                   

                  The maximum recommended temperature for the CPU is: 67.9 degrees Celsius as showing at:

                   

                  http://ark.intel.com/Product.aspx?id=37150&code=Intel%C2%AE+Core%E2%84%A2+i7-950+Processor+(8M+Cache,+3.06+GHz,+4.80+GT/s+Intel%C2%AE+QPI)

                   

                  Keep in mind that you do not need to worry about the cores temperature, only about the CPU temperature.

                   

                  But until now nobody get us why the number of similar hi-temps reading are increasing, u guys saysto us check this, that, but i thing that u need to get a more clear answer tu us.

                  I know that many people do S but if u buy a computer and get this problem something wrong and need to be clarify by the manufacture.

                   

                  I hope that u can understant my vision of the problem, sry for my weak english.

                  • 6. Re: i7 950 temperatures high?
                    Doc_SilverCreek

                    Cooler is always better, but you are at the high end of the good zone

                     

                    The Tcase is the CPU temperature as measured at the surface of the processor package where the heat sink contacts.

                    This should not exceed 67.9 deg C  http://ark.intel.com/Product.aspx?id=37150

                     

                    Very few heat sinks have a temperature sensor mounted in them so most people look at Tcore which is the internal temperature of the CPU package.

                    Tcore does not have a "normal" specification, but usually runs ~ 6 to 10 degrees hotter than Tcase or if you look at it the other way, Tcore is OK up to Tcase +~10 (67.9 Deg + 10  =78)

                    This is the absolute max. Red lineing your CPU. Smart people try to keep it well below this limit.

                     

                    I try to design systems to never exceed Tcase max on the Tcore reading because then I have plenety of margin.

                     

                    What happens if it is too hot?

                         The CPU will enter therimal throttling mode and you loose all the horse power in your system. If it gets hot enought, you hit them trip and the system crashes.

                     

                    Most common causes of high temp.

                    1. Heat sink not seated all the way. The plastic goes into the holes before you push the knob down.
                    2. Air flow blocked by cables or other obstructions.
                    3. Too much Thermal grease. -- a thin coat is great,  too much is bad (it is not tooth paste), none is worst.
                    4. Bad fans
                    5. Extreame overclocking
                    6. To hot of ambient tempeature. (it may look neat in the desk drawer, but it will not cool)
                    7. Case design that does not move outside air in and hot air out

                     

                    Some system designers are more concerned with a quite system than a cool system. These engineers will set the fan speed contol to keep the CPU very close ot the max tempeature and rely on the fan control to ramp up as things get hot.

                     

                    Because of this it is difficult to say if 74 - 77 is to hot. It is hot. It is near the upper Therimal throttling limit, but if you are not getting any proformance degreadation it should be OK.

                    Personally, I would feel much better if it was running about 50 at idle and 70 under a heavy load.

                    • 7. Re: i7 950 temperatures high?
                      Foti

                      Now it is seriously the chat here at last, thank Doc_SilverCreek.

                       

                      Even this is not my post I hope to help solve my problem and friends experiencing the same problem as our friend here says.

                       

                      In my case
                      What could explain an increase of ~ 10 ° C initial temperature of the processor selected in Bios when the only hardware change was the replacement of memory and even after the exchange of memory obitve normal temperature readings for a while.
                      The items that you reported were checked and rechecked.
                      I'm out of ideas and no money starting to worry, I need to find the solution.
                      I appreciate your help.

                      • 8. Re: i7 950 temperatures high?
                        Doc_SilverCreek

                        The clue is you made a change and it caused a change,

                         

                        Is the new memory the same core voltage as the old memory or did you just add more memory?

                         

                        Higher memory voltage = higher wattage = more heat, Since the memory controller is inside the CPU now, hotter CPU.

                         

                        More DIMMs = more memory channels. This CPU supports 3 memory channels so for every channel you bring on-line, you start working all the extra internal transistors in the CPU. = more heat.

                        You get the added advantage too that the cores are way faster than the memory so with 1 memory channel, the CPU core is speding a lot of time waiting on the memory, As you add more channels, the cores can pump data in & out of memory way faster because they are not having to wait for memory and you get faster preformance, more bandwidth and (wait for it)........ more heat.

                        • 9. Re: i7 950 temperatures high?
                          intel.

                          Hi! fidq

                           

                          Your system is in idle state nothing to worry about the temt.

                           

                          As in no load condion you system is at 35C which is nice and your core goes upto 50C.

                           

                          Always remember this temt. is not stable and it varies according to the on load and no load conditions.

                           

                          And on load condion during GTA 4 your system hits 65C.Its not so high but you know if CPU is operated regularly in this tempt then tempt. increase gradually which is not fine.

                           

                          I think for this high end system you must have a nice cooler.I have same configuration but CPU is i7-980 and i'm using a liquid cooling(corsair H50) and system tempt goes roughly upto 50C in extreme condition.

                          So ithink you must buy a better cooler.

                          • 10. Re: i7 950 temperatures high?
                            parsec

                            Blair,  If you are at 74C at idle, that is rather high IMO.  You mentioned you replaced the fans in your case, what size are they and what kind of case?  We don't have enough information about your PC to determine if your CPU is bad, which is unlikely.

                             

                            Your video card is likely contributing to the high CPU temperature, as video cards can use far more power than a CPU does.  If the video card is close to the CPU, which is common, the hot air from the card is what is being used to "cool" your CPU, which is not the best situation.  The more air you can get into and out of your case, the better.  While I am certainly a fan-natic, I don't use anything smaller than a 120mm fan, as smaller one really don't move much air, and some 120mm fans don't either.

                            • 11. Re: i7 950 temperatures high?
                              Foti

                              My gear
                              Asus Rampage III extreame
                              CPU i7-930 2.8GHz (stock no OC)
                              Corsair 1000W Silent Pro Gold
                              3X4 Corsair memory vengeage 2000MHz
                              Standard intel cooler
                              Tthermal artic grease MX4
                              Room temp about 20° C

                              Processor 45° C


                              Even outside the case  on my desk the temperature starts at 45 ° C without load.


                              The cause of the problem in my case was an electrical problem on the motherboard, since replaced the motherboard and the cooler for a H70 these are the results.

                               

                              http://img832.imageshack.us/img832/8295/tempi7930.jpg

                               

                              http://img9.imageshack.us/img9/9213/tempi7930a.jpg

                               

                              Room Temp at 19º~21ºC.

                               

                              I hope this helps.