And it is running a Microsoft OS, so there are Always multiple things on the cpu scheduler…
This is just another fool the benchmark - marketing trick from Intel. There 14nm and current X times refreshed core design is not capable of handling 8 cores in a low TDP package. After several revisions and flaw fixes its back at the Pentium burst era. Where ghz is needed for higher performance which always results in heat.
The Intel Core architecture has only been efficient a 4c or less and clock speeds 4.0GHz or less. Just look at the difference in power draw between the i7-4770k (84W TDP) and i7-4970k (88W TDP). At stock clocks figuring max boost for 1T, at 3.9GHz the 4770k uses 14.76W where as at 4.4GHz the 4970k uses 32.58W. To get that extra 500MHz requires a massive 120% increase in power. At 8T they use 67.09W & 88.67W respectively. Yes that is on the 22nm process, but the absolute core power draw isn't any much better on 14nm. For 1T going 4.5GHz on i7-7700k is 26.29W, a drop of 20% compared to 14nm. 8T between the 7700k & 4970k is almost equal in power draw 91.36W vs 88.67W.
There is a point where doing the work faster is a lot more efficient, where you have the best performance per Watt. Anything else either produces less work, or does it in more time, or uses more energy to do so.
Since when is heat output matter at all when it comes to performance. No one goes "oh know i see my laptop is making more heat, sucks that i'm getting more performance though because of it". lol
If your laptop generates more heat, i.e. uses more energy this means both reduced battery run time but also that the CPU will throttle, so actual performance will be reduced.
It will also mean that your laptop and power brick will need to be larger and heavier. Add a high end dGPU to that and either it or the CPU cannot run at full performance since the cooling solution needs to handle the heat of both.
Better performance / watt means that all components can run at a higher sustained speed.
I'm passing up ordering food to allow you all to bask in my wisdom here. Be grateful (or just absolutely lay into my arguments as usual...). There are other issues with a high power draw laptop - I used a DESKTOP Pentium 4 laptop. A few things were evident. It was several kilos for a start and what was due to the huge heat sinks required. This meant a lot of space was required so the thing was very thick. Then you had about 5 or 6 fans in it if I remember rightly and those mostly sucked in from the base. So you couldn't put it on your lap without cooking the laptop. Also the heat output was such that it was very unpleasant to use in summer due to the palm rest areas getting just so hot. And then we get to the fact that it gradually cooked itself. These high temperature devices eventually fry themselves due to the heating and cooling cycles eventually breaking something. Mine had several parts fail bit by bit and finally became unusable.
So yes, people can be very happy with a hot running laptop. But if you use it on your lap, you'll end up with a blistered penis.
It matters for mobile devices when the CPU hits its throttle temps and actually gives lower not much greater performance for the power consumed...also, if your laptop is on your lap, and it suddenly gets scaldingly hot.
Your example also forgets about the extra power draw for that instance. While it might not heat up instantly, you have to be able to send that massive amount of power required to do it as well. As was stated by Ian "t does mean that in order to hit 5.3 GHz, the Core i9 is by default allowed to take 135 W across two cores, or 67.5 W per core. Even at 60W per core, you're looking at 50A of current per core... in a laptop."
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duploxxx - Thursday, April 2, 2020 - link
And it is running a Microsoft OS, so there are Always multiple things on the cpu scheduler…This is just another fool the benchmark - marketing trick from Intel. There 14nm and current X times refreshed core design is not capable of handling 8 cores in a low TDP package. After several revisions and flaw fixes its back at the Pentium burst era. Where ghz is needed for higher performance which always results in heat.
schujj07 - Thursday, April 2, 2020 - link
The Intel Core architecture has only been efficient a 4c or less and clock speeds 4.0GHz or less. Just look at the difference in power draw between the i7-4770k (84W TDP) and i7-4970k (88W TDP). At stock clocks figuring max boost for 1T, at 3.9GHz the 4770k uses 14.76W where as at 4.4GHz the 4970k uses 32.58W. To get that extra 500MHz requires a massive 120% increase in power. At 8T they use 67.09W & 88.67W respectively. Yes that is on the 22nm process, but the absolute core power draw isn't any much better on 14nm. For 1T going 4.5GHz on i7-7700k is 26.29W, a drop of 20% compared to 14nm. 8T between the 7700k & 4970k is almost equal in power draw 91.36W vs 88.67W.close - Thursday, April 2, 2020 - link
There is a point where doing the work faster is a lot more efficient, where you have the best performance per Watt. Anything else either produces less work, or does it in more time, or uses more energy to do so.Nokiya Cheruhone - Saturday, April 4, 2020 - link
Read a little about the dirac distribution. This point is not reached as the actual energy consumption per calculation is an exp(freq).imaheadcase - Thursday, April 2, 2020 - link
Since when is heat output matter at all when it comes to performance. No one goes "oh know i see my laptop is making more heat, sucks that i'm getting more performance though because of it". lolIrata - Friday, April 3, 2020 - link
If your laptop generates more heat, i.e. uses more energy this means both reduced battery run time but also that the CPU will throttle, so actual performance will be reduced.It will also mean that your laptop and power brick will need to be larger and heavier. Add a high end dGPU to that and either it or the CPU cannot run at full performance since the cooling solution needs to handle the heat of both.
Better performance / watt means that all components can run at a higher sustained speed.
philehidiot - Friday, April 3, 2020 - link
I'm passing up ordering food to allow you all to bask in my wisdom here. Be grateful (or just absolutely lay into my arguments as usual...). There are other issues with a high power draw laptop - I used a DESKTOP Pentium 4 laptop. A few things were evident. It was several kilos for a start and what was due to the huge heat sinks required. This meant a lot of space was required so the thing was very thick. Then you had about 5 or 6 fans in it if I remember rightly and those mostly sucked in from the base. So you couldn't put it on your lap without cooking the laptop. Also the heat output was such that it was very unpleasant to use in summer due to the palm rest areas getting just so hot. And then we get to the fact that it gradually cooked itself. These high temperature devices eventually fry themselves due to the heating and cooling cycles eventually breaking something. Mine had several parts fail bit by bit and finally became unusable.So yes, people can be very happy with a hot running laptop. But if you use it on your lap, you'll end up with a blistered penis.
Cullinaire - Saturday, April 11, 2020 - link
You are ordering polish dogs for lunch I take it?Namisecond - Saturday, April 4, 2020 - link
It matters for mobile devices when the CPU hits its throttle temps and actually gives lower not much greater performance for the power consumed...also, if your laptop is on your lap, and it suddenly gets scaldingly hot.schujj07 - Thursday, April 2, 2020 - link
Your example also forgets about the extra power draw for that instance. While it might not heat up instantly, you have to be able to send that massive amount of power required to do it as well. As was stated by Ian "t does mean that in order to hit 5.3 GHz, the Core i9 is by default allowed to take 135 W across two cores, or 67.5 W per core. Even at 60W per core, you're looking at 50A of current per core... in a laptop."