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Overheating Mecool M8s Pro L and Pro + (and others ?) - Options ???

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    Overheating Mecool M8s Pro L and Pro + (and others ?) - Options ???

    Hi,

    The Pro L runs pretty hot and the Pro + is not far behind.
    If you aren't being too demanding and/or don't live in a hot climate you may not have any problems with your particular box.

    First thing on the Pro+ that you can do is remove the "chrome" embellisher from the lid area.
    You have to remove the rubber pad feet to access the 4 screws that keep on the lid. Same on other models but others don't have the embellisher.
    Removing it and replacing the lid gives a small gap all round that helps a bit but doesn't help very much.
    If your box doesn't have an embellisher then you need to lift the lid with some sticky foam pads/tape or similar (or ??)

    Standing the box vertically helps some more as there is better air flow through the box - sadly lacking in the Mecool design specs !
    Best to stand on the left rear corner for good flow and access to ports - The Diamond look.

    External laptop type coolers or fans can also be used ... and then there are open heart surgery options.

    Removing the heatsink is a process of twisting (a lot of times) until it comes loose. Video part.1
    Replacing with better glue may help a little, but fitting a bigger HS is not much cost and can be very beneficial.
    Standard HS on the + is 22x22x06mm while the L version is 28x28x06mm

    My favourites are
    Pro+ with no extra holes (better still if box kept on edge)
    22x22x15
    40x40x11 (ref. Jancales advice) better with hole(s)
    while - with hole
    28x28x20 - needs a 30mm hole in the lid ! and works exceptionally well due to the chimney effect - flat box, no need to mount vertically.
    37x37x24 - bigger hole - better chimney effect !

    Pro L options
    22x22x15
    40x40x11 has to be fitted carefully at 45 degrees to normal (diamond effect) to get free space due to layout on board - needs hole(s).
    28x28x20 - again with the hole in the lid !! works exceptionally well due to the chimney effect - flat box.
    37x37x24 - bigger hole - better chimney effect !

    If you don't want to or can't remove the Heatsink then a bottom plate is another passive option though to make this work you need to remove the middle of the base to get any free air to cool it.
    Aluminium plate 1.6mm thick and 65x45mm works nicely. NEW Size mounted fore-aft keeps it away from the Wi-fi Bluetooth aerial - when mounted across the box it was too close to the aerial and stopped it working properly.
    Copper is only about 2C better and more expensive - but it does look nice (though no one will see it you will know !).

    Plates were fixed with 2mm thick HY100-2 Thermal Silicone Heatsink Pad 4W/mK - (Gelid 12W/mK is ~6x the price ??)
    Pad is 11C worse than MX2 paste - see SOC T-Pad result below.
    Heatsinks tested with MX2 Paste
    Final fix is with HY910 Thermal Glue or Arctic Silver Epoxy - Note both are permanent !

    Active cooling - Fan (Fitting Video)
    30mm Pi Fan (5V) running at 3.3V from the free UART pads (UART plug is not fitted)
    This is really neat and the best for serious cooling - Power is constant even in OFF Mode so I fitted a micro slide switch in line to switch off when not needed/wanted.
    The fan uses the smallest amount of power and is fully silent, running at 3.3V (listening at over 1 metre away)

    You can of course mix and match or refuse to be drawn into modding and leave well alone.

    Summary of experimental results using Stress CPU App
    Click image for larger version  Name:	XL-Coolers1.5.jpg Views:	1 Size:	126.7 KB ID:	708088

    Updated + 30mm Fan Options
    Click image for larger version  Name:	XL-Graph-Coolers1.5.jpg Views:	1 Size:	149.8 KB ID:	708086

    Extra INFO.
    Pro L with 40x40x11 HS + 30mm Fan (@3.3V) With Lid Hole + CU-BasePlate ~> 48C running StressCPU-100%

    RED is Throttling Level

    22x22x06 ~ 3.1g (2904mm)
    22x22x10 ~ 5.1g (4840)
    22x22x15 ~ 5.5g (7260)
    28x28x11 ~ 7.2g (8624)
    28x28x20 ~ 15.1g (15680)
    40x40x11 ~ 17.7g (17600)
    37x37x24 ~ 31.1g (34656)
    Last edited by P.X; 09-20-2018, 08:29.

    #2
    Some Photos

    Fans and a great passive...
    Right - 30mm fan with std. HS all fits inside nicely (Pi fan 7mm depth)
    Left - Passive 37x37x24
    Rear - 40x40x11mm plus 30mm Pi fan (sticks up a bit ! )
    Click image for larger version  Name:	3All-Best-Active-Passive.jpg Views:	1 Size:	106.2 KB ID:	722349

