High GPU diode temp and high fan RPM

Question

Ever since updating to high sierra recently (I know, slow adopter), I noticed increased high fan usage and high gpu diode temperatures when browsing some web pages. io9 pages can push the gpu diode to 95c with associated high fan rpms (2500 rpm). When I check the activity monitor, there&#x27;s no CPU load over 5 to 10%.Specifically I&#x27;m running:OS 10.12.6iMac retina 27" (late 2014)4Ghz intel core i716GB memoryAMD radeon R9 M295X with 4GBI&#x27;ve reset the pram and SMC (multiple times in a session to make sure it took)One thing I know for sure, it wasn&#x27;t operating like this under sierra.Any thoughts or ideas would be most appreciated

David Sirola · Answer

Thanks RK...EtreCheck version: 3.4.5 (455)Report generated 2017-10-05 16:20:09Download EtreCheck from https://etrecheck.comRuntime: 2:06Performance: ExcellentClick the [Lookup] links for more information from Apple Support Communities.Click the [Details] links for more information about that line.Click the [Clean up] link to delete unused files.Problem: Other problemDescription:HIgh GPU diode and high fan useageHardware Information:ⓘ    iMac (Retina 5K, 27-inch, Late 2014)     [Technical Specifications] - [User Guide] - [Warranty &amp; Service]    iMac - model: iMac15,1    1 4 GHz Intel Core i7 (i7-4790K) CPU: 4-core    16 GB RAM Upgradeable - [Instructions]        BANK 0/DIMM0            4 GB DDR3 1600 MHz ok        BANK 1/DIMM0            4 GB DDR3 1600 MHz ok        BANK 0/DIMM1            4 GB DDR3 1600 MHz ok        BANK 1/DIMM1            4 GB DDR3 1600 MHz ok    Handoff/Airdrop2: supported    Wireless:  en1: Unknown    iCloud Quota: 5.00 GB availableVideo Information:ⓘ    AMD Radeon R9 M295X - VRAM: 4096 MB        iMac 5120 x 2880Disk Information:ⓘ    APPLE SSD SD0128F disk1: (121.33 GB) (Solid State - TRIM: Yes)    [Show SMART report]        EFI (disk1s1 - MS-DOS FAT32) &lt;not mounted&gt;  [EFI]: 210 MB         (disk1s2) &lt;not mounted&gt;  [CoreStorage Container]: 120.99 GB        Boot OS X (disk1s3 - Journaled HFS+) &lt;not mounted&gt; : 134 MB     APPLE HDD ST1000DM003 disk0: (1 TB) (Rotational)    [Show SMART report]        EFI (disk0s1 - MS-DOS FAT32) &lt;not mounted&gt;  [EFI]: 210 MB         (disk0s2) &lt;not mounted&gt;  [CoreStorage Container]: 755.56 GB        Recovery HD (disk0s3 - Journaled HFS+) &lt;not mounted&gt;  [Recovery]: 650 MB         Big Boy (disk0s4 - Journaled HFS+) /Volumes/Big Boy : 243.65 GB (148.89 GB free)USB Information:ⓘ     USB30Bus         Newer_Technology miniStack             chnology disk3: (2 TB)                EFI (disk3s1 - MS-DOS FAT32) &lt;not mounted&gt;  [EFI]: 210 MB                 Time Machine (disk3s2 - Journaled HFS+) /Volumes/Time Machine : 1.50 TB (279.14 GB free)                Space (disk3s3 - Journaled HFS+) /Volumes/Space : 497.71 GB (413.40 GB free)        Apple Inc. BRCM20702 Hub             Apple Inc. Bluetooth USB Host Controller         Apple Inc. FaceTime HD Camera (Built-in)          hub_device         Apple, Inc. Keyboard Hub             Logitech Logitech USB Headset             Apple Inc. Apple Keyboard Thunderbolt Information:ⓘ    Apple Inc. thunderbolt_busVirtual disks:ⓘ    Mongo (disk2 - Journaled HFS+) /  [Startup]: 870.70 GB (442.60 GB free)        Physical disk: disk1s2 120.99 GB Online        Physical disk: disk0s2 755.56 GB OnlineSystem Software:ⓘ    macOS Sierra  10.12.6 (16G29) - Time since boot: about one day Gatekeeper:ⓘ    Mac App Store and identified developersClean up:ⓘ    ~/Library/LaunchAgents/com.apple.MobileMeSyncClientAgent.plist        /System/Library/PrivateFrameworks/DotMacSyncManager.framework/Resources/mobilem esyncclient --sync --periodic        Executable not found!    