(To start Apple Diagnostics over the internet, hold down Option-D. you can also 'grep thermal' if you are only interested in that. Press the power button on your Mac and then immediately press and hold down the D key on the keyboard. If you already have worked on Windows-based systems. You need to open the Activity Monitor to find out the reasons. You will notice the frequency details and also some thermal info. Tips: How to Diagnose a Slow Mac on Catalina.

: SYSCALL XD 1GBPAGE EM64T LAHF LZCNT RDTSCP TSCI You can save the system diagnostics report and send it to Apple Support. 7_features: RDWRFSGS TSC_THREAD_OFFSET BMI1 AVX2 SMEP BMI2 ERMS INVPCID FPU_CSDS MDCLEAR IBRS STIBP L1DF SSBD Activity Monitor can collect information about the status of your Mac in a system diagnostics report. : FPU VME DE PSE TSC MSR PAE MCE CX8 APIC SEP MTRR PGE MCA CMOV PAT PSE36 CLFSH DS ACPI MMX FXSR SSE SSE2 SS HTT TM PBE SSE3 PCLMULQDQ DTES64 MON DSCPL VMX SMX EST TM2 SSSE3 FMA CX16 TPR PDCM SSE4.1 SSE4.2 x2APIC MOVBE POPCNT AES PCID XSAVE OSXSAVE SEGLIM64 TSCTMR AVX1.0 RDRAND F16C Or thermal / temperature details only? sysctl -a | grep thermal (but apple maybe removed the details from this to just numbers 0 or 1?) sysctl -a | grep cpu | more sudo powermetricsĪnd at the bottom you will see the following. There are 2 main ways to view your CPU stats if you don‘t want to install additional software you can view a lot of details from the terminal / command line.

Mac cpu speed diagnostics