I've tried using Macs Fan Control to keep the fans at bay, but unfortunately the laptop instead of running fans starts to throttle like crazy, when I set the desired fan speed. Usually the laptop remains silent, but sometimes out of nowhere I get sudden spike in fan activity while temperatures of all component are absolutely fine (bellow 60C for CPU and GPU). There is one line which looks suspicious:īut no reference to find out the meaning and possible impact -_-ĬPU throttling to 0.3GHz at low temperatures Ever since I bought the 2020 MacBook Pro I feel like fans were running much more often than they should've. If any more log could help, please share the procedure: I am sure Apple will be happy on supporting me doing this : )īelow is the output of "sysctl machdep". I just want to find out the root cause, why it is throttling? If I can rescue these machine, I can preventing make two piece of elec-junk, proud of saving the earth. I fully understand that these machine is OLD ENOUGH. Re-install MacOS(From 10.7 to latest 10.13 with latest update/patch).The test was performed right after OS install+patching to latest update, nothing else app installed, except Intel Power Gadget and Geekbench. Much below the reference score, which is around 3000 for Geekbench 4, and 900 for Geekbanch 5. The GeekBench 4 score is around 900, GeekBench 5 score is around 165. A strange thing is, Activity Manager only show the usage, but not show the real-time frequency. when I capture this screen shot, GeekBench was running, the Activity Manager showed an almost 100% CPU usage. This should not be "dynamic speed" feature, because the frequency was LOCKED as a straight line. There are reports about issues like this with the 7390.I have 2 Macbook Pro, both manufactured in 2011 Early, 13 inch and 15 inch.īoth suffered from same issue: CPU was throttled at 0.8GHz, statically, as the below image above: Reboot and see if C state activity changes. It will run slower and hotter.Įdit - When testing, make sure nothing is plugged into a USB port and you are not using an external monitor. A laptop with all of the C states being disabled is not normal.Ĭheck your BIOS to see if you might have disabled C states. Ask him to run HWiNFO to see if C states are working for them.
#75 PERCENT CPU THROTTLED PRO 2 INSTALL#
To try to track this down, if you have a spare hard drive, I would install a fresh copy of Windows 10.įind a specific forum and try to find another user with your CPU. It is either a Windows issue or a BIOS issue. This will result in poor battery run time as well as hotter CPU temps when your computer is idle. Both C0 and C1 are working but nothing beyond that. ThrottleStop and HWiNFO both confirm that your CPU is not being allowed to use any of the low power C states that it should be using. When all of the cores have nothing to do, then the entire CPU package will go into package C2, C3, C6, C7, C8, C9 and package C10.
If it has nothing to do for an extended period of time, it will drop into lower and lower C states like C3, C6 and C7. When this core has nothing to do, it will immediately go into the C1 state. The C0 state is the state a CPU core will be in when it is actively working on something. When this happens, can you post a screenshot of ThrottleStop including the Limit Reasons window? Limit Reasons might show this type of throttling. Setting this higher does not seem to make any difference.Įdit - Your problem might be related to the voltage regulators overheating. Leaving Speed Shift MIn Max at 1 and 255 is OK. Checking that box ensures that the ThrottleStop turbo power information is being sent to the CPU. I know BradsHacks article likes to leave this box unchecked and I know this works for him but it might not work for some Intel CPUs. Put a check mark in the Turbo Boost Short Power Max box. Some of these throttling schemes cannot be overridden with ThrottleStop or any other software.Īs for your settings, why not set the long and short turbo power limits to 45W and set the turbo time limit to its default value which is 28 seconds. Some laptops force power limit throttling for whatever reason they dream up. If the temperature drops to 75☌ and it is still running at 800 MHz then that is not thermal throttling. It would be interesting to see what Limit Reasons shows after your CPU cools down a little. Overheating detected shows that it is thermal throttling.
Your AIDA screenshot shows your CPU is running at 98☌. Click to expand.When this happens, can you post a screenshot of ThrottleStop including the Limit Reasons window?
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