One orphan file found. [Clean up]Kernel Extensions:ⓘ        /Applications/Radio Silence.app    [not loaded]    com.radiosilenceapp.nke.filter (1.0 - SDK 10.7) [Lookup]        /System/Library/Extensions    [not loaded]    com.ATITechnologiesInc.TVOut (2.4.0) [Lookup]    [not loaded]    com.Symantec.kext.DeleteTrap (8.0.2) [Lookup]    [not loaded]    com.Symantec.kext.KTUM (9.0.1) [Lookup]    [not loaded]    com.Symantec.kext.SymEvent (1.0.4) [Lookup]    [not loaded]    com.Symantec.kext.SymOSXKernelUtilities (2.0) [Lookup]    [not loaded]    com.symantec.kext.symfs (8.0.1) [Lookup]System Launch Agents:ⓘ    [not loaded]    7 Apple tasks    [loaded]    166 Apple tasks    [running]    112 Apple tasksSystem Launch Daemons:ⓘ    [not loaded]    41 Apple tasks    [loaded]    173 Apple tasks    [running]    104 Apple tasksLaunch Agents:ⓘ    [not loaded]    com.adobe.AAM.Updater-1.0.plist (Adobe Systems, Inc. - installed 2014-12-15) [Lookup]    [loaded]    com.adobe.CS4ServiceManager.plist (? 70f708f7 c1ab4162 - installed 2014-12-06) [Lookup]    [loaded]    com.google.keystone.agent.plist (Google, Inc. - installed 2017-07-10) [Lookup]    [loaded]    com.oracle.java.Java-Updater.plist (? 3762e6a9 72ac4dde - installed 2017-07-31) [Lookup]    [loaded]    com.radiosilenceapp.agent.plist (? d3b2fc0c 31173834 - installed 2014-12-14) [Lookup]    [loaded]    com.xrite.device.softwareupdate.plist (X-Rite, Incorporated - installed 2016-10-22) [Lookup]    [loaded]    org.macosforge.xquartz.startx.plist (Apple Inc. - XQuartz - installed 2014-08-11) [Lookup]Launch Daemons:ⓘ    [loaded]    com.adobe.SwitchBoard.plist (? 68cad67 0 - installed 2014-12-14) [Lookup]    [loaded]    com.adobe.fpsaud.plist (? 2afb3af7 4898e928 - installed 2017-08-29) [Lookup]    [not loaded]    com.apple.installer.cleanupinstaller.plist (? ? ? - installed 2017-08-12)    [loaded]    com.google.keystone.daemon.plist (Google, Inc. - installed 2017-07-26) [Lookup]    [loaded]    com.microsoft.autoupdate.helper.plist (Microsoft Corporation - installed 2017-04-18) [Lookup]    [loaded]    com.microsoft.office.licensing.helper.plist (? 6d8cb30e cf9ce3fb - installed 2014-02-26) [Lookup]    [loaded]    com.oracle.java.Helper-Tool.plist (Shell Script e3fefdd2 - installed 2017-07-22) [Lookup]    [failed]    com.radiosilenceapp.nke.plist (Apple, Inc. - installed 2017-07-15)    [running]    com.xrite.device.xrdd.plist (X-Rite, Incorporated - installed 2015-09-18) [Lookup]    [loaded]    org.macosforge.xquartz.privileged_startx.plist (Apple Inc. - XQuartz - installed 2014-08-11) [Lookup]User Launch Agents:ⓘ    [loaded]    com.adobe.ARM.[...].plist (? 56ebbe7d b8887e79 - installed 2013-05-22) [Lookup]    [failed]    com.apple.MobileMeSyncClientAgent.plist (? ? ? - installed 2011-04-07) - /System/Library/PrivateFrameworks/DotMacSyncManager.framework/Resources/mobilem esyncclient: Executable not found!    [failed]    com.apple.SafariBookmarksSyncer.plist (? ? ? - installed 2010-05-13)    [loaded]    com.bluejeans.app.detector.plist (Shell Script 69999cc8 - installed 2017-10-04) [Lookup]    [loaded]    com.citrixonline.GoToMeeting.G2MUpdate.plist (Citrix Online LLC - installed 2016-07-20) [Lookup]    [loaded]    com.dropbox.DropboxMacUpdate.agent.plist (Dropbox, Inc. - installed 2017-08-10) [Lookup]    [loaded]    com.skype.skype.shareagent.plist (Skype Communications S.a.r.l - installed 2017-10-04) [Lookup]    [loaded]    com.valvesoftware.steamclean.plist (? b38a215c f2e42815 - installed 2010-12-28) [Lookup]User Login Items:ⓘ    FaceTime    Application         (/Applications/FaceTime.app)    AdobeResourceSynchronizer    Application         (/Applications/Adobe Acrobat 8 Professional/Adobe Acrobat Professional.app/Contents/Support/AdobeResourceSynchronizer.app)    com.adobe.SwitchBoard.monitor.plist    MachInit - Hidden         (/etc/mach_init_per_user.d/com.adobe.SwitchBoard.monitor.plist)    Mach Init items are deprecatedInternet Plug-ins:ⓘ    o1dbrowserplugin: 5.41.3.0 (installed 2016-02-19) [Lookup]    Flip4Mac WMV Plugin: 2.3.1.2 (installed 2009-11-03) [Lookup]    Silverlight: 4.0.60831.0 (installed 2011-11-22) [Lookup]    FlashPlayer-10.6: 27.0.0.130 (installed 2017-09-16) [Lookup]    DivXBrowserPlugin: 1.4 (installed 2008-01-07) [Lookup]    QuickTime Plugin: 7.7.3 (installed 2017-07-15)    Flash Player: 27.0.0.130 (installed 2017-09-16) [Lookup]    googletalkbrowserplugin: 5.41.3.0 (installed 2015-12-11) [Lookup]    SharePointBrowserPlugin: 14.7.3 (installed 2017-04-18) [Lookup]    AdobePDFViewer: 10.1.1 (installed 2014-12-14) [Lookup]    iPhotoPhotocast: 7.0 (installed 2010-03-30)    ContentUploaderPlugin: 1.2 (installed 2008-01-07) [Lookup]    JavaAppletPlugin: Java 8 Update 144 build 01 (installed 2017-07-31) Check versionUser internet Plug-ins:ⓘ    CitrixOnlineWebDeploymentPlugin: 1.0.105 (installed 2013-05-14) [Lookup]    Move_Media_Player: npmnqmp 071101000050 (installed 2008-09-11) [Lookup]    WebEx64: 1.0 (installed 2016-02-28) [Lookup]3rd Party Preference Panes:ⓘ    Flash Player (installed 2017-08-29) [Lookup]    Java (installed 2017-07-31) [Lookup]Time Machine:ⓘ    Skip System Files: NO    Mobile backups: OFF    Auto backup: YES    Volumes being backed up:        Mongo: Disk size: 870.70 GB Disk used: 428.10 GB        Space: Disk size: 497.71 GB Disk used: 84.30 GB    Destinations:        Time Machine [Local]         Total size: 1.50 TB         Total number of backups: 253         Oldest backup: 7/2/13, 11:23 PM         Last backup: 10/5/17, 4:03 PM         Size of backup disk: Too small            Backup size 1.50 TB &lt; (Disk used 512.40 GB X 3)Top Processes by CPU:ⓘ        10%   WindowServer         4%   mdworker         3%   kernel_task         2%   mdworker         1%   quicklookdTop Processes by Memory:ⓘ    1.41 GB   kernel_task    907 MB    SketchUp    601 MB    mds_stores    314 MB    Finder    287 MB    DockTop Processes by Network Use:ⓘ    Input     Output    Process name    24 MB     85 KB     com.apple.WebKit.Networking    250 KB    116 KB    mDNSResponder    143 KB    206 KB    Skype    10 KB     15 KB     apsd    14 KB     5 KB      imagentTop Processes by Energy Use:ⓘ      8.54 xrdd      7.42 WindowServer      2.26 com.apple.WebKit.WebContent      1.18 coreaudiodVirtual Memory Information:ⓘ    8.43 GB   Available RAM    1.88 GB   Free RAM    7.57 GB   Used RAM    6.56 GB   Cached files    0 B       Swap UsedSoftware installs:ⓘ    Adobe Flash Player:  (installed 2017-09-16)    GoPro VR Player 3.0:  (installed 2017-09-21)    Autodesk AutoCAD LT 2017 for Mac:  (installed 2017-09-22)    Cobalt v9 SP0:  (installed 2017-09-28)    EPSON Scan:  (installed 2017-09-29)    Install information may not be complete.Diagnostics Information:ⓘ    2017-10-04 19:08:16    com.apple.WebKit.WebContent High CPU use [Open] [Details]    2017-10-04 13:22:32    Firefox.app High CPU use [Open] [Details]

