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Passive cooling my i5

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  • K
    Keljian
    last edited by Mar 3, 2015, 7:43 AM Mar 3, 2015, 7:20 AM

    So, I decided to go with passive cooling.

    I had a scythe big shuriken 2 (rev b) from another project and popped it on my i5-4570T without a fan, while I do only have my own box to compare, it is sitting between 50-60C and running well.

    No fans in the case, and it works!

    Hoping this helps someone who is considering something similar

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    • K
      kejianshi
      last edited by Mar 3, 2015, 7:24 AM

      I'd run it with a big huge slow fan and clean it once a year….  SLOW = less dust and quiet.

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      • K
        Keljian
        last edited by Mar 3, 2015, 7:37 AM

        No fan means minimal dust :)

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        • K
          kejianshi
          last edited by Mar 3, 2015, 7:39 AM

          Its a nice cooler…

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          • M
            maturola
            last edited by Mar 3, 2015, 2:56 PM

            @kejianshi:

            Its a nice cooler…

            I used the same cooler for a i7, however i connected the fan to a external switch, it is off most of the time but I have the options to turn the fan on during heavy loads, I actually think I had only turn it on just once.

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            • P
              Pylor
              last edited by Mar 3, 2015, 7:53 PM

              @Keljian:

              it is sitting between 50-60C and running well.

              No fans in the case, and it works!

              Just curious, what happens if you turn on prime95 or something that pushes it?

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              • M
                messerchmidt
                last edited by Mar 3, 2015, 7:56 PM

                i would have some type of exhaust fan in there

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                • K
                  kejianshi
                  last edited by Mar 3, 2015, 8:05 PM

                  Why bother with a fan?  The TCASE is 66.35°C

                  He has 6 whole degrees left over before he hits thermal max…  ;D

                  Its gooooood....

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                  • P
                    Pylor
                    last edited by Mar 3, 2015, 8:20 PM

                    @kejianshi:

                    Why bother with a fan?  The TCASE is 66.35°C

                    He has 6 whole degrees left over before he hits thermal max…  ;D

                    Its gooooood....

                    While I agree with the sentiment that no fans is probably not good, I'd imagine he's reading the core temp which would correlate with the TJUNCTION/TJMAX limit.  TJUNCTION is core limit, TCASE is the IHS limit, and the IHS is usually a bit cooler than the cores themselves.  That being said, once he gets an actual load on the processor I think it's going to start cooking without a fan on the heatsink.

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                    • K
                      kejianshi
                      last edited by Mar 3, 2015, 8:23 PM

                      I tend to agree - Is there a fan that only spins up at all if set to a predetermined temp automatically?

                      Mine are always turning either slow or fast but never sitting still.  Seems its possible since my laptops don't spin up unless they get hot.

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                      • H
                        Harvy66
                        last edited by Mar 3, 2015, 8:44 PM

                        In other forums, you'll sometimes read someone asking why their computer seemingly runs fine, but once they load their video game of choice, the FPS is like 10. Then they'll mention later that the he at sink was not attached correctly and there was a gap between.

                        Modern CPUs are quite good at self throttling, although high temps for long periods of time will shorten their life.

                        I had a GPU that ran at 108c during the summer and a much cooler 105c during the winter. I used that GPU for 5 years before I got enough money to upgrade it and the case. That fan was LOOOUUUDDDD. I could have hooked up passive water cooling and kept it at a freezing 100c. Replacing the water would have been annoying.

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                        • K
                          kejianshi
                          last edited by Mar 3, 2015, 8:51 PM

                          I have an old amd desktop running for my personal pfsense.  It uses 45w I think and the fan is slow and the case fan is slow…

                          At first this concerned me, but I have the side pulled off every 6 months or so and no dust accumulates in this thing.

                          It just keeps working and the specs are crap.

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                          • H
                            Harvy66
                            last edited by Mar 3, 2015, 9:06 PM

                            In my experience, how close to the ground your device is typically dictates how much dust it will acquire. My firewall is about 2' off the floor and it only has a fine almost non-existent layer of dust, while my desktop tower is right next to it, but only 3"-4" off the ground, and it has dust bunnies that require a Holy Hand Grenade to exorcise.

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                            • K
                              Keljian
                              last edited by Mar 3, 2015, 10:04 PM

                              Ok so to the naysayers:
                              1. I am quoting core temperatures
                              2. We are talking a 35w processor which has a max temp of 105C before throttling.
                              3. Why would I bother with prime? This chip isn't going to see load like that in its current purpose, it will spike but it won't be continuous heavy load.

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                              • K
                                kejianshi
                                last edited by Mar 3, 2015, 11:21 PM

                                Where are you getting your MAX ok operating temperature from?

                                You don't have to purposely stress test the system for it to encounter a race condition all on its on.

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                                • K
                                  Keljian
                                  last edited by Mar 4, 2015, 3:41 AM

                                  Sorry - 100C

                                  Coretemp - TJ Max

                                  Capture.PNG
                                  Capture.PNG_thumb

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                                  • K
                                    kejianshi
                                    last edited by Mar 4, 2015, 3:54 AM

                                    I think I trust the intel chip site more…

                                    40C won't break it but if you are really seeing 60C, I don't think thats great.

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                                    • C
                                      chpalmer
                                      last edited by Mar 4, 2015, 4:08 AM

                                      Without pics it didn't happen!

                                      ;D ;)

                                      Triggering snowflakes one by one..
                                      Intel(R) Core(TM) i5-4590T CPU @ 2.00GHz on an M400 WG box.

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                                      • K
                                        Keljian
                                        last edited by Mar 4, 2015, 4:15 AM

                                        @kejianshi:

                                        I think I trust the intel chip site more…

                                        40C won't break it but if you are really seeing 60C, I don't think thats great.

                                        Urm, it is cooler than with the stock intel cooler…

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                                        • K
                                          kejianshi
                                          last edited by Mar 4, 2015, 5:07 AM

                                          Well - So long as you like it and it works.  Thats all that matters.

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