    More Passive Options with holes ....
    40x40x11 with 38mm Hole (28x28x20 in the back)
    Click image for larger version  Name:	M8S-Pro-CoolFamily1_Pro.jpg Views:	2 Size:	111.2 KB ID:	722348
    Grill over the 30mm hole for the internal Pi fan (Std. HS)
    Click image for larger version  Name:	28-Std+Fan-ProL-1.jpg Views:	2 Size:	100.0 KB ID:	722351
    40x40x11 plus a Pi Fan and grill
    Click image for larger version  Name:	40x40x11+Fan-ProL-1.jpg Views:	1 Size:	167.7 KB ID:	722352
    37x37x24 close up ...
    Click image for larger version  Name:	38x38x20-CloseUp.jpg Views:	2 Size:	102.4 KB ID:	722353
    22x22x15 ---Lifts the lid, no holes needed (but would help! )
    Click image for larger version  Name:	fetch?photoid=680215.jpg Views:	1 Size:	160.5 KB ID:	701692

    22x22x10 - Not really enough (Need to lose the Chrome Embellisher ! )
    Click image for larger version  Name:	fetch?photoid=680214.jpg Views:	1 Size:	157.0 KB ID:	701693
    Air Gap - 22x22x15 - Better without the Chrome Embellisher ?!
    Click image for larger version  Name:	fetch?photoid=680216.jpg Views:	1 Size:	150.3 KB ID:	701694
    -------Fit a Fan !!! Best with a 30mm Hole in the lid !!!!!
    Click image for larger version  Name:	fetch?id=686578.jpg Views:	1 Size:	123.0 KB ID:	701695
    Fit a Base Plate 65x50x1.6mm Aluminium or --------------------
    Click image for larger version  Name:	fetch?id=700132.jpg Views:	1 Size:	180.5 KB ID:	701696
    ----Copper !!!!!
    Click image for larger version  Name:	Copper-Plate1_Pro.jpg Views:	1 Size:	146.3 KB ID:	701704
    28x28x20mm HS - Top Off --------------------------------------------
    Click image for larger version  Name:	image_30430.jpg Views:	1 Size:	176.1 KB ID:	701705
    28x28x20mm ---Top ON ! - No Chrome-- Good Results
    Click image for larger version  Name:	28x28x20-TopOn-1_Pro.jpg Views:	1 Size:	82.0 KB ID:	701703

    40x40x11mm HS - (Jancales Max Mod) ------------------------------
    Click image for larger version  Name:	40x40x10_Pro.jpg Views:	1 Size:	182.6 KB ID:	701702
    -----------28x28x10mm HS - Not really enough
    Click image for larger version  Name:	28x28x10-1_Pro.jpg Views:	2 Size:	158.0 KB ID:	701706

    Pro L with a 40x40x11 HS Mounted Diamond Style
    - Needs lid hole or fan for best results
    Click image for larger version  Name:	ProL-40x40x11-LidOffShot_Pro.jpg Views:	1 Size:	112.7 KB ID:	701902




    OK
    e&oe
    Attached Files
    Last edited by P.X; 05-02-2018, 03:46.

    Comment


      #3
      Thanks for the info. I have my fan sitting on my desk waiting to install into my "L" but right now, I have absolutely NO heat issues..... Of course it is COLD here!!!
      MK818B, T428, ATV 1220, CS918S, TV01, S89H, R89, ADT-1, MK808B Plus, MINIX X8-H Plus, Tronsmart Orion R68

      Comment


        #4
        I would love for some of you guys to try some UHD bluray disc files (uncompressed), those have h265 bitrates of up to 128Mbps. Would love to see temps for uhd x265 rips too. Apparently the beelink gt1 and gt1 ultimate boxes have a heatsink base, would be good to know the temperature difference between those boxes and cheaper boxes like these.

        Comment


          #5
          Originally posted by spaceship9876 View Post
          I would love for some of you guys to try some UHD bluray disc files (uncompressed), those have h265 bitrates of up to 128Mbps. Would love to see temps for uhd x265 rips too. Apparently the beelink gt1 and gt1 ultimate boxes have a heatsink base, would be good to know the temperature difference between those boxes and cheaper boxes like these.
          I have some of those files on my NAS, perhaps I can test tomorrow. I will test running in Kodi and straight from VLC player........ Kodi is the worst player to cause the temp to rise. I have other players and the temp stays about 20 degrees F cooler, when playing verses playing the same video file in Kodi. But then, I guess I would have to test different versions of Kodi to make a blanket statement about Kodi.
          MK818B, T428, ATV 1220, CS918S, TV01, S89H, R89, ADT-1, MK808B Plus, MINIX X8-H Plus, Tronsmart Orion R68

          Comment


            #6
            Interesting to see how you get on with real 4K files.
            I tried do do some testing with a 4K movie file I have, but it is too variable to use for comparisons, hence the use of StressCPU for my tests.

            Kodi did run massively hot especially at 60Hz.

            Cheap box (with L1Widevine) + $5 in parts, and a bit of time & effort - vs - Expensive box


            Take your pick ...
            Last edited by P.X; 01-14-2018, 17:22.

            Comment


              #7
              Noob question: What do you use to monitor the temperature?