rkaufmann87 · Answer

David,Your system does have some problems I will list them for  you.First, I want to point out that Mac OS was designed from it&#x27;s very beginnings to be EXTREMELY secure. I suspect you may have come from a MS Windows machine where using Antivirus software is the norm. With a Mac they are 100% unnecessary and most cases they tend to create more problems than they solve. You have one of the worst offenders (Symantec) installed. I recommend locating the uninstall procedures from the developers and uninstall your Symantec AV immediately.  Never install any AV, cleaning, or any other third party maintenance apps on a Mac. At best they are unnecessary and at worst they can damage Mac OS.Next, over the years you have installed a number of Internet Plugins, I suspect many are not necessary and should be uninstalled. Please look over your report for what you have installed and decide what can go. Instructions for removing them are in Safari 8 (Yosemite): If you need to remove a plug-inYou also have an orphan file, please review your report and click the link to remove it.Once you have done all of the above restart the computer in Safe Mode to clear the caches. Then reset the SMC and PRAM while ALL peripherals (EHDs, scanners, printers, etc..) are disconnected. This only applies to USB, Firewire and other cable connected devices. After the resets have been done you can re-connect each.Then check to see how your computer is now operating.

David Sirola · Answer

I&#x27;ve removed some additional plug ins, as well as un-installing flash. I&#x27;ve seen a 11º reduction in GPU temps 97-86 but an increase in CPU (which seems fine). Some progress and will continue to strip out plug ins.Many thanks.

