Intel Power Gadget Help Please

getrealbro

macrumors 6502
Original poster
Sep 25, 2015
351
123
Despite copious Googling, I’m having trouble understanding some of the Intel Power Gadget v3.6.1 curves.

The Power, Temperature and Utilization graphs are pretty easy to figure out. But the Frequency graph — not so much. I guessing that these curves are…

GFX curve = freq of the Intel UHD Graphics 630
Straight Line = Max freq of the cores without TurboBoost
MAX curve = top of the blue shaded area
MIN curve = bottom of shaded area
AVG curve = blue curve inside the shaded area

BUT… what exactly do the MAX, MIN and AVG represent? IOW do the MAX, MIN and AVG curves represent the frequency of the fastest, slowest and median of the 6 cores at any given time? And if so, why do these curves quickly converge above the nominal core frequency even when the Utilization curve barely budges?

Thanks in Advance — GetRealBro
 

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Spectrum

macrumors 65816
Mar 23, 2005
1,425
772
Never quite sure
Despite copious Googling, I’m having trouble understanding some of the Intel Power Gadget v3.6.1 curves.

The Power, Temperature and Utilization graphs are pretty easy to figure out. But the Frequency graph — not so much. I guessing that these curves are…

GFX curve = freq of the Intel UHD Graphics 630
Straight Line = Max freq of the cores without TurboBoost
MAX curve = top of the blue shaded area
MIN curve = bottom of shaded area
AVG curve = blue curve inside the shaded area

BUT… what exactly do the MAX, MIN and AVG represent? IOW do the MAX, MIN and AVG curves represent the frequency of the fastest, slowest and median of the 6 cores at any given time? And if so, why do these curves quickly converge above the nominal core frequency even when the Utilization curve barely budges?

Thanks in Advance — GetRealBro
Green is the GPU.
Straight grey line is the 'guaranteed', non turbo base GPU frequency at processor TDP (e.g. 28W, 45W, 65W, 95W, etc). Your chip is a 65W CPU based on the grey line in the power chart.
REQ is the requested frequency - normally the maximum value possible depending on number of cores being loaded - and proportioanl to the CPU specs listed on ARK.
I have assumed that the MAX, MIN and AVG reperesent the maximum, minimum and average fequency observed in each sampling window (e.g. 1 second). But, yes...I'm not sure how the multiple cores (each potentially at a different frequency) come into play here.

It looks like you have either an i7 iMac or i7 mac mini, is that correct?
 

getrealbro

macrumors 6502
Original poster
Sep 25, 2015
351
123
Green is the GPU.
Straight grey line is the 'guaranteed', non turbo base GPU frequency at processor TDP (e.g. 28W, 45W, 65W, 95W, etc). Your chip is a 65W CPU based on the grey line in the power chart.
REQ is the requested frequency - normally the maximum value possible depending on number of cores being loaded - and proportioanl to the CPU specs listed on ARK.
I have assumed that the MAX, MIN and AVG reperesent the maximum, minimum and average fequency observed in each sampling window (e.g. 1 second). But, yes...I'm not sure how the multiple cores (each potentially at a different frequency) come into play here.

It looks like you have either an i7 iMac or i7 mac mini, is that correct?
Thanks for the info. "the MAX, MIN and AVG represent the maximum, minimum and average frequency observed in each sampling window" makes sense.

Yes this a "Black Friday" 2018 Mac Mini i7 w/32GB Ram (self installed).I was planning on getting an i5 but made an impulse upgrade based on the larger discount. "But look honey how much more money I saved." :)

I also added the Satechi aluminum stand (Cyber Monday 25% off) and noticed the Mini seemed to be hotter than I remembered before I added the stand. Hence the search for some way to monitor/record the temps, which lead to Intel Power Gadget and Macs Fan Control. Of course then I began wondering why the freq curves converge to above 3.2Ghz on almost any activity e.g. scrolling an Excel preadsheet. Even with your interpretation of the freq curves, it looks like all 6 cores would have to be in turbo boost at some point during that sample period.

GetRealBro
 
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Spectrum

macrumors 65816
Mar 23, 2005
1,425
772
Never quite sure
Of course then I began wondering why the freq curves converge to above 3.2Ghz on almost any activity e.g. scrolling an Excel preadsheet. Even with your interpretation of the freq curves, it looks like all 6 cores would have to be in turbo boost at some point during that sample period.

GetRealBro
Sounds like a good buy. If you want to monitor what each core is up to, use activity monitor and the CPU history chart. few processes work multiple cores at once. The cores mostly help when you are doing multiple different things at once.

so...I agree with you. These can't represent the average frequency across the 6 cores. For example, early on in the trace, you have a spike average of over 4 GHz. But the CPU utilisation is only about 15%, which is basically 2/12 cores If you include hyper threading.
- - Post merged: - -

EDIT. Also a full 6 core turbo will briefly use around 85Watts of power.