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bluegt

macrumors 6502
Original poster
Jul 3, 2015
463
491
Hi Everyone,

I've found that when idling power consumption on the MBP 2021 can be very low. I'm curious about how this looks at load. Could people with the MBP 2021 please help to check, this just takes 3 minutes.

Steps:
1. Open Terminal, type sudo powermetrics
2. Go to https://cpux.net/cpu-stress-test-online
3. Set to 32 Threads, 100% Power, Click Start
4. Watch powermetrics for 2-3 minutes, and report on the max results
*note, keep window focus on the browser

Some data points of interest on the Base 14:

Idle Power Consumption
Methodology: Restarted, Background Apps: Windscribe (VPN), BitDefender and Google Drive, Idled 5 Minutes, Brightness at 6 Ticks. Measured at the charger.
Total Power Consumption 0.39Wh
Average Wattage: 4.7W


Powermetrics indicates CPU power consumption is: 78mW
E-Cluster: 8mW
P0-Cluster: 65mW
P1-Cluster: 6mW

So whether 8 or 10 core, if the cores are idle, power consumption is next to nil.

Load Power Consumption
Based on above steps
CPU Power: ~27300mW
Package Power: ~32600mW
 
Followed your methodology more or less. This is for Macbook Pro 14" 2021 (macOS 12.4) - M1 Pro 10-core CPU, 14-core GPU (1-level above base), 32GB RAM

Idle (min among 10 samples)

CPU Power: 57 mW
Package Power: 803 mW

E-Cluster Power: 55 mW
P0-Cluster Power: 3 mW
P1-Cluster Power: 0 mW


Load (max among 70 samples)

CPU Power: 36382 mW
Package Power: 43465 mW
 
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