David Sirola · Answer

Just off the phone with apple, and they had me re-install sierra with no effect. While they want me to bring in the machine, I&#x27;m unconvinced it&#x27;s hardware and not software. I can run the GPU diode up to near 100º C under safari by going to and running content from 1 or both pages (iheart radio and go90 video - not isolated to these sites and each pushes GPU to over 97º). But under chrome, while running both pages simultaneously, the GPU never goes above 70º and CPU use is below 15% for all associated processes. I think the short term answer is chrome. I&#x27;d rather be running safari, but I can&#x27;t imagine 100º C temps are good for the long term health of what was a very expensive machine. Thanks for the help.

rkaufmann87 · Answer

David,HS will not make any changes that would cause this behavior. I&#x27;d recommend following the instructions below.Please post an EtreCheckreport of your system. We can then look for obvious issues. Please click the link, download the app and run the report. Once you have the report, please copy and paste it as your reply to this post.

rkaufmann87 · Answer

Please post a fresh EtreCheck report. Mac OS should not increase temps, however it&#x27;s not unknown for hardware to break during a major upgrade like a OS upgrade. Let&#x27;s first review your new EtreCheck report and then decide what to do next.

David Sirola · Answer

Again, many thanks for taking a look at this for me. I assume you don&#x27;t think the high gpu diode temp is normal either.EtreCheck version: 3.4.5 (455)Report generated 2017-10-06 12:45:36Download EtreCheck from https://etrecheck.comRuntime: 1:53Performance: ExcellentClick the [Lookup] links for more information from Apple Support Communities.Click the [Details] links for more information about that line.Problem: No problem - just checkingHardware Information:ⓘ    iMac (Retina 5K, 27-inch, Late 2014)     [Technical Specifications] - [User Guide] - [Warranty &amp; Service]    iMac - model: iMac15,1    1 4 GHz Intel Core i7 (i7-4790K) CPU: 4-core    16 GB RAM Upgradeable - [Instructions]        BANK 0/DIMM0            4 GB DDR3 1600 MHz ok        BANK 1/DIMM0            4 GB DDR3 1600 MHz ok        BANK 0/DIMM1            4 GB DDR3 1600 MHz ok        BANK 1/DIMM1            4 GB DDR3 1600 MHz ok    Handoff/Airdrop2: supported    Wireless:  en1: Unknown    iCloud Quota: 5.00 GB availableVideo Information:ⓘ    AMD Radeon R9 M295X - VRAM: 4096 MB        iMac 5120 x 2880Disk Information:ⓘ    APPLE SSD SD0128F disk0: (121.33 GB) (Solid State - TRIM: Yes)    [Show SMART report]        EFI (disk0s1 - MS-DOS FAT32) &lt;not mounted&gt;  [EFI]: 210 MB         (disk0s2) &lt;not mounted&gt;  [CoreStorage Container]: 120.99 GB        Boot OS X (disk0s3 - Journaled HFS+) &lt;not mounted&gt; : 134 MB     APPLE HDD ST1000DM003 disk1: (1 TB) (Rotational)    [Show SMART report]        EFI (disk1s1 - MS-DOS FAT32) &lt;not mounted&gt;  [EFI]: 210 MB         (disk1s2) &lt;not mounted&gt;  [CoreStorage Container]: 755.56 GB        Recovery HD (disk1s3 - Journaled HFS+) &lt;not mounted&gt;  [Recovery]: 650 MB         Big Boy (disk1s4 - Journaled HFS+) /Volumes/Big Boy : 243.65 GB (148.89 GB free)USB Information:ⓘ     USB30Bus         Newer_Technology miniStack             chnology disk3: (2 TB)                EFI (disk3s1 - MS-DOS FAT32) &lt;not mounted&gt;  [EFI]: 210 MB                 Time Machine (disk3s2 - Journaled HFS+) /Volumes/Time Machine : 1.50 TB (278.82 GB free)                Space (disk3s3 - Journaled HFS+) /Volumes/Space : 497.71 GB (413.40 GB free)        Apple Inc. BRCM20702 Hub             Apple Inc. Bluetooth USB Host Controller         Apple Inc. FaceTime HD Camera (Built-in)          hub_device         Apple, Inc. Keyboard Hub             Logitech Logitech USB Headset             Apple Inc. Apple Keyboard Thunderbolt Information:ⓘ    Apple Inc. thunderbolt_busVirtual disks:ⓘ    Mongo (disk2 - Journaled HFS+) /  [Startup]: 870.70 GB (443.21 GB free)        Physical disk: disk0s2 120.99 GB Online        Physical disk: disk1s2 755.56 GB OnlineSystem Software:ⓘ    macOS Sierra  10.12.6 (16G29) - Time since boot: less than an hourGatekeeper:ⓘ    Mac App Store and identified developersKernel Extensions:ⓘ        /Applications/Radio Silence.app    [not loaded]    com.radiosilenceapp.nke.filter (1.0 - SDK 10.7) [Lookup]        /System/Library/Extensions    [not loaded]    com.ATITechnologiesInc.TVOut (2.4.0) [Lookup]System Launch Agents:ⓘ    [not loaded]    7 Apple tasks    [loaded]    178 Apple tasks    [running]    100 Apple tasksSystem Launch Daemons:ⓘ    [not loaded]    41 Apple tasks    [loaded]    178 Apple tasks    [running]    99 Apple tasksLaunch Agents:ⓘ    [not loaded]    com.adobe.AAM.Updater-1.0.plist (Adobe Systems, Inc. - installed 2014-12-15) [Lookup]    [loaded]    com.adobe.CS4ServiceManager.plist (? 70f708f7 c1ab4162 - installed 2014-12-06) [Lookup]    [loaded]    com.google.keystone.agent.plist (Google, Inc. - installed 2017-07-10) [Lookup]    [loaded]    com.oracle.java.Java-Updater.plist (? 3762e6a9 72ac4dde - installed 2017-07-31) [Lookup]    [loaded]    com.radiosilenceapp.agent.plist (? d3b2fc0c 31173834 - installed 2014-12-14) [Lookup]    [loaded]    com.xrite.device.softwareupdate.plist (X-Rite, Incorporated - installed 2016-10-22) [Lookup]    [loaded]    org.macosforge.xquartz.startx.plist (Apple Inc. - XQuartz - installed 2014-08-11) [Lookup]Launch Daemons:ⓘ    [loaded]    com.adobe.SwitchBoard.plist (? 