              Comment


                #8
                CPU Temperature apk

                https://www.apk4fun.com/apk/50631/

                Comment


                  #9
                  probably the best copper heatsink that might fit, should be excellent: 40x40x11mm 6 - https://www.****.co.uk/itm/Pure-Copp...C/232158745686

                  not sure if this will fit or not: 50x50x15mm 9 - https://www.****.co.uk/itm/Pure-Copper-Heatsink-50x50x15mm-Skiving-Fin-Heat-Sink-Radiator/231869082781

                  eb@y is the website, this forum censors it though.
                  Last edited by spaceship9876; 01-15-2018, 02:45.

                  Comment


                    #10
                    Originally posted by spaceship9876 View Post
                    probably the best heatsink that might fit, probably excellent:
                    6 - https://www.****.co.uk/itm/Pure-Copp...C/232158745686

                    not sure if this will fit or not: 9 -
                    https://www.****.co.uk/itm/Pure-Copper-Heatsink-50x50x15mm-Skiving-Fin-Heat-Sink-Radiator/231869082781
                    Very Nice

                    50x50 is too big - 15mm high is OK, with a little lid-lift !

                    40x40x11 black aluminium HS is 2 for a from China (~2 each from a UK source)

                    Comment


                      #11
                      Originally posted by P.X View Post
                      Some Photos

                      ....

                      Pro L with a 40x40x11 HS Mounted Diamond Style
                      Click image for larger version

Name:	ProL-40x40x11-LidOffShot_Pro.jpg
Views:	1
Size:	112.7 KB
ID:	701902

                      OK
                      e&oe
                      Added to Post 2

                      Diamond Style Pro L 40x40x11

                      Comment


                        #12
                        Originally posted by spaceship9876 View Post
                        I would love for some of you guys to try some UHD bluray disc files (uncompressed), those have h265 bitrates of up to 128Mbps. Would love to see temps for uhd x265 rips too. Apparently the beelink gt1 and gt1 ultimate boxes have a heatsink base, would be good to know the temperature difference between those boxes and cheaper boxes like these.
                        The 4K test file I have wouldn't play without major smearing in V03xx FW with same Kodi 17.6.

                        Pro+ (latest V09xx ATV Magendanz) Kodi (17.6)
                        - 4K Video H264 24fps @60Hz = 80/81C ++ Throttling

                        Click image for larger version

Name:	22x22x10 HS . Kodi-4K . 81C ++Throttling.jpg
Views:	2
Size:	156.2 KB
ID:	702056

                        Running Kodi on box set to 60Hz refresh rate logging shows it mostly hits that target.
                        Runs cooler when set to 50Hz refresh but strangely gets very random with fps around 38fps (33-40 very variable).
                        Same for Pro L Kodi

                        SPMC logging shows it sets fps to file data (e.g.24fps) for both 50 and 60 Hz refresh setting.

                        The only time I got 24p refresh rate to work by using Amlogic tool (works but black screens on re-boot), the image jerked badly in Kodi and frame rate dropped to about 16fps

                        My Box+AV Amp combo mostly Black Screens at 24p (even with older FW on Pro+ as suggested elsewhere)

                        Pro L (Cu-Plate + 40x40x11HS)
                        (latest V09xx ATV Magendanz) Kodi (17.6)
                        - 4K Video H264 24fps @60Hz =

                        Click image for larger version

Name:	ProL-40x40x11+CU-Kodi.4K.24.60Hz-65C-FullPower.jpg
Views:	2
Size:	181.0 KB
ID:	702057

                        Pro L gets to Max throttling temp. without extra cooling.
                        Lid Off helps but a bigger HS helps more ...

                        Reducing refresh rate to 50Hz helps temps but 60Hz looks best to me for 24fps source (?) while 50Hz suits UK 25/50fps source material !!!

                        Comment


                          #13
                          I have 4x 4K test sample files for higher bit rates (Jellyfish can be downloaded from web) but I can't see how to loop them.
                          140mbps x264 and x265
                          250mbps x264 and x265
                          Only the HEVC x265 140mbps file actually plays properly and only manages to get Audio (Dolby TrueHD 5.1) playing via Kodi (Pro+).

                          Have to move to internal ROM to get better rates as my external SD is too slow !
                          Overall ....

                          Kodi manages x265 HEVC better than SPMC
                          SPMC manages x264 slightly better than Kodi - but both stutter/smear/jerk !
                          140mbps HEVC @60Hz Kodi is best rate playable with Pro + or Pro L
                          250mbps HEVC @50Hz plays OK in Kodi on Pro + but jerks on Pro L ???
                          Pro L only outputs Stereo on DolbyTrueHD track even though all set the same ?????
                          Last edited by P.X; 01-16-2018, 04:48.

                          Comment


                            #14
                            you said the temp of kodi went down by 10c when running tv at 50hz, you didn't say temps of spmc when running at 60hz or 50hz. You said that playing those 140/250mbps bitrates is jerky/smeary, was that from internal storage?

                            Comment


                              #15
                              Originally posted by spaceship9876 View Post
                              you said the temp of kodi went down by 10c when running tv at 50hz, you didn't say temps of spmc when running at 60hz or 50hz. You said that playing those 140/250mbps bitrates is jerky/smeary, was that from internal storage?
                              Yes from internal storage.

                              Haven't managed to test every combo yet !!

                              Comment

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