Re:Intel Alder Lake Mobility CPU Faster Than Apple M1 Max
by dont__panic on Thursday October 28, 2021 @11:22AM
(#29027166)
Similarly, Intel often states TDPs of 25W, 45W, 65W, etc... while peaking actual power usage at nearly double those numbers during "power boost."
So unfortunately TDP has basically become a marketing term and we're back to literally measuring power usage instead. Which of course gets complicated when you consider that different machines have wildly different heat management systems.
Re:Intel Alder Lake Mobility CPU Faster Than Apple M1 Max
by ac29 on Thursday October 28, 2021 @12:31PM
(#29027946)
"TDP" as such is going away for Alder Lake. Intel is now using a much clearer base power and turbo power number. So for example, the new i5-12600K has a Base Speed of 3700MHz @ 125W and Turbo Speed of 4900MHz @ 150W (if and when thermals allow it) [0]. The old marketing would've just called this a TDP of 125W.
[0] https://www.anandtech.com/show/16959/intel-innovation-alder-...
Re:Intel Alder Lake Mobility CPU Faster Than Apple M1 Max
by camillomiller on Friday October 29, 2021 @02:55AM
(#29035959)
M1 Max operates with a peak of 50W.
With a top performance difference of let’s say 20% (unattainable by Intel), I care more about having a computer that runs at 50W tops than a water boiler at 150W.
Re:Intel Alder Lake Mobility CPU Faster Than Apple M1 Max
by SpelingBeeChamp on Friday October 29, 2021 @06:37AM
(#29037068)
It’s fascinating to me that society was willing to accept laptops that could not safely be used on a human’s lap for so long. My ‘old’ 16” MacBook Pro could probably cook an egg.
Those measures should use something like `powerstat` results standardizing other conditions - in fact, they should use benchmarking (just like the numerator of the numbers you report does, but not the denominator). This system here has a TDP of 6W, but uses 3.3W during light use, and peaks around 7.5W.
Sure, there could be a literal interpretation of "Performance/Power" which somehow could link speed and TDP (benchmarking at the same stated TDP), but (°) it would be imprecise as TDP is an estimate (so consumption should be benchmarked) and (°) it would not represent some more useful scenarios like "which system allows squeezing more working time out of a battery" (which is not represented by considering maximums - especially given technologies like big.LITTLE).