68cad67 0 - installed 2014-12-14) [Lookup]    [loaded]    com.adobe.fpsaud.plist (? 2afb3af7 4898e928 - installed 2017-08-29) [Lookup]    [not loaded]    com.apple.installer.cleanupinstaller.plist (? ? ? - installed 2017-08-12)    [loaded]    com.google.keystone.daemon.plist (Google, Inc. - installed 2017-07-26) [Lookup]    [loaded]    com.microsoft.autoupdate.helper.plist (Microsoft Corporation - installed 2017-04-18) [Lookup]    [loaded]    com.microsoft.office.licensing.helper.plist (? 6d8cb30e cf9ce3fb - installed 2014-02-26) [Lookup]    [loaded]    com.oracle.java.Helper-Tool.plist (Shell Script e3fefdd2 - installed 2017-07-22) [Lookup]    [failed]    com.radiosilenceapp.nke.plist (Apple, Inc. - installed 2017-07-15)    [running]    com.xrite.device.xrdd.plist (X-Rite, Incorporated - installed 2015-09-18) [Lookup]    [loaded]    org.macosforge.xquartz.privileged_startx.plist (Apple Inc. - XQuartz - installed 2014-08-11) [Lookup]User Launch Agents:ⓘ    [loaded]    com.adobe.ARM.[...].plist (? 56ebbe7d b8887e79 - installed 2013-05-22) [Lookup]    [loaded]    com.apple.SafariBookmarksSyncer.plist (? ? ? - installed 2010-05-13)    [running]    com.bluejeans.app.detector.plist (Shell Script 69999cc8 - installed 2017-10-04) [Lookup]    [loaded]    com.citrixonline.GoToMeeting.G2MUpdate.plist (Citrix Online LLC - installed 2016-07-20) [Lookup]    [loaded]    com.dropbox.DropboxMacUpdate.agent.plist (Dropbox, Inc. - installed 2017-08-10) [Lookup]    [loaded]    com.skype.skype.shareagent.plist (Skype Communications S.a.r.l - installed 2017-10-04) [Lookup]    [loaded]    com.valvesoftware.steamclean.plist (? b38a215c f2e42815 - installed 2010-12-28) [Lookup]User Login Items:ⓘ    FaceTime    Application         (/Applications/FaceTime.app)    AdobeResourceSynchronizer    Application         (/Applications/Adobe Acrobat 8 Professional/Adobe Acrobat Professional.app/Contents/Support/AdobeResourceSynchronizer.app)    com.adobe.SwitchBoard.monitor.plist    MachInit - Hidden         (/etc/mach_init_per_user.d/com.adobe.SwitchBoard.monitor.plist)    Mach Init items are deprecatedInternet Plug-ins:ⓘ    o1dbrowserplugin: 5.41.3.0 (installed 2016-02-19) [Lookup]    Flip4Mac WMV Plugin: 2.3.1.2 (installed 2009-11-03) [Lookup]    Silverlight: 4.0.60831.0 (installed 2011-11-22) [Lookup]    FlashPlayer-10.6: 27.0.0.130 (installed 2017-09-16) [Lookup]    DivXBrowserPlugin: 1.4 (installed 2008-01-07) [Lookup]    QuickTime Plugin: 7.7.3 (installed 2017-07-15)    Flash Player: 27.0.0.130 (installed 2017-09-16) [Lookup]    googletalkbrowserplugin: 5.41.3.0 (installed 2015-12-11) [Lookup]    SharePointBrowserPlugin: 14.7.3 (installed 2017-04-18) [Lookup]    AdobePDFViewer: 10.1.1 (installed 2014-12-14) [Lookup]    iPhotoPhotocast: 7.0 (installed 2010-03-30)    ContentUploaderPlugin: 1.2 (installed 2008-01-07) [Lookup]    JavaAppletPlugin: Java 8 Update 144 build 01 (installed 2017-07-31) Check versionUser internet Plug-ins:ⓘ    CitrixOnlineWebDeploymentPlugin: 1.0.105 (installed 2013-05-14) [Lookup]    Move_Media_Player: npmnqmp 071101000050 (installed 2008-09-11) [Lookup]    WebEx64: 1.0 (installed 2016-02-28) [Lookup]3rd Party Preference Panes:ⓘ    Flash Player (installed 2017-08-29) [Lookup]    Java (installed 2017-07-31) [Lookup]Time Machine:ⓘ    Skip System Files: NO    Mobile backups: OFF    Auto backup: YES    Volumes being backed up:        Mongo: Disk size: 870.70 GB Disk used: 427.49 GB        Space: Disk size: 497.71 GB Disk used: 84.30 GB    Destinations:        Time Machine [Local]         Total size: 1.50 TB         Total number of backups: 254         Oldest backup: 7/2/13, 11:23 PM         Last backup: 10/6/17, 11:09 AM         Size of backup disk: Too small            Backup size 1.50 TB &lt; (Disk used 511.79 GB X 3)Top Processes by CPU:ⓘ         4%   mds         3%   backupd         3%   WindowServer         3%   kernel_task         1%   mdworkerTop Processes by Memory:ⓘ    1.11 GB   kernel_task    230 MB    Mail    182 MB    com.apple.WebKit.WebContent    173 MB    mds_stores    144 MB    WindowServerTop Processes by Network Use:ⓘ    Input     Output    Process name    22 KB     20 KB     mDNSResponder    8 KB      6 KB      apsd    10 KB     2 KB      imagent    5 KB      3 KB      assistantd    1 KB      776 B     netbiosdTop Processes by Energy Use:ⓘ     10.46 xrdd      5.22 WindowServer      4.56 backupd      3.22 Activity MonitorVirtual Memory Information:ⓘ    11.81 GB  Available RAM    9.03 GB   Free RAM    4.19 GB   Used RAM    2.79 GB   Cached files    0 B       Swap UsedSoftware installs:ⓘ    Adobe Flash Player:  (installed 2017-09-16)    GoPro VR Player 3.0:  (installed 2017-09-21)    Autodesk AutoCAD LT 2017 for Mac:  (installed 2017-09-22)    Cobalt v9 SP0:  (installed 2017-09-28)    EPSON Scan:  (installed 2017-09-29)    Install information may not be complete.Diagnostics Information:ⓘ    2017-10-06 12:03:00    Last shutdown cause: 0 - Power loss    2017-10-05 17:30:22    Firefox.app High CPU use [Open] [Details]    2017-10-04 19:08:16    com.apple.WebKit.WebContent High CPU use [Open] [Details]Files deleted by EtreCheck:ⓘ    2017-10-05 17:10:06 - ~/Library/LaunchAgents/com.apple.MobileMeSyncClientAgent.plist - Unknown

rkaufmann87 · Answer

I see a lot of launch agents, look in System Preferences - Users &amp; Groups - highlight your user name and click on the tab for apps that launch on startup. See what you can live without.

den.thed · Answer

Radio Silence (whatever that is) has Failed.To get rid of it, see step 5 at  &gt; https://radiosilenceapp.com/private-eye/faqIt may not be the only reason that FireFox and your WebKit are running High CPU, but it surly is not helping.In addition, you still have not removed the multitude of Internet Plug-Ins like rkaufmann87 suggested above.

David Sirola · Answer

While some issues have lessened, the problem with high GPU diode temps and safari has not been eliminated.Safari GPU diode temps76º browsing facebook82º browsing NY Times90º iheart.com (radio)98º go90.com watching video / 40% of 5K screen widthChrome82º go90.com videoFirefox88º go90 video76º iheart.com radioSomething is going on with safari. While the easy answer is to switch to chrome, I like safari as my everyday browser and use chrome for secure payments and such. Entre-check followsThanksEtreCheck version: 3.4.6 (460)Report generated 2017-10-10 14:26:01Download EtreCheck from https://etrecheck.comRuntime: 1:46Performance: ExcellentClick the [Lookup] links for more information from Apple Support Communities.Click the [Details] links for more information about that line.Problem: Other problemHardware Information:ⓘ    iMac (Retina 5K, 27-inch, Late 2014)     [Technical Specifications] - [User Guide] - [Warranty &amp; Service]    iMac - model: iMac15,1    1 4 GHz Intel Core i7 (i7-4790K) CPU: 4-core    16 GB RAM Upgradeable - [Instructions]        BANK 0/DIMM0            4 GB DDR3 1600 MHz ok        BANK 1/DIMM0            4 GB DDR3 1600 MHz ok        BANK 0/DIMM1            4 GB DDR3 1600 MHz ok        BANK 1/DIMM1            4 GB DDR3 1600 MHz ok    Handoff/Airdrop2: supported    Wireless:  en1: Unknown    iCloud Quota: 5.00 GB availableVideo Information:ⓘ    AMD Radeon R9 M295X - VRAM: 4096 MB        iMac 5120 x 2880Disk Information:ⓘ    APPLE SSD SD0128F disk1: (121.33 GB) (Solid State - TRIM: Yes)    [Show SMART report]        EFI (disk1s1 - MS-DOS FAT32) &lt;not mounted&gt;  [EFI]: 210 MB         (disk1s2) &lt;not mounted&gt;  [CoreStorage Container]: 120.99 GB        Boot OS X (disk1s3 - Journaled HFS+) &lt;not mounted&gt; : 134 MB     APPLE HDD ST1000DM003 disk0: (1 TB) (Rotational)    [Show SMART report]        EFI (disk0s1 - MS-DOS FAT32) &lt;not mounted&gt;  [EFI]: 210 MB         (disk0s2) &lt;not mounted&gt;  [CoreStorage Container]: 755.56 GB        Recovery HD (disk0s3 - Journaled HFS+) &lt;not mounted&gt;  [Recovery]: 650 MB         Big Boy (disk0s4 - Journaled HFS+) /Volumes/Big Boy : 243.65 GB (148.89 GB free)USB Information:ⓘ     USB30Bus         Newer_Technology miniStack             chnology disk3: (2 TB)                EFI (disk3s1 - MS-DOS FAT32) &lt;not mounted&gt;  [EFI]: 210 MB                 Time Machine (disk3s2 - Journaled HFS+) /Volumes/Time Machine : 1.50 TB (277.20 GB free)                Space (disk3s3 - Journaled HFS+) /Volumes/Space : 497.71 GB (413.40 GB free)        Apple Inc. BRCM20702 Hub             Apple Inc. Bluetooth USB Host Controller         Apple Inc. FaceTime HD Camera (Built-in)          hub_device         Apple, Inc. Keyboard Hub             Apple Inc. Apple Keyboard Thunderbolt Information:ⓘ    Apple Inc. thunderbolt_busVirtual disks:ⓘ    Mongo (disk2 - Journaled HFS+) /  [Startup]: 870.70 GB (441.63 GB free)        Physical disk: disk1s2 120.99 GB Online        Physical disk: disk0s2 755.56 GB OnlineSystem Software:ⓘ    macOS Sierra  10.12.6 (16G29) - Time since boot: less than an hourGatekeeper:ⓘ    Mac App Store and identified developersKernel Extensions:ⓘ        /System/Library/Extensions    [not loaded]    com.ATITechnologiesInc.TVOut (2.4.0) [Lookup]System Launch Agents:ⓘ    [not loaded]    7 Apple tasks    [loaded]    180 Apple tasks    [running]    98 Apple tasksSystem Launch Daemons:ⓘ    [not loaded]    40 Apple tasks    [loaded]    177 Apple tasks    [running]    101 Apple tasksLaunch Agents:ⓘ    [loaded]    com.adobe.CS4ServiceManager.plist (? 70f708f7 c1ab4162 - installed 2014-12-06) [Lookup]    [loaded]    com.google.keystone.agent.plist (Google, Inc. - installed 2017-07-10) [Lookup]    [not loaded]    com.oracle.java.Java-Updater.plist (? 0 ? - installed (null)) [Lookup]    [loaded]    com.xrite.device.softwareupdate.plist (X-Rite, Incorporated - installed 2016-10-22) [Lookup]    [loaded]    org.macosforge.xquartz.startx.plist (Apple Inc. - XQuartz - installed 2014-08-11) [Lookup]Launch Daemons:ⓘ    [loaded]    com.adobe.SwitchBoard.plist (? 68cad67 0 - installed 2014-12-14) [Lookup]    [not loaded]    com.apple.installer.cleanupinstaller.plist (? ? ? - installed 2017-08-12)    [loaded]    com.google.keystone.daemon.plist (Google, Inc. - installed 2017-07-26) [Lookup]    [loaded]    com.microsoft.autoupdate.helper.plist (Microsoft Corporation - installed 2017-04-18) [Lookup]    [loaded]    com.microsoft.office.licensing.helper.plist (? 6d8cb30e cf9ce3fb - installed 2014-02-26) [Lookup]    [not loaded]    com.oracle.java.Helper-Tool.plist (? 0 ? - installed (null)) [Lookup]    [running]    com.xrite.device.xrdd.plist (X-Rite, Incorporated - installed 2015-09-18) [Lookup]    [loaded]    org.macosforge.xquartz.privileged_startx.plist (Apple Inc. - XQuartz - installed 2014-08-11) [Lookup]User Launch Agents:ⓘ    [running]    com.bluejeans.app.detector.plist (Shell Script 69999cc8 - installed 2017-10-04) [Lookup]    [loaded]    com.citrixonline.GoToMeeting.G2MUpdate.plist (Citrix Online LLC - installed 2016-07-20) [Lookup]    [loaded]    com.dropbox.DropboxMacUpdate.agent.plist (Dropbox, Inc. - installed 2017-08-10) [Lookup]    [loaded]    com.skype.skype.shareagent.plist (Skype Communications S.a.r.l - installed 2017-10-06) [Lookup]    [loaded]    com.valvesoftware.steamclean.plist (? b38a215c f2e42815 - installed 2010-12-28) [Lookup]User Login Items:ⓘ    com.adobe.SwitchBoard.monitor.plist    MachInit - Hidden         (/etc/mach_init_per_user.d/com.adobe.SwitchBoard.monitor.plist)    Mach Init items are deprecated3rd Party Preference Panes:ⓘ    NoneTime Machine:ⓘ    Skip System Files: NO    Mobile backups: OFF    Auto backup: YES    Volumes being backed up:        Mongo: Disk size: 870.70 GB Disk used: 429.07 GB        Space: Disk size: 497.71 GB Disk used: 84.30 GB    Destinations:        Time Machine [Local]         Total size: 1.50 TB         Total number of backups: 253         Oldest backup: 7/2/13, 11:23 PM         Last backup: 10/10/17, 2:07 PM         Size of backup disk: Too small            Backup size 1.50 TB &lt; (Disk used 513.37 GB X 3)Top Processes by CPU:ⓘ         5%   WindowServer         4%   com.apple.WebKit.WebContent         4%   DashboardClient         2%   kernel_task         2%   Activity MonitorTop Processes by Memory:ⓘ    1.17 GB   kernel_task    605 MB    com.apple.WebKit.WebContent    292 MB    talagent    225 MB    mds_stores    223 MB    MailTop Processes by Network Use:ⓘ    Input     Output    Process name    3 MB      134 KB    com.apple.WebKit.Networking    1 MB      3 KB      com.apple.WebKit.Networking    12 KB     11 KB     mDNSResponder    10 KB     9 KB      apsd    11 KB     3 KB      imagentTop Processes by Energy Use:ⓘ     16.38 WindowServer      8.50 com.apple.WebKit.WebContent      7.00 Mail      5.84 xrddVirtual Memory Information:ⓘ    10.93 GB  Available RAM    7.67 GB   Free RAM    5.07 GB   Used RAM    3.26 GB   Cached files    0 B       Swap UsedSoftware installs (last 30 days):ⓘ    Adobe Flash Player:  (installed 2017-09-16)    GoPro VR Player 3.0:  (installed 2017-09-21)    Autodesk AutoCAD LT 2017 for Mac:  (installed 2017-09-22)    Cobalt v9 SP0:  (installed 2017-09-28)    EPSON Scan:  (installed 2017-09-29)    Install information may not be complete.Diagnostics Events (last 3 days for minor events):ⓘ    2017-10-10 14:22:23    Last shutdown cause: 0 - Power loss    2017-10-10 13:48:44    com.apple.WebKit.WebContent High CPU use [Open] [Details]    2017-10-10 09:45:58    LayOut.app High CPU use [Open] [Details]    2017-10-09 20:52:01    Firefox.app High CPU use [Open] [Details]Files deleted by EtreCheck:ⓘ    2017-10-05 17:10:06 - ~/Library/LaunchAgents/com.apple.MobileMeSyncClientAgent.plist - Unknown

rkaufmann87 · Answer

I don&#x27;t recommend Chrome unless you are absolutely forced to use it, the reason being is it&#x27;s a resource hog in itself.

David Sirola · Answer

I have also heard such from others, but whatever is happening under the hood, safari is burning up my GPU and Chrome isn&#x27;t...?

rkaufmann87 · Answer

Let us know what Apple finds out after you take it to your local Apple Store.

David Sirola · Answer

Many thanks RK for having a look!I shocked about the symantec AV. I&#x27;ve been on a mac since I gave up my amiga, perhaps something installed years ago ? I really don&#x27;t remember.I&#x27;ll give it a shot and report back.

David Sirola · Answer

Hi No luck. followed directions as suggested, removed symantec stuff via their removal tool, SMC/PRAM, etc and situation remains the same? Embedded web page video, about 1/3 overall screen width, GPU diode runs to 97, fans at 2550rpm, cpu usage for the page 6.9% I do not see gpu heating with youtube video.Do you know if apple&#x27; s use of METAL changed between El Capitain and Sierra pushing more load onto the GPU?I&#x27;ve seen others on the web mentioning high GPU diode temps, but unable to determine if this is normal for my iMac.